CN103108201A - Stereoscopic image display device and dynamic depth image generation method - Google Patents
Stereoscopic image display device and dynamic depth image generation method Download PDFInfo
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Abstract
The invention provides a stereoscopic image display device and a dynamic depth image generation method, wherein the method comprises the following steps: receiving at least one input image; judging whether a current image in the input images is a static image; and when the current image is a static image, generating a depth image corresponding to the current image, and applying a plurality of image setting files to the depth image to generate a plurality of dynamic depth images. The invention can further process the depth information and adjust the content of the depth image by applying different image setting files, and can achieve better visual perception when the image is paused, namely, the invention can improve the visual effect by analyzing the depth image.
Description
Technical field
The present invention relates to image and process, relate in particular to utilize depth image analysis to promote the system and method for visual effect.
Background technology
Along with the development of three-dimensional display, the processing of stereo-picture is also more and more important.Generally speaking, obtaining of stereo-picture can by several modes, for example utilize the degree of depth video camera that can obtain depth information to take, taken or processed to obtain stereo-picture by two dimensional image through suitable image by two video cameras of simulating human binocular vision.As shown in Figure 1A, the processing procedure that is converted to stereo-picture by two dimensional image can roughly be divided into several steps: image dwindles, rim detection (edge detection), line are drawn tracking (line tracing), the degree of depth is assigned (depth assignment), depth image amplification and smoothing, lateral shift (lateral shifting), after depth image is set up, can be combined to produce stereo-picture (stereoscopic image) with two dimensional image originally.Conventional two-dimensional image is converted to the algorithm of stereo-picture also can be by setting up the modes such as spatial model, rim detection, calculating end point, by depth image is set up in the analysis of one or more image.
As shown in Figure 1B, the visual depth perception factor can be divided into physiologic factor and psychological factor.Generally speaking, two dimensional image is converted to the depth map of stereo-picture often for the computing of several psychological factors with the method for performing calculations.For instance, tend on psychological factor to think that the depth of field of object that yellow object, amount of movement are large or large object is the most shallow, can think also on psychological factor that conversely speaking, the depth of field of object that blue object, amount of movement are little or wisp is the darkest, and material approaches, and can be considered as the depth of field identical.
Further, depth of view information is the key in stereo display technique, but the conventional stereo Display Technique often only focuses on the producing method that how to produce the correct depth of field, but aquatic foods utilize depth of view information with further processing stereo-picture less.
Summary of the invention
In order to overcome the defective of prior art, the invention provides a kind of dynamic depth image producing method, can further process depth of view information, by applying mechanically different image setting files, the content of adjustable depth image when image suspends, can reach better visual experience.The method comprises: receive at least one input picture; Judge whether the present image of one in input picture is a still image; And when present image be still image, produce the corresponding depth image of present image, and depth image applied mechanically a plurality of image setting files to produce many dynamic depth images.
The present invention also provides a kind of stereoscopic display device, this device comprises: a depth analysis device, in order to receive at least one input picture, judge whether the present image of one in input picture is a still image, wherein working as present image is still image, produces the corresponding depth image of present image; And a time degree of depth generator, in order to depth image is applied mechanically a plurality of image setting files to produce many dynamic depth images.
The present invention is by applying mechanically different image setting files, can further process and adjust the content of depth image to depth of view information, when image suspends, can reach better visual experience, that is to say, the present invention can utilize visual effect is promoted in the analysis of depth image.
Description of drawings
Figure 1A illustrates the flow chart that two dimensional image is converted to traditional algorithm of stereo-picture;
Figure 1B is the schematic diagram that the visual depth perception factor is shown;
Fig. 2 illustrates the block diagram that a two dimensional image is converted to the conventional stereo image display device of stereo-picture;
Fig. 3 illustrates according to the block diagram of perspective view of an embodiment of the present invention as display unit;
Fig. 4 is the block diagram that illustrates according to the stereoscopic display device of another embodiment of the present invention;
Fig. 5 is the flow chart that illustrates according to the dynamic depth image producing method of one embodiment of the invention;
Fig. 6 is the schematic diagram that illustrates according to the dynamic depth image of one embodiment of the invention;
Fig. 7 is the chart that illustrates according to the image setting file of one embodiment of the invention.
Wherein, description of reference numerals is as follows:
200,300,400～stereoscopic display device;
210,310,410～depth analysis device;
320,420～stereo-picture renderer;
330,430～degree of depth time generator;
610,630,640～dynamic depth image;
620～original depth-map picture;
650～screen plane;
700～chart.
