CN102497564B - Multi-view angle stereo image generation method and device - Google Patents
Multi-view angle stereo image generation method and device Download PDFInfo
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Abstract
The invention relates to a method for generating a multi-view stereoscopic image, which comprises the following steps: providing a first two-dimensional image and a first depth map corresponding to the first two-dimensional image, wherein the first two-dimensional image has a first viewing angle; generating a second two-dimensional image according to the first two-dimensional image and the first depth map, wherein the second two-dimensional image has a second viewing angle, and the second viewing angle and the first viewing angle are adjacent viewing angles; generating a corresponding second depth map according to the second two-dimensional image; and generating a third two-dimensional image according to the second two-dimensional image and the second depth map, wherein the third two-dimensional image has a third viewing angle, and the third viewing angle and the second viewing angle are adjacent viewing angles. In addition, a multi-view angle stereo image generating device adopting the method is also provided. The invention can avoid serious distortion of the generated multi-view angle stereo image.
Description
Technical field
The invention relates to the technical field of multi-visual angle stereoscopic image, and particularly relevant for a kind of multi-visual angle stereoscopic image production method and adopt the multi-visual angle stereoscopic image generation device of the method.
Background technology
In recent years, the technology of image processing is constantly progressive, is representing that the mankind pursue more real visual experience constantly.And except the treatment technology of general image and color was promoted, the processing of multi-visual angle stereoscopic image had further increased the visual experience of solid space.
Present multi-visual angle stereoscopic image technology is to utilize a bidimensional image and a depth map (depth map) to produce many bidimensional images with other visual angle.Yet this technology can cause serious image distortion problem, with Fig. 1, it is described.
The schematic diagram that is existing multi-visual angle stereoscopic image generating technique shown in Figure 1.Please refer to Fig. 1, degree of depth drawing image unit (depth image based rendering, DIBR) 100 receive the bidimensional image view3 at first visual angle and a depth map DM3 corresponding to this bidimensional image view3, and both produce four bidimensional images with other visual angle according to this, indicate with view1, view2, view4 and view5 respectively.And in these four bidimensional images that generate, these two visual angle of bidimensional image view2 and view4 is all adjacent with the visual angle of bidimensional image view3, and these two visual angle of bidimensional image view1 and view5 is adjacent with the visual angle of bidimensional image view2 and view4 respectively.
Due to above-mentioned bidimensional image view2 with the pixel in bidimensional image view3 projection again, make bidimensional image view3 get to left dislocation preset displacement amount Δ shift, so bidimensional image view2 can be because capture-effect produce image breach (holes) from the different of visual angle.Same, bidimensional image view4 is with the pixel in bidimensional image view3 projection again, make bidimensional image view3 displacement preset displacement to the right amount Δ shift and get, so bidimensional image view4 also can produce because of capture-effect image breach (holes) from the different of visual angle.
And due to above-mentioned bidimensional image view1 with the pixel in bidimensional image view3 projection again, make bidimensional image view3 get to the preset displacement amount Δ shift of two times of left dislocations, so bidimensional image view1 can be because capture-effect produce two times of large image breach (holes) from the different of visual angle.In like manner, due to above-mentioned bidimensional image view5 with the pixel in bidimensional image view3 projection again, make the preset displacement amount Δ shift of two times of bidimensional image view3 displacements to the right and get, so bidimensional image view5 also can produce because of capture-effect two times of large image breach (holes) from the different of visual angle.Thus, just caused the serious distortion problem of multi-visual angle stereoscopic image.
By above-mentioned explanation as can be known, when the visual angle of the bidimensional image that produces was more, the situation of multi-visual angle stereoscopic image distortion will be more serious.
Summary of the invention
The invention provides a kind of multi-visual angle stereoscopic image production method, the multi-visual angle stereoscopic image that produces according to the method does not have the problem of serious distortion.
The invention provides a kind of multi-visual angle stereoscopic image generation device, it adopts above-mentioned multi-visual angle stereoscopic image production method.
