CN100414431C - A way to improve selfie mode - Google Patents

Abstract

The present invention relates to an improvement method for an autodyne mode of a digital product. More specifically a real-time focusing function is added in the autodyne mode. When the autodyne is carried out, the present invention has the steps that the position of the digital product is fixed; a view is found, and the initial pinpointed focus position is preset; the autodyne mode is entered; a real-time focusing function is activated; the real-time focusing function can look for the pinpointed focus position in real time according to the change of a shoot scene within the time of the countdown of the autodyne mode; the optimal position is found, and the real-time focusing function is closed; the autodyne is completed.

Description

A way to improve selfie mode

"Technical field"

The invention relates to the mode improvement of digital products, especially a method for improving the Selfie mode.

"Background technique"

The self-timer mode of digital products is a mode designed for users in which the digital product system automatically completes shooting within a specified time without operator operation. With this mode, users have A variety of options also increases the convenience of using digital products. When using a digital product to take a selfie, the focus is generally performed in advance. The current focusing method is: fix the position of the digital product, and the operator first adjusts the focus and fixes it, that is, the optical imaging system does not change and move, and then enters the In the self-timer mode of digital products, the optical imaging system of digital products will not move during the countdown of the self-timer mode, and will always stay at the previously fixed focal length position. After the countdown time set by the self-timer mode of digital products is over, the camera will be automatically taken Function. The self-timer flow chart of current self-timer mode is as shown in Figure 1, and its steps include: at first, fix the digital product position (S100), find the view, focus then, fix the focal length (S101), then enter self-timer mode (S102), operate The user enters the previously selected viewfinder range (S103), and finally the countdown of the time set by the self-timer mode is completed, and the self-timer ends (S104). However, due to the increase or decrease of people in the viewing range of the digital product during the self-timer, it will cause changes in the contrast of the viewfinder environment. Therefore, there are the following disadvantages in the self-timer mode of the existing digital product: (1) due to the optical imaging system It has been adjusted and fixed before entering the self-timer mode, so that the digital product cannot automatically adjust the focus according to the scene changes during the self-timer process. (2) The optical imaging system is fixed due to changes in the external environment, so it is easy to blur the photo.

The patent publication No. CN1664692A also mentions the problem of selecting the focal length of the self-timer mode. In this patent, it is pointed out that two sets of lenses are needed to display the background and characters of the self-timer in real time. The method of this patent can be realized, but because of the A set of lenses is added, and the digital signal processing component also needs to process the image twice, resulting in high design cost. Selfie tracking is mentioned in the patent with publication number CN1658655A. In this patent, in the selfie mode, there will be three matching processes. If the matching is correct, you can enter the next step. The internal program processing process is a bit complicated and time-consuming. .

It can be seen from the above that the Selfie mode of the above-mentioned digital products obviously has some inconveniences and deficiencies in actual use, and there are still things that can be improved.

"Invention"

The purpose of the present invention is to provide a method for improving the self-timer mode of digital products, which is to add a real-time focus function in the self-timer mode, so that the focus distance of digital products can be flexibly changed during the self-timer process to adapt to changes in the external environment. Thereby, the accuracy of the selfie mode is improved, and the possible blurring of the selfie picture is overcome.

Before proposing the process steps of the present invention, a core concept involved in the present invention—real-time focusing technology—is explained. The principle of this technology is to use the digital signal processing component DSP (Digital Signal Process) to obtain the contrast change rate of the environment through the photosensitive component CCD (Charge Coupled Device) in real time, and process the acquired data to calculate the best position of the current focal length. Due to the existence of this technology, the method of self-timer mode has room for improvement. The specific steps of the improved method include, as shown in Figure 2: first, the position of a digital product is fixed (S200), and then the viewfinder is pre-adjusted. An initial best focus position (S201); enter the self-timer mode (S202); then, the real-time focus function is automatically activated (S203); during the countdown time of the self-timer mode, the real-time focus function searches for the best focus position in real time according to the change of the shooting scene (S204); finally, find the best position, close the real-time focus function (S205); complete the self-timer (S206). Because the real-time focus function is activated after entering the Selfie mode, and the function is turned off before the self-timer ends, so the time required for real-time focus is less than the fixed self-timer time set by the self-timer mode. During the countdown of the self-timer mode in step S204, the real-time focus function searches for the best focal length position in real time according to the change of the shooting scene. When finding the best focal length position, the method of dividing the viewfinder area and obtaining the comparison value of each divided area is used for analysis. , the method is simple and easy to design and use.