Embodiment
Fig. 2 illustrates the block diagram that a two dimensional image is converted to the conventional stereo image display device 200 of stereo-picture.Conventional stereo image display device 200 comprises a depth analysis device 210 and a stereo-picture renderer 220, wherein depth analysis device 210 receives two dimensional image, and turn the algorithm of solid with the depth image of generation two dimensional image and correspondence thereof by the two dimension of aforementioned prior art, then by stereo-picture renderer 220 output stereo-pictures.Therefore, when playing traditional two-dimentional film, via conventional stereo image display device 200, can constantly export two dimensional image and corresponding depth image thereof, and so as to producing stereo-picture.A depth image often available grey-scale range (for example 0～255) represents the different degree of depth, GTG value 255 the most close camera lenses of expression for example, and GTG value 0 represents away from camera lens.When the content that is in static or two-dimentional film when two-dimentional film is kept fixedly, only have a fixing three-dimensional depth figure and produce, therefore in above-mentioned situation, spectators only can watch comparatively dull image on traditional stereoscopic image devices.
Fig. 3 illustrates according to the block diagram of perspective view of an embodiment of the present invention as display unit 300.In this embodiment, stereoscopic display device 300 comprises a depth analysis device 310 and a stereo-picture renderer 320.Depth analysis device 310 also comprises a degree of depth time calculator 330, depth analysis device 310 receives two dimensional image and produces two dimensional image and corresponding depth image, degree of depth time calculator 330 is while joining day information in the depth information that depth analysis device 310 calculates, the depth image that respectively different time is produced is again applied mechanically different image setting files (profile), to produce the dynamic depth image.The two dimensional image that 320 reception depth analysis devices 310 of stereo-picture renderer produce and dynamic depth image are to present stereo-picture.Therefore, if the two dimensional image of input stereoscopic display device 300 keeps static for fixing or its content, stereoscopic display device 300 can allow the stereo-picture of exporting can present in time different change in depth, the visual experience when viewing and admiring so as to lifting.
Fig. 4 is the block diagram that illustrates according to the stereoscopic display device 400 of another embodiment of the present invention.In this embodiment, stereoscopic display device 400 comprises a depth analysis device 410, a stereo-picture renderer 420 and a degree of depth time calculator 430.Should be noted, degree of depth time calculator 430 in this embodiment is independent of outside depth analysis device 410, depth analysis device 410 receives two dimensional image and produces two dimensional image and corresponding depth image, and degree of depth time calculator 430 receives the depth image that is produced by depth analysis device 410, and the depth image that different time produces is applied mechanically different image setting files, to produce the dynamic depth image.The dynamic depth image that the two dimensional image that 420 reception depth analysis devices 410 of stereo-picture renderer produce and degree of depth time calculator 430 produce is to present stereo-picture.Therefore, if the two dimensional image of input stereoscopic display device 300 keeps static for fixing or its content, stereoscopic display device 300 can allow the stereo-picture of exporting can present in time different change in depth, the visual experience when viewing and admiring so as to lifting.
In one embodiment, stereoscopic display device 300 and 400 can be applicable to display or PC, and this type of can be converted to two dimensional image solid or detect on the device of the stereoscopic image content depth of field, and stereoscopic display device 300 and 400 can be realized with specific hardware or logical circuit, or carry out running with the form of procedure code on processor, but the invention is not restricted to this.
It is worth mentioning that, in another embodiment, depth analysis device 310 and 410 all also comprises a frame buffer (not shown), depth analysis device 310 and 410 can be stored in present input picture and corresponding depth image thereof in frame buffer, then needs to judge first by depth analysis device 310 and 410 whether input picture is still image before degree of depth time generator 330 and 430 is applied mechanically the image setting file.after depth analysis device 310 and 410 judges that input pictures are static state, the present invention can provide dual mode that depth image is applied mechanically to different image setting files, first kind of way is after the judgement input picture is static state, directly take the depth image of present input picture, and it is applied mechanically the image setting file, and present input picture and depth image thereof are sent to the stereo-picture renderer, following present input picture and depth image thereof can be stored in frame buffer, so that degree of depth time generator 330 and 430 reads depth image, and along with the time is applied mechanically different image setting files.If the present image in continuous input picture is judged as static state, last image of ordinary representation is also still image, therefore the second way is to take last input picture and the corresponding depth image that is stored in frame buffer, then depth image is applied mechanically the image setting file.
In the aforementioned embodiment, the chart 700 of image setting file as shown in Figure 7, wherein the content of each image setting file can be adjusted in advance and set, parameter (for example brightness, Gamma value) and predetermined time interval, predetermined image number or repetitive cycling that depth image is adjusted all can set up on their own, and image parameter is such as being the uses of all can arranging in pairs or groups such as contrast, brightness, Gamma, sharpness or reduction noise, in order to reach different visual effects.
