CN112822473A - Calibration test method and system for projection product - Google Patents
Calibration test method and system for projection product Download PDFInfo
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- CN112822473A CN112822473A CN202110334959.9A CN202110334959A CN112822473A CN 112822473 A CN112822473 A CN 112822473A CN 202110334959 A CN202110334959 A CN 202110334959A CN 112822473 A CN112822473 A CN 112822473A
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- 238000012795 verification Methods 0.000 claims abstract description 9
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
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Abstract
The invention discloses a calibration test method and a calibration test system for a projection product, and relates to the field of trapezoidal correction of the projection product. The method comprises the following steps: placing the tested product at a preset position of the jig, calibrating the tested product according to the calibration instruction, recording the initial coordinate of the projection rectangle, and returning the calibration result; the movement unit adjusts the angle of a tray on the jig according to a preset inclination instruction, and the projection graph of the product to be measured is adjusted and corrected according to the initial coordinate and the current coordinate of the projection graph; the tested product is calibrated and verified according to the photographing verification instruction, the calibration test of the projection product is realized, the projected trapezoidal picture can be automatically corrected into the rectangular picture by the tested product, the automatic calibration on the production line is realized, the efficiency is high, and the error is low.
Description
Technical Field
The invention relates to the field of trapezoidal correction of projection products, in particular to a calibration test method and a calibration test system of a projection product.
Background
The existing projection products comprise a trapezoidal correction function, and the function is calibrated on a production line in a traditional manual mode, so that the efficiency is low, and errors are easy to occur.
Disclosure of Invention
The invention aims to solve the technical problem of providing a calibration test method and a calibration test system for a projection product aiming at the defects of the prior art.
The technical scheme for solving the technical problems is as follows:
a method of calibration testing of a projection product, comprising:
placing the tested product at a preset position of the jig;
the tested product receives a calibration instruction sent by test software, the calibration process of the tested product is carried out, the initial coordinate of the projection rectangle of the calibrated tested product is recorded, and the instruction after calibration is returned to the test software;
the motion unit controls a tray on the jig to adjust a fixed angle in a preset inclination instruction according to the preset inclination instruction sent by the test software;
the tested product receives a correction instruction sent by the test software, adjusts the projection graph of the tested product according to the current coordinate acquired by photographing and the initial coordinate, and finishes correction after adjustment; the current coordinate represents a projection graph coordinate of the product to be detected after being adjusted by the fixed angle;
and the tested product receives the photographing verification instruction sent by the test software, automatically judges whether the projection graph of the tested product is rectangular according to the image information acquired by photographing, and continuously returns to correct if the projection graph of the tested product is not rectangular until the projection graph is rectangular, the motion unit controls the tray on the jig to reset, and the calibration test of the tested product is completed.
The invention has the beneficial effects that: the project product calibration test is realized through the process of calibrating, calibrating and testing and verifying the tested product on the production line, the tested product can automatically correct the projected trapezoidal picture into a rectangular picture, the automatic calibration on the production line is realized, the efficiency is high, and the error is low.
Further, the automatically determining whether the projection graph of the detected product is a rectangle specifically includes:
carrying out image processing on the acquired image information, and converting the RGB image information into gray value image information;
and performing rectangle detection on the gray value image information, and judging whether the projection graph is rectangular or not.
The beneficial effect of adopting the further scheme is that: according to the scheme, the image information is subjected to gray level processing and then rectangular detection to judge whether the projection graph is rectangular, whether correction is successful or not is automatically judged, and the projection graph can be returned to continue correction if the correction is not successful, so that the defective products which are not successfully corrected in the production line correction are prevented from being produced.
Further, the rectangle detection includes: a rectangular vertex coordinate decision or an OpenCV third party interface decision.
The beneficial effect of adopting the further scheme is that: according to the scheme, rectangular detection is carried out through rectangular vertex coordinate judgment or OpenCV, judgment of projection graphs is achieved under various different conditions, and the production line can adapt to various calibration test environments.
Further, the motion unit includes: a microcontroller and a drive mechanism;
the moving unit controls the tray on the jig to adjust the fixed angle in the preset inclination instruction according to the preset inclination instruction sent by the test software, and the fixed angle specifically comprises the following steps:
the microcontroller receives a preset inclination instruction sent by the test software and processes the preset inclination instruction to obtain angle adjustment information;
and the driving mechanism adjusts the tray on the jig to a fixed angle according to the angle adjustment information.