The present invention proposes a kind of multi-visual angle stereoscopic image production method, and it comprises the following steps: to provide the first bidimensional image and the first depth map corresponding to the first bidimensional image, and wherein the first bidimensional image has the first visual angle; Produce the second bidimensional image according to the first bidimensional image and the first depth map, wherein the second bidimensional image has the second visual angle, and the second visual angle and the first visual angle are adjacent visual angle; Produce the second corresponding depth map according to the second bidimensional image; And produce the 3rd bidimensional image according to the second bidimensional image and the second depth map, wherein the 3rd bidimensional image has the 3rd visual angle, and the 3rd visual angle and the second visual angle are adjacent visual angle.
The present invention is another proposes a kind of multi-visual angle stereoscopic image generation device, and it includes: the first degree of depth drawing image unit, the first depth map generation unit and the second degree of depth drawing image unit.Above-mentioned the first degree of depth drawing image unit is in order to receive the first bidimensional image and the first depth map corresponding to the first bidimensional image, and produce the second bidimensional image according to the first bidimensional image and the first depth map, wherein the first bidimensional image has the first visual angle, the second bidimensional image has the second visual angle, and the second visual angle and the first visual angle are adjacent visual angle.The first above-mentioned depth map generation unit is in order to receiving the second bidimensional image, and produces according to this second corresponding depth map.And above-mentioned the second degree of depth drawing image unit is in order to receive the second above-mentioned bidimensional image and the second depth map, and produce the 3rd bidimensional image according to the second bidimensional image and the second depth map, wherein the 3rd bidimensional image has the 3rd visual angle, and the 3rd visual angle and the second visual angle are adjacent visual angle.
The mode that the present invention addresses the above problem, be first to produce the bidimensional image with adjacent visual angle according to a bidimensional image and a depth map corresponding to this bidimensional image, and produce corresponding depth map according to the bidimensional image that generates, and then further produce the bidimensional image with adjacent visual angle according to the bidimensional image and depth map corresponding to these bidimensional images that generate.Because the bidimensional image of each new generation is to be produced by the depth map corresponding with it of the bidimensional image with adjacent visual angle, therefore the displacement of the bidimensional image of each new generation all only has the preset displacement amount of a times, and does not have the preset displacement amount generation of several times (being for example two times).Therefore, the multi-visual angle stereoscopic image that produces according to method of the present invention does not have serious image distortion problem.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate appended graphicly, be described in detail below.
Description of drawings
The schematic diagram that is existing multi-visual angle stereoscopic image generating technique shown in Figure 1;
Fig. 2 is the schematic diagram according to the multi-visual angle stereoscopic image generation device of one embodiment of the invention;
Fig. 3 is the flow chart according to the visual angle stereopsis production method of one embodiment of the invention;
Fig. 4 is the schematic diagram according to the multi-visual angle stereoscopic image generation device of another embodiment of the present invention;
Fig. 5 is the schematic diagram according to the multi-visual angle stereoscopic image generation device of another embodiment of the present invention.
Wherein, Reference numeral:
20: the multi-visual angle stereoscopic image generation device
100,200,220,240: degree of depth drawing image unit
210,230,410,510: the depth map generation unit
View1, view2, view3, view4, view5, view3-1, view3-2: bidimensional image
DM2, DM3, DM4, DM3-1, DM3-2: depth map
Δ shift: preset displacement amount
S31, S32, S33, S34: step
Embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Fig. 2 is the schematic diagram according to the multi-visual angle stereoscopic image generation device of one embodiment of the invention.Please refer to Fig. 2, this multi-visual angle stereoscopic image generation device 20 includes degree of depth drawing image unit 200, depth map generation unit 210, degree of depth drawing image unit 220, depth map generation unit 230 and degree of depth drawing image unit 240.The bidimensional image view3 that degree of depth drawing image unit 200 has the first visual angle in order to reception and the depth map DM3 corresponding to this bidimensional image view3, and produce bidimensional image view2 and view4 according to these two.Above-mentioned bidimensional image view3, view2 and view4 have a visual angle separately, and these two visual angle of bidimensional image view2 and view4 is all adjacent visual angle with the visual angle of bidimensional image view3, but bidimensional image view2 and view4 these two visual angle is not to be adjacent visual angle.