In order to better illustrate the present invention, the present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

"Description of Drawings"

Figure 1 is a flow chart of the Selfie steps when the current digital products use the Selfie mode

Fig. 2 is a flow chart of steps of the present invention

Fig. 3 is the flow chart of steps of the embodiment of the present invention

Fig. 4 is a relationship diagram between the position of the optical imaging system and the relative value of the environment in an embodiment of the present invention

Among them, in FIG. 1 , FIG. 2 and FIG. 3 , S100~~S104, S200~~S206, and S300~~S308 are process steps.

"Detailed ways"

In this embodiment, the present invention will be described by taking the Selfie mode of a digital camera as an example.

The digital camera mentioned in this embodiment includes a digital signal processing component, an optical imaging system, a driving device and a self-timer mode, and the self-timer mode includes a real-time focusing function. The driving device can drive the optical imaging system to move to achieve a best focal length position, and the digital signal processing component can analyze and process the received signal and transmit it to the driving device to drive it. After the digital camera is turned on, the position of the digital camera is fixed (S300) as shown in the flow chart shown in FIG. The self-timer mode of the digital camera (S302), at the same time, the real-time focus function of the digital camera is automatically activated (S303), the operator enters the viewfinder range (S304), and the real-time focus function searches for the best focal length position during the countdown time of the self-timer mode (S305 ).

The real-time focusing function uses the method of dividing the viewfinder range into several areas, and obtaining the contrast value of each divided area for analysis to search for the best focal length position, as shown in Figure 4, which is the relationship between the optical imaging system and the relative value. When the value is at its peak value, it is the best focal length position that the optical imaging system can achieve. At this time, the peak value of the relative value is the average value of the peak values reached by all the relative values in the divided area. The digital signal processing component transmits the signal that the best position has been searched to the driving device, and the driving device drives the optical imaging system to stop at the best focal length position (S306). The best focal length position is found, the real-time focusing function is turned off, the countdown time set by the Selfie mode is completed, and the Selfie is completed (S307). Because the real-time focus function is activated when the digital camera enters the self-timer mode, and ends before the self-timer time set by the self-timer mode is completed, so the time required by the real-time focus function is within the self-timer time set by the self-timer mode, that is, The time for the real-time focus function to complete the search for the best focal length is less than the self-timer time set by the self-timer mode.

Compared with the currently existing Selfie mode, the Selfie mode of the digital camera proposed in this embodiment adds a real-time focusing function. The principle of this function is to use the digital signal processing component DSP (Digital Signal Process) to obtain the contrast change rate of the environment through the photosensitive component CCD (Charge Coupled Device) in real time, and process the acquired data to calculate the best position of the current focal length. Entering the self-timer mode with this function, when the operator is taking a self-portrait, the digital camera will search for the best focal length position according to the contrast value of the environment change caused by the operator entering the viewfinder range, so that the portrait is clearer in the background and the subject is highlighted, which is very easy. It avoids blurring when taking selfies.

The above is only a specific embodiment of the present invention, and cannot limit the scope of the invention. All equivalent changes and modifications made according to the claims of the present invention are within the scope of the patent of the present invention.

Claims (4)

1. a method of improving self-timer mode is characterized in that comprising in this self-timer mode a real-time focus function, and its operation steps comprises:

A, fix the position of a digital product, the scene of looking ahead is tentatively focused;

B, enter self-timer mode;

C, focus function activation in real time;

D, in the time of self-timer mode countdown, in real time focus function is sought best focus position in real time according to the variation of photographed scene;

E, find the optimum position, close real-time focus function;

F, auto heterodyne are finished.

2. a kind of method of improving self-timer mode according to claim 1, it is characterized in that digital product enters self-timer mode after, in real time focus function activates running automatically.

3. a kind of method of improving self-timer mode according to claim 1, the auto heterodyne time that it is characterized in that in the self-timer mode being fixed is greater than focus function search best focus position in real time and fix time of this position.

4. a kind of method of improving self-timer mode according to claim 1 is characterized in that in steps d, and in real time focus function adopts and divide view area, obtains the method that the contrast number of each zoning is resolved when seeking best focus position.

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