The beneficial effect of adopting the further scheme is that: according to the scheme, the moving unit formed by the microcontroller and the driving mechanism controls the tray to rotate, so that the efficiency is improved.
Further, the preset tilting instruction specifically includes: a left tilt instruction and a right tilt instruction.
Another technical solution of the present invention for solving the above technical problems is as follows:
a calibration test system for a projection product, comprising: the system comprises a preset module, a tested product, a motion unit and a terminal with built-in test software;
the preset module is used for placing a tested product at a preset position of the jig;
the tested product is used for receiving a calibration instruction sent by a terminal with built-in test software, carrying out the calibration process of the tested product, recording the initial coordinates of the projection rectangle of the calibrated tested product, and returning the calibrated instruction to the terminal with built-in test software;
the motion unit is used for controlling a tray on the jig to adjust a fixed angle in a preset inclination instruction according to the preset inclination instruction sent by the terminal with the built-in test software;
the tested product is used for receiving a correction instruction sent by the terminal with built-in test software, adjusting the projection graph of the tested product according to the current coordinate acquired by photographing and the initial coordinate, and completing correction after adjustment; the current coordinate represents a projection graph coordinate of the product to be detected after being adjusted by the fixed angle;
the tested product is also used for receiving a photographing verification instruction sent by the terminal with built-in test software, automatically judging whether the projection graph of the tested product is rectangular according to the image information acquired by photographing, if not, continuing to return to correct, if so, the motion unit controls the tray on the jig to reset, and the calibration test of the tested product is completed.
The invention has the beneficial effects that: the project product calibration test is realized through the process of calibrating, calibrating and testing and verifying the tested product on the production line, the tested product can automatically correct the projected trapezoidal picture into a rectangular picture, the automatic calibration on the production line is realized, the efficiency is high, and the error is low.
Further, the tested product is specifically used for carrying out image processing on the acquired image information and converting the RGB image information into gray value image information;
and performing rectangle detection on the gray value image information, and judging whether the projection graph is rectangular or not.
The beneficial effect of adopting the further scheme is that: the beneficial effect of adopting the further scheme is that: according to the scheme, the image information is subjected to gray level processing and then rectangular detection to judge whether the projection graph is rectangular, whether correction is successful or not is automatically judged, and the projection graph can be returned to continue correction if the correction is not successful, so that the defective products which are not successfully corrected in the production line correction are prevented from being produced.
Further, the rectangle detection includes: a rectangular vertex coordinate decision or an OpenCV third party interface decision.
The beneficial effect of adopting the further scheme is that: according to the scheme, rectangular detection is carried out through rectangular vertex coordinate judgment or OpenCV, judgment of projection graphs is achieved under various different conditions, and the production line can adapt to various calibration test environments.
Further, the motion unit includes: a microcontroller and a drive mechanism;
the microcontroller is used for receiving a preset inclination instruction sent by the test software and processing the preset inclination instruction to obtain angle adjustment information;
and the driving mechanism is used for adjusting the tray on the jig to a fixed angle according to the angle adjustment information.
The beneficial effect of adopting the further scheme is that: according to the scheme, the moving unit formed by the microcontroller and the driving mechanism is used for controlling the tray to rotate so as to improve the efficiency.
Further, the preset tilting instruction specifically includes: a left tilt instruction and a right tilt instruction.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic flowchart of a calibration testing method for a projection product according to an embodiment of the present invention;
FIG. 2 is a block diagram of a calibration test system for a projection product according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a calibration test system according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of an installation structure of a verification test scheme according to another embodiment of the present invention
FIG. 5 is a schematic flow chart illustrating automatic determination of a projected pattern of a product under test according to another embodiment of the present invention
Fig. 6 is a flowchart illustrating a rectangular fixed point coordinate determination method according to another embodiment of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
As shown in fig. 1, a calibration testing method for a projection product according to an embodiment of the present invention includes:
placing the tested product at a preset position of the jig;
in one embodiment, the preset position may include a central position of a tray of the jig, or a position where the projected pattern is ensured to be rectangular after the tested product is placed on the tray, and a groove may be provided in the position to help position the tested product.