Depth map generation unit 210 has the bidimensional image view2 at the second visual angle in order to reception, and produces according to this depth map DM2 corresponding to bidimensional image view2.In addition, depth map generation unit 210 also can send bidimensional image view2 and depth map DM2 to degree of depth drawing image unit 220.Degree of depth drawing image unit 220 is in order to receiving bidimensional image view2 and depth map DM2, and both produces the bidimensional image view1 with the 3rd visual angle according to this.This bidimensional image view1 also has a visual angle, and the visual angle of the visual angle of bidimensional image view1 and bidimensional image view2 is also adjacent visual angle.Similarly, depth map generation unit 230 has the bidimensional image view4 at the 4th visual angle in order to reception, and produces according to this depth map DM4 corresponding to bidimensional image view4.In addition, depth map generation unit 230 also can send bidimensional image view4 and depth map DM4 to degree of depth drawing image unit 240.Degree of depth drawing image unit 240 is in order to receiving bidimensional image view4 and depth map DM4, and both produces the bidimensional image view5 with the 5th visual angle according to this.This bidimensional image view5 also has a visual angle, and the visual angle of the visual angle of bidimensional image view5 and bidimensional image view4 is also adjacent visual angle.
Can know by above-mentioned explanation, because the bidimensional image of each new generation is to be produced by the depth map corresponding with it of the bidimensional image with adjacent visual angle, therefore the displacement of the bidimensional image of each new generation all only has the preset displacement amount Δ shift of a times, and does not have the preset displacement amount Δ shift generation of several times (being for example two times).Therefore, the multi-visual angle stereoscopic image that produces according to method of the present invention does not have serious image distortion problem.
It is worth mentioning that, in this example, degree of depth drawing image unit 200,220 and 240 is all to adopt degree of depth drawing image method (depth-image-based rendering, DIBR) come to produce a new bidimensional image with adjacent visual angle according to received bidimensional image and depth map, so this is not to limit the present invention.In addition, although above-mentioned example to produce 5 bidimensional images with different visual angles as example, so this is also non-in order to limit the present invention.For instance, if only need 3 bidimensional images with different visual angles, only need adopt degree of depth drawing image unit 200, depth map generation unit 210 and degree of depth drawing image unit 220 to derive bidimensional image view2 and view1 according to bidimensional image view3, or only adopt degree of depth drawing image unit 200, depth map generation unit 230 and degree of depth drawing image unit 240 to derive bidimensional image view4 according to bidimensional image view3 and view5 gets final product.Certainly, if need 6 bidimensional images with different visual angles, or even more bidimensional images with different visual angles, one of them derives the bidimensional image that other has different visual angles at least according to bidimensional image view1 and view5 can to set up new depth map generation unit and degree of depth drawing image unit.
By the above-mentioned explanation that each is implemented, this area has knows the knowledgeable usually when summarizing some basic operational steps of above-mentioned multi-visual angle stereoscopic image generation device, and one as shown in Figure 3.Fig. 3 is the flow chart according to the multi-visual angle stereoscopic image production method of one embodiment of the invention.Please refer to Fig. 3, at first this multi-visual angle stereoscopic image production method comprise the following steps:, the first bidimensional image and the first depth map corresponding to the first bidimensional image are provided, and wherein the first bidimensional image has the first visual angle (as shown in step S31).Then, produce the second bidimensional image according to above-mentioned the first bidimensional image and the first depth map, wherein the second bidimensional image has the second visual angle, and the second visual angle and the first visual angle are adjacent visual angle (as shown in step S32).Then, produce corresponding the second depth map (as shown in step S33) according to above-mentioned the second bidimensional image.Come, produce the 3rd bidimensional image according to above-mentioned the second bidimensional image and the second depth map, wherein the 3rd bidimensional image has the 3rd visual angle, and the 3rd visual angle and the second visual angle are adjacent visual angle (as shown in step S34).