Fig. 5 is the flow chart that illustrates according to the dynamic depth image producing method of one embodiment of the invention.please refer to Fig. 4 and Fig. 5, at step S500, depth analysis device 410 receives input picture, depth analysis device 410 need first determine the form of the present image that receives, for instance, the image of input can be pure two dimensional image or stereo-picture (two dimensional image adds corresponding depth image), depth analysis device 410 also can be set as three-dimensional pattern or two-dimensional model, under three-dimensional pattern, if depth analysis device 410 receives pure two dimensional image, can turn the algorithm of solid to produce the corresponding depth image of two dimensional image through suitable two dimension, if depth analysis device 410 receives stereo-picture (two dimensional image adds corresponding depth image), export equally two dimensional image and corresponding depth image.Hold, under three-dimensional pattern, no matter depth analysis device 410 receives pure two dimensional image or stereo-picture (two dimensional image adds corresponding depth image), can judge all whether input picture is static (step S510), if static, export two dimensional image and corresponding depth image, and execution in step S520.If the non-static state of input picture is got back to step S500 and is continued to receive input picture.At step S520,430 of degree of depth time generators are by the depth image that reads depth analysis device 410 in frame buffer and produce.At step S530,430 pairs of depth images that read of degree of depth time generator are applied mechanically different image setting files at different time, to produce the dynamic depth image.At step S540, the dynamic depth image that stereo-picture renderer 420 produces according to the two dimensional image that is produced by depth analysis device 410 and degree of depth time generator 430 is with output stereo-picture (for example left-eye image and eye image).
In another embodiment, the present invention judges whether input picture is the static various ways that has, and for example the rectangular figure (histogram) of the GTG value of depth analysis device 410 calculating input images, if rectangular figure is unchanged, can judge that input picture is still image; Or all renewals of all pixels in input picture, can judge that input picture is still image; Depth analysis device 410 receives an image halt signal to learn the state (for example the user uses a teleswitch and presses time-out) as stopping playing image (pause) at present by the image playing device (not shown), can judge that input picture is still image; Or the display end suspends input picture, and depth analysis device 410 receives an image halt signal by the display (not shown), judges that input picture is still image, but the invention is not restricted to this.
Fig. 6 is the schematic diagram that illustrates according to the dynamic depth image of one embodiment of the invention.In another embodiment, please refer to Fig. 4 and Fig. 6, Fig. 6 is right-hand is depth image and dynamic depth image, and Fig. 6 left is depth image or the stereo-picture of dynamic depth image after two dimensional image is combined, and spectators experience the schematic diagram of corresponding Object Depth.To produce dynamic depth image 610,630 and 640, wherein depth image 620 corresponds to original stereo-picture to degree of depth time generator 430 according to original depth image 620.The GTG value of whole image of dynamic depth image 610 is adjusted into 255 by degree of depth time generator 430, meaning is namely without the content of the degree of depth, after two dimensional image and 610 combinations of dynamic depth image, it is still pure two dimensional image, (actual in before screen) when watching, can experience two dimensional image and be presented on screen plane 650 in screen plane 650 left sides as spectators from Fig. 6.The GTG value of whole image of dynamic depth image 640 is adjusted into 0 by degree of depth time generator 430, and two dimensional image and dynamic depth image 640 in conjunction with after stereo-picture can experience object in stereo-picture all in the same degree of depth of screen inside.GTG value in dynamic depth image 620 through adjusting, makes the excursion of GTG value less a little, so the Object Depth of the stereo-picture that can experience of spectators changes, and more original stereo-picture is few.
In one embodiment, when the user watches stereo game (non-two dimensional image is converted to stereo-picture) and when suspending image, after degree of depth time generator 430 learns that input picture is still image, namely according to different image setting files, first depth image is adjusted into entirely in vain, then gradually strengthens the contrast of depth image, the user can experience the picture material that plays out this moment and graduate into three-dimensional by two dimension, and it is more and more darker that the depth of field also becomes, and moves up as whole image.
in another embodiment, when the user watches stereo-picture (being converted to stereo-picture by two dimensional image is produced) and when suspending image, after degree of depth time generator 430 learns that input picture is still image, namely according to different image setting files, first depth image is adjusted into complete white (GTG value 255), then gradually depth image is adjusted into complete black (GTG value 0), and carry out repeatedly a pre-determined number (for example 10 times), the stereoscopic image content that this moment, the user can actually experience broadcast becomes three-dimensional gradually by two dimension, and field depth is more and more large, dwindle gradually again field depth, and object retreats to the screen depths, an and pre-determined number repeatedly, move up as whole image.
in another embodiment, when the user watches 2-dimentional photo (being converted to stereo-picture without two dimensional image), because photo itself is still image, therefore degree of depth time generator 430 is after learning that input picture is still image, namely according to different image setting files, first present original depth image, again depth image is adjusted into full grey (for example the GTG value 128), again depth image is adjusted into gradually white (for example the GTG value 255), this moment, the user can experience the stereoscopic image content of broadcast by solid and field depth are large at the beginning, then field depth little by little dwindles and object maintains the screen depths, come again object gradually to advance on screen plane.