The method comprises the steps that a tested product receives a calibration instruction sent by test software, the calibration process of the tested product is carried out, the initial coordinates of a projection rectangle of the calibrated tested product are recorded, and the calibrated instruction is returned to the test software; the calibration instructions may include calibrating the xy coordinates of the rectangular frame.
In one embodiment, the calibration process for the product under test may represent an internally executed process when the product under test is calibrated.
The moving unit controls a tray on the jig to adjust a fixed angle in a preset inclination instruction according to the preset inclination instruction sent by the test software;
the tested product receives a correction instruction sent by the test software, adjusts the projection graph of the tested product according to the current coordinate acquired by photographing and the initial coordinate, and finishes correction after adjustment; the current coordinate represents the projection graph coordinate of the measured product after fixed angle adjustment;
and the tested product receives the photographing verification instruction sent by the test software, automatically judges whether the projection graph of the tested product is rectangular according to the image information acquired by photographing, and continuously returns to correct if the projection graph of the tested product is not rectangular until the projection graph is rectangular, the motion unit controls the tray on the jig to reset, and the calibration test of the tested product is completed.
In one embodiment, as shown in fig. 3, the computer indicates that the test software installed at the computer end communicates with the control circuit, i.e., the moving unit and the tested product, respectively, the control circuit communicates with the computer and controls the fixture to rotate, and the tested product projects the projection onto the projection screen, and the specific working process may include:
1, placing a tested product on a tray of a jig;
2, the computer end test software sends a calibration instruction to the tested product, waits for the completion of calibration and stores an initial coordinate; the calibration needs to calibrate the xy coordinates of a rectangular picture;
3, the computer end test software sends a left inclination instruction to the control circuit to control the tray on the jig to incline to the left by a fixed angle;
4, sending a trapezoidal correction instruction to a tested product by the computer-side test software; after the tested product is placed in an inclined mode, the projected picture is trapezoidal, so that a trapezoidal correction instruction needs to be sent, and the projected picture is automatically adjusted into a rectangle;
5, the computer end test software sends a photographing instruction to the tested product and finishes automatically judging whether the picture is square or not; the shooting process of the process is to complete shooting and acquisition by a camera which is arranged in a tested product; can also be completed by an external camera; the automatic judgment process is that the interior of the tested product is judged according to the collected image information, and the judgment result is returned to the test software;
6, repeating the steps 3-5 to finish the test verification of the right inclination;
7, the computer end test software sends a reset instruction to the control circuit to control the tray on the jig to reset so as to prepare for the next test. The computer-side test software can be test software which sends corresponding control instructions to the control circuit and the tested product in a serial port communication mode or a usb mode, is not specifically limited by the type of the test software, and can meet the requirements; wherein the control instructions may include: calibration instructions, left tilt instructions, keystone correction instructions, photographing instructions, reset instructions, and the like, as required during the calibration test. The control circuit can be a programmable relay or a PLC or a single chip microcomputer circuit, is combined with a control circuit of a rotary cylinder or a motor structure, and is used for controlling the jig to rotate.
As shown in fig. 4, the computer and the control circuit are all disposed below or beside the assembly line for the structural relationship of the object to be measured, the fixture, the tray, the assembly line and the projection screen.
The invention has the beneficial effects that: the project product calibration test is realized through the process of calibrating, calibrating and testing and verifying the tested product on the production line, the tested product can automatically correct the projected trapezoidal picture into a rectangular picture, the automatic calibration on the production line is realized, the efficiency is high, and the error is low.
Preferably, in any of the above embodiments, automatically determining whether the projection pattern of the detected product is a rectangle specifically includes:
carrying out image processing on the acquired image information, and converting the RGB image information into gray value image information;
and carrying out rectangle detection on the gray value image information, and judging whether the projection graph is a rectangle or not.
In one embodiment, as shown in fig. 5, automatically determining the projection pattern of the tested product may include: outputting a specific detection picture by the tested product, for example, a rectangle as shown in fig. 5, capturing the picture by a camera inside the tested product, processing the captured picture information, detecting the rectangle, judging whether the picture is the rectangle or not, if the picture is the rectangle, indicating that the picture calibration is successful and the calibration data is valid, judging to end, if not, if the calibration data is abnormal, re-calibrating, and then ending. Wherein the image processing may be converting RGB information into gray scale values, and a formula may be used: 0.299R + 0.587G + 0.114B. The manner of rectangle detection may include: rectangular fixed point coordinate decision or OpenCV third party interface decision.