Only pipe is in above-mentioned example, degree of depth drawing image unit 200 directly receives bidimensional image view3 with first visual angle and realizes with depth map DM3 corresponding to this bidimensional image view3, so this area has and knows that usually the knowledgeable is before the degree of depth drawing image unit 200 that know at Fig. 2, an also configurable depth map generation unit, the depth map generation unit 410 that indicates just like Fig. 4.In Fig. 4, indicate and be expressed as same object with the identical person of sign of Fig. 2.And depth map generation unit 410 shown in Figure 4 can have in order to reception the bidimensional image view3 at the first visual angle, and produces according to this depth map DM3 corresponding to this bidimensional image view3.Then, this depth map generation unit 410 will send bidimensional image view3 and depth map DM3 to degree of depth drawing image unit 200.
Certainly, this area has knows that usually the knowledgeable also ought know before the degree of depth drawing image unit 200 of Fig. 2, also can see through a depth map generation unit and receive two bidimensional images (can be considered and receive a stereopsis) with different visual angles, the depth map generation unit 510 that indicates just like Fig. 5.In Fig. 5, indicate and be expressed as same object with the identical person of sign of Fig. 2.And the difference of multi-visual angle stereoscopic image generation device shown in Figure 5 and multi-visual angle stereoscopic image generation device 20 shown in Figure 2, be that depth map generation unit 510 has the bidimensional image view3-1 and the bidimensional image view3-2 with second visual angle at the first visual angle in order to reception, and produce according to this depth map DM3-1 corresponding to bidimensional image view3-1, or produce according to this depth map DM3-2 corresponding to bidimensional image view3-2.Then, this depth map generation unit 510 will be with bidimensional image view3-1 and depth map DM3-1, or sends bidimensional image view3-2 and depth map DM3-2 to degree of depth drawing image unit 200.
In sum, the mode that the present invention addresses the above problem, be first to produce the bidimensional image with adjacent visual angle according to a bidimensional image and a depth map corresponding to this bidimensional image, and produce corresponding depth map according to the bidimensional image that generates, and then further produce the bidimensional image with adjacent visual angle according to the bidimensional image and depth map corresponding to these bidimensional images that generate.Because the bidimensional image of each new generation is to be produced by the depth map corresponding with it of the bidimensional image with adjacent visual angle, therefore the displacement of the bidimensional image of each new generation all only has the preset displacement amount of a times, and does not have the preset displacement amount generation of several times (being for example two times).Therefore, the multi-visual angle stereoscopic image that produces according to method of the present invention does not have serious image distortion problem.
Although the present invention discloses as above with preferred embodiment; so it is not to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when can do a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (6)
1. a multi-visual angle stereoscopic image production method, is characterized in that, comprising:
Provide one first bidimensional image with corresponding to one first depth map of this first bidimensional image, wherein this first bidimensional image has one first visual angle;
Produce one second bidimensional image according to this first bidimensional image and this first depth map, wherein this second bidimensional image has one second visual angle, and this second visual angle and this first visual angle are adjacent visual angle;
Produce one second corresponding depth map according to this second bidimensional image;
Produce one the 3rd bidimensional image according to this second bidimensional image and this second depth map, wherein the 3rd bidimensional image has one the 3rd visual angle, and the 3rd visual angle and this second visual angle are adjacent visual angle;
Produce this second bidimensional image with a degree of depth drawing image method according to this first bidimensional image and this first depth map, and produce the 3rd bidimensional image with this degree of depth drawing image method according to this second bidimensional image and this second depth map.
2. multi-visual angle stereoscopic image production method according to claim 1, it is characterized in that, also comprise according to this first bidimensional image and this first depth map and produce one the 4th bidimensional image, wherein the 4th bidimensional image has one the 4th visual angle, and the 4th visual angle and this first visual angle are also adjacent visual angle;
Produce the 4th bidimensional image with a degree of depth drawing image method according to this first bidimensional image and this first depth map.