Yet above-described, it is only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence of namely generally doing according to claim of the present invention and invention description content changes and modifies, and all still remains within the scope of the patent.Arbitrary embodiment of the present invention or claim must not reached disclosed whole purposes or advantage or characteristics in addition.In addition, summary part and title are only the use in order to auxiliary patent document search, are not to limit interest field of the present invention.
Claims (20)
1. dynamic depth image producing method comprises:
Receive at least one input picture;
Judge whether the present image of one in this input picture is a still image; And
When this present image is this still image, obtain the corresponding depth image of this present image, and this depth image is applied mechanically a plurality of image setting files to produce many dynamic depth images.
2. dynamic depth image producing method as claimed in claim 1, before the step that produces corresponding this depth image of this present image, also comprise: should be stored in a frame buffer by present image.
3. dynamic depth image producing method as claimed in claim 1 judges that wherein whether the present image of one in this input picture is that the step of a still image also comprises:
Receive an image halt signal take this present image of judgement as this still image.
4. dynamic depth image producing method as claimed in claim 1 judges that wherein whether this present image in this input picture is that the step of this still image also comprises:
Calculate one first GTG value histogram of this present image;
Calculate one second GTG value histogram of an adjacent previous image of this present image; And
Consistent with this second GTG value histogram when this first GTG value histogram, judge that this present image is this still image.
5. dynamic depth image producing method as claimed in claim 1 judges that wherein whether this present image in this input picture is that the step of this still image also comprises:
When all pixels of this present image and an adjacent previous image are consistent, judge that this present image is this still image.
6. dynamic depth image producing method as claimed in claim 1, the step of wherein described a plurality of dynamic depth images being applied mechanically described a plurality of image setting files also comprises:
According to a predetermined time interval, described a plurality of dynamic depth images are applied mechanically respectively described a plurality of image setting file.
7. dynamic depth image producing method as claimed in claim 1, the step of wherein described a plurality of dynamic depth images being applied mechanically described a plurality of image setting files also comprises:
According to a predetermined image number, described a plurality of dynamic depth images are applied mechanically respectively described a plurality of image setting file.
8. dynamic depth image producing method as claimed in claim 1 also comprises:
According to this present image and described a plurality of dynamic depth image, produce many stereo-pictures; And
Play described a plurality of stereo-picture.
9. dynamic depth image producing method as claimed in claim 1, wherein this input picture is a stereo-picture.
10. dynamic depth image producing method as claimed in claim 1, wherein this input picture is a two dimensional image.
11. a stereoscopic display device comprises:
One depth analysis device in order to receive at least one input picture, judges whether the present image of one in this input picture is a still image, and wherein working as this present image is this still image, obtains the corresponding depth image of this present image; And
One time degree of depth generator is in order to apply mechanically a plurality of image setting files to produce many dynamic depth images to this depth image.
12. stereoscopic display device as claimed in claim 11, wherein this depth analysis device also should be stored in a frame buffer by present image.
13. stereoscopic display device as claimed in claim 11, wherein this depth analysis device also receives an image halt signal take this present image of judgement as this still image.
14. stereoscopic display device as claimed in claim 11, wherein this depth analysis device also calculates one second GTG value histogram of an adjacent previous image of one first GTG value histogram of this present image and this present image, wherein when this first GTG value histogram was consistent with this second GTG value histogram, this this present image of depth analysis device judgement was this still image.
15. stereoscopic display device as claimed in claim 11, wherein when all pixels of this present image and an adjacent previous image were consistent, this this present image of depth analysis device judgement was this still image.
16. stereoscopic display device as claimed in claim 11, wherein this degree of depth time generator also according to a predetermined time interval, is applied mechanically respectively described a plurality of image setting file to described a plurality of dynamic depth images.
17. stereoscopic display device as claimed in claim 11, wherein this degree of depth time generator also according to a predetermined image number, is applied mechanically respectively described a plurality of image setting file to described a plurality of dynamic depth images.
18. stereoscopic display device as claimed in claim 11, wherein this degree of depth time generator also according to this present image and described a plurality of dynamic depth image producing many stereo-pictures, and play described a plurality of stereo-picture.
19. stereoscopic display device as claimed in claim 11, wherein this input picture is a stereo-picture.
20. stereoscopic display device as claimed in claim 11, wherein this input picture is a two dimensional image.
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Application publication date: 20130515 |