In one embodiment, as shown in FIG. 6, the rectangular fixed point coordinate determination may include: calculating four fixed point coordinates of the white rectangle according to the gray value difference of the pixel points: p1, P2, P3 and P4; taking the P2 lookup as an example: 1, starting from P0(0.5W, 0.5H), firstly searching in the positive direction of the X axis, and when the gray value of a pixel is less than 200, indicating that the right side boundary of a white rectangle is reached, and recording the coordinate at the moment as P2. X; where, the P0 coordinate x is 0.5W, which refers to half the width of an image pixel; y is 0.5H, which means half the height of the image pixel, one picture 1920 × 1080 is taken as an example, and the coordinate of P0 is (960,540);
2, searching a boundary on the upper side of the white rectangle when the pixel gray value is less than 200 from (P2.x, 0.5H) along the negative direction of the Y axis, and recording the coordinate at the moment as P2. Y; other fixed points can be positioned to the (x, y) coordinates in the same way, and whether the coordinates of each fixed point meet the requirements of the rectangular fixed point or not is judged, and the coordinates are qualified if the coordinates meet the requirements. Wherein P2.x refers to the x coordinate of the P2 fixed point, P2.y refers to the y coordinate of the P2 fixed point, and the like. Judging whether the vertex coordinates are qualified or not and simultaneously meeting the following conditions: 1.| P3.x-P1.x | < delta; 2.| P4.x-P2.x | < delta; l P2.y-P1.y l is less than delta; 4.| P4.y-P3y | < delta.
The value of the gray-level value less than 200 in the flowchart is set according to the environment, and may be other values. Where delta, this value, can be determined based on accuracy requirements, corresponds to vertical and horizontal deviations.
Taking | p3.x-p1.x | < delta as an example, the delta value is determined as follows:
1 it judges whether the angle P1 and the angle P3 are consistent in the vertical direction
2 where delta is used to evaluate the accuracy of this consistency;
3 two test pictures need to be found before determining the delta value:
a standard rectangular test chart
A non-rectangular test chart with a specific angle, wherein the specific angle can be defined according to the subjective condition of the product, and an angle of 93 degrees is taken as an example;
4 then set delta to a larger value (100px) to begin performing rectangle detection;
5, because the delta value is larger, the two pictures can pass the rectangular detection at the beginning;
6, gradually tightening the delta values until a rectangle and a non-rectangle can be distinguished;
according to the scheme, the image information is subjected to gray level processing and then rectangular detection to judge whether the projection graph is rectangular, whether correction is successful or not is automatically judged, and the projection graph can be returned to continue correction if the correction is not successful, so that the defective products which are not successfully corrected in the production line correction are prevented from being produced.
Preferably, in any of the above embodiments, the rectangle detection comprises: a rectangular vertex coordinate decision or an OpenCV third party interface decision.
According to the scheme, rectangular detection is carried out through rectangular vertex coordinate judgment or OpenCV, judgment of projection graphs is achieved under various different conditions, and the production line can adapt to various calibration test environments.
Preferably, in any of the above embodiments, the movement unit comprises: a microcontroller and a drive mechanism;
the moving unit controls the tray on the jig to adjust the fixed angle in the preset inclination instruction according to the preset inclination instruction sent by the test software, and the fixed angle specifically comprises the following steps:
the microcontroller receives a preset inclination instruction sent by the test software and processes the preset inclination instruction to obtain angle adjustment information;
and the driving mechanism adjusts the tray on the jig to a fixed angle according to the angle adjustment information.
According to the scheme, the moving unit formed by the microcontroller and the driving mechanism controls the tray to rotate, so that the efficiency is improved.
Preferably, in any of the above embodiments, the preset tilting instruction specifically includes: a left tilt instruction and a right tilt instruction.