3. multi-visual angle stereoscopic image production method according to claim 2, it is characterized in that, also comprise according to the 4th bidimensional image and produce one the 3rd corresponding depth map, and produce one the 5th bidimensional image according to the 4th bidimensional image and the 3rd depth map, wherein the 5th bidimensional image has one the 5th visual angle, and the 5th visual angle and the 4th visual angle are adjacent visual angle;
Produce the 5th bidimensional image with a degree of depth drawing image method according to the 4th bidimensional image and the 3rd depth map.
4. a multi-visual angle stereoscopic image generation device, is characterized in that, comprising:
One first degree of depth drawing image unit, in order to receive one first bidimensional image with corresponding to one first depth map of this first bidimensional image, and produce one second bidimensional image according to this first bidimensional image and this first depth map, wherein this first bidimensional image has one first visual angle, this second bidimensional image has one second visual angle, and this second visual angle and this first visual angle are adjacent visual angle;
One first depth map generation unit in order to receiving this second bidimensional image, and produces one second corresponding depth map according to this; And
One second degree of depth drawing image unit, in order to receive this second bidimensional image and this second depth map, and produce one the 3rd bidimensional image according to this second bidimensional image and this second depth map, wherein the 3rd bidimensional image has one the 3rd visual angle, and the 3rd visual angle and this second visual angle are adjacent visual angle;
This first degree of depth drawing image unit produces this second bidimensional image with a degree of depth drawing image method according to this first bidimensional image and this first depth map, and this second degree of depth drawing image unit produces the 3rd bidimensional image with this degree of depth drawing image method according to this second bidimensional image and this second depth map.
5. multi-visual angle stereoscopic image generation device according to claim 4, it is characterized in that, this first degree of depth drawing image unit also produces one the 4th bidimensional image according to this first bidimensional image and this first depth map, wherein the 4th bidimensional image has one the 4th visual angle, and the 4th visual angle and this first visual angle are also adjacent visual angle;
This first degree of depth drawing image unit produces the 4th bidimensional image with a degree of depth drawing image method according to this first bidimensional image and this first depth map.
6. multi-visual angle stereoscopic image generation device according to claim 5, is characterized in that, also comprises:
One second depth map generation unit is in order to produce one the 3rd corresponding depth map according to the 4th bidimensional image; And
One the 3rd degree of depth drawing image unit, in order to produce one the 5th bidimensional image according to the 4th bidimensional image and the 3rd depth map, wherein the 5th bidimensional image has one the 5th visual angle, and the 5th visual angle and the 4th visual angle are adjacent visual angle;
The 3rd degree of depth drawing image unit produces the 5th bidimensional image with a degree of depth drawing image method according to the 4th bidimensional image and the 3rd depth map.
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| TWI516091B (en) * | 2012-10-09 | 2016-01-01 | 友達光電股份有限公司 | Multi-view 3d display and method for generating multi-view 3d image data |
| TWI574547B (en) | 2015-11-18 | 2017-03-11 | 緯創資通股份有限公司 | Wireless transmission system, method and device for stereoscopic video |
| TWI567693B (en) * | 2016-05-17 | 2017-01-21 | 緯創資通股份有限公司 | Method and system for generating depth information |
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| CN101312540A (en) * | 2008-07-03 | 2008-11-26 | 浙江大学 | Virtual visual point synthesizing method based on depth and block information |
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| TWI398158B (en) * | 2009-12-01 | 2013-06-01 | Ind Tech Res Inst | Method for generating the depth of a stereo image |
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| CN101271583A (en) * | 2008-04-28 | 2008-09-24 | 清华大学 | Fast image drafting method based on depth drawing |
| CN101312540A (en) * | 2008-07-03 | 2008-11-26 | 浙江大学 | Virtual visual point synthesizing method based on depth and block information |
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| CN102497564A (en) | 2012-06-13 |
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