In one embodiment, as shown in fig. 2, a calibration test system for a projection product includes: the system comprises a preset module 11, a tested product 12, a motion unit 13 and a terminal 14 with built-in test software;
the preset module 11 is used for placing a tested product at a preset position of the jig;
the tested product 12 is used for receiving a calibration instruction sent by the terminal 14 with built-in test software, performing a calibration process of the tested product, recording initial coordinates of a projection rectangle of the calibrated tested product, and returning the instruction after calibration to the terminal 14 with built-in test software;
the moving unit 13 is used for controlling a tray on the jig to adjust a fixed angle in a preset inclination instruction according to the preset inclination instruction sent by the terminal 14 with built-in test software;
the tested product 12 is used for receiving a correction instruction sent by the terminal 14 with built-in test software, adjusting the projection graph of the tested product according to the current coordinate acquired by photographing and combining the initial coordinate, and finishing correction after adjustment; the current coordinate represents the projection graph coordinate of the measured product after fixed angle adjustment;
the tested product 12 is also used for receiving a photographing verification instruction sent by the terminal 14 with built-in test software, automatically judging whether the projection graph of the tested product is rectangular according to the image information acquired by photographing, and continuously returning to correct if the projection graph is not rectangular until the projection graph is rectangular, wherein the motion unit controls the tray on the jig to reset, and the calibration test of the tested product is completed.
The project product calibration test is realized through the process of calibrating, calibrating and testing and verifying the tested product on the production line, the tested product can automatically correct the projected trapezoidal picture into a rectangular picture, the automatic calibration on the production line is realized, the efficiency is high, and the error is low.
Preferably, in any of the above embodiments, the product 12 to be tested is specifically configured to perform image processing on the acquired image information, and convert the RGB image information into gray-value image information;
and carrying out rectangle detection on the gray value image information, and judging whether the projection graph is a rectangle or not.
According to the scheme, the image information is subjected to gray level processing and then rectangular detection to judge whether the projection graph is rectangular, whether correction is successful or not is automatically judged, and the projection graph can be returned to continue correction if the correction is not successful, so that the defective products which are not successfully corrected in the production line correction are prevented from being produced.
Preferably, in any of the above embodiments, the rectangle detection comprises: a rectangular vertex coordinate decision or an OpenCV third party interface decision.
According to the scheme, rectangular detection is carried out through rectangular vertex coordinate judgment or OpenCV, judgment of projection graphs is achieved under various different conditions, and the production line can adapt to various calibration test environments.
Preferably, in any of the above embodiments, the moving unit 13 includes: a microcontroller and a drive mechanism;
the microcontroller is used for receiving a preset inclination instruction sent by the test software and processing the preset inclination instruction to obtain angle adjustment information;
and the driving mechanism is used for adjusting the tray on the jig to a fixed angle according to the angle adjustment information.
According to the scheme, the moving unit formed by the microcontroller and the driving mechanism is used for controlling the tray to rotate so as to improve the efficiency.
Preferably, in any of the above embodiments, the preset tilting instruction specifically includes: a left tilt instruction and a right tilt instruction.
It is understood that some or all of the alternative embodiments described above may be included in some embodiments.
It should be noted that the above embodiments are product embodiments corresponding to the previous method embodiments, and for the description of each optional implementation in the product embodiments, reference may be made to corresponding descriptions in the above method embodiments, and details are not described here again.
The reader should understand that in the description of this specification, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for calibrating and testing a projection product, comprising:
placing the tested product at a preset position of the jig;
the tested product receives a calibration instruction sent by test software, the calibration process of the tested product is carried out, the initial coordinate of the projection rectangle of the calibrated tested product is recorded, and the instruction after calibration is returned to the test software;
the motion unit controls a tray on the jig to adjust a fixed angle in a preset inclination instruction according to the preset inclination instruction sent by the test software;
the tested product receives a correction instruction sent by the test software, adjusts the projection graph of the tested product according to the current coordinate acquired by photographing and the initial coordinate, and finishes correction after adjustment; the current coordinate represents a projection graph coordinate of the product to be detected after being adjusted by the fixed angle;
and the tested product receives the photographing verification instruction sent by the test software, automatically judges whether the projection graph of the tested product is rectangular according to the image information acquired by photographing, and continuously returns to correct if the projection graph of the tested product is not rectangular until the projection graph is rectangular, the motion unit controls the tray on the jig to reset, and the calibration test of the tested product is completed.
2. The method as claimed in claim 1, wherein the automatically determining whether the projected pattern of the projection product is rectangular specifically comprises:
carrying out image processing on the acquired image information, and converting the RGB image information into gray value image information;
and performing rectangle detection on the gray value image information, and judging whether the projection graph is rectangular or not.
3. The method for calibration testing of a projection product according to claim 1 or 2, wherein said rectangular detection comprises: a rectangular vertex coordinate decision or an OpenCV third party interface decision.
4. The method of claim 1, wherein the motion unit comprises: a microcontroller and a drive mechanism;
the moving unit controls the tray on the jig to adjust the fixed angle in the preset inclination instruction according to the preset inclination instruction sent by the test software, and the fixed angle specifically comprises the following steps:
the microcontroller receives a preset inclination instruction sent by the test software and processes the preset inclination instruction to obtain angle adjustment information;
and the driving mechanism adjusts the tray on the jig to a fixed angle according to the angle adjustment information.
5. The method for calibrating and testing a projection product according to claim 1 or 4, wherein the preset tilt command specifically comprises: a left tilt instruction and a right tilt instruction.
6. A calibration test system for a projection product, comprising: the system comprises a preset module, a tested product, a motion unit and a terminal with built-in test software;
the preset module is used for placing a tested product at a preset position of the jig;
the tested product is used for receiving a calibration instruction sent by the test software, carrying out the calibration process of the tested product, recording the initial coordinates of the projection rectangle of the calibrated tested product, and returning the calibrated instruction to the test software;
the motion unit is used for controlling a tray on the jig to adjust a fixed angle in a preset inclination instruction according to the preset inclination instruction sent by the test software;
the tested product is used for receiving the correction instruction sent by the test software, adjusting the projection graph of the tested product according to the current coordinate acquired by photographing and the initial coordinate, and completing correction after adjustment; the current coordinate represents a projection graph coordinate of the product to be detected after being adjusted by the fixed angle;
the tested product is also used for receiving the photographing verification instruction sent by the test software, automatically judging whether the projection graph of the tested product is rectangular according to the image information acquired by photographing, and continuously returning to the correction if the projection graph of the tested product is not rectangular until the projection graph is rectangular, the motion unit controls the tray on the jig to reset, and the calibration test of the tested product is completed.
7. The calibration test system of a projection product according to claim 6, wherein the product under test is specifically configured to perform image processing on the collected image information, and convert the RGB image information into grayscale image information;
and performing rectangle detection on the gray value image information, and judging whether the projection graph is rectangular or not.
8. The system for calibration testing of projection products according to claim 6 or 7, wherein said rectangular detection comprises: a rectangular vertex coordinate decision or an OpenCV third party interface decision.
9. The calibration test system for projection products of claim 6, wherein said motion unit comprises: a microcontroller and a drive mechanism;
the microcontroller is used for receiving a preset inclination instruction sent by the test software and processing the preset inclination instruction to obtain angle adjustment information;
and the driving mechanism is used for adjusting the tray on the jig to a fixed angle according to the angle adjustment information.
10. The system for calibration testing of projection products according to claim 6 or 9, wherein the preset tilt command specifically comprises: a left tilt instruction and a right tilt instruction.
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| EP1434434A1 (en) * | 2002-10-31 | 2004-06-30 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Self calibration of a projection system using multiple projectors |
| US20050001993A1 (en) * | 2003-07-04 | 2005-01-06 | A03115 / Reference Of Sundial: Us1156Pa | Projecting device with a keystone correction function |
| CN101726978A (en) * | 2008-10-29 | 2010-06-09 | 精工爱普生株式会社 | Projector and projector control method |
| CN107911680A (en) * | 2017-12-12 | 2018-04-13 | 成都市极米科技有限公司 | Projector equipment bearing calibration, device and projector equipment |
| CN110873638A (en) * | 2018-09-03 | 2020-03-10 | 深圳奥比中光科技有限公司 | A kind of optical module automatic detection equipment |
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2021
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| EP1434434A1 (en) * | 2002-10-31 | 2004-06-30 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Self calibration of a projection system using multiple projectors |
| US20050001993A1 (en) * | 2003-07-04 | 2005-01-06 | A03115 / Reference Of Sundial: Us1156Pa | Projecting device with a keystone correction function |
| CN101726978A (en) * | 2008-10-29 | 2010-06-09 | 精工爱普生株式会社 | Projector and projector control method |
| CN107911680A (en) * | 2017-12-12 | 2018-04-13 | 成都市极米科技有限公司 | Projector equipment bearing calibration, device and projector equipment |
| CN110873638A (en) * | 2018-09-03 | 2020-03-10 | 深圳奥比中光科技有限公司 | A kind of optical module automatic detection equipment |
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