CN105898274B - A kind of 2D plus depth 3D renderings longitudinal direction storage method based on RGB compressions - Google Patents
A kind of 2D plus depth 3D renderings longitudinal direction storage method based on RGB compressions Download PDFInfo
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- CN105898274B CN105898274B CN201610227960.0A CN201610227960A CN105898274B CN 105898274 B CN105898274 B CN 105898274B CN 201610227960 A CN201610227960 A CN 201610227960A CN 105898274 B CN105898274 B CN 105898274B
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- G—PHYSICS
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
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Abstract
The invention discloses a kind of 2D plus depth 3D renderings longitudinal direction storage method based on RGB compressions.The picture that resolution ratio is A x B is longitudinally divided into three equal parts, then the portion of bottom is laterally divided into two equal portions；2D cromograms longitudinal compression to 2/3 is then placed in A x 2/3B regions, wherein top half Color are placed in the A x 1/3B regions at top, and bottom half Color are placed in the A x 1/3B regions at middle part；It will be placed on after depth map longitudinal compression to 2/3 by RGB channel compression in the A x1/3B regions of bottom, wherein depth map corresponding to top half Color is placed in the 1/2A x 1/3B regions of bottom side, and depth map corresponding to bottom half Color is placed in the 1/2A x 1/3B regions of bottom opposite side；2D plus depth images are then converted into more view views by conversion circuit or software.So as to which 3D display image quality is significantly increased in the case of other no expenses.
Description
Technical field：
The invention belongs to technical field of image processing, more particularly to a kind of 2D plus depth 3D renderings based on RGB compressions are indulged
To storage method.
Background technology：
It is currently based on the 2D and depth image that most of form of 3D display source file of 2D plus depths is each half in left and right
Form.As shown in figure 1, if the resolution ratio of target display screen is AxB, the image to be shown is 2D AxB and AxB
Depth map, viewing area is first divided into symmetrical two parts, left and right is respectively 0.5AxB.By 2D cromograms transverse compression one
Partly it is placed in a 0.5AxB region on the left side, then the 0.5AxB on the right region will be placed on after depth map transverse compression half
It is interior.2D plus depth images are then converted into more view views by proprietary circuit or software.
The shortcomings that this form, is that, because 2D and depth image or so respectively account for half, the information of such 2D images is horizontal
Half is compressed out, and the depth map on the right is only a gray-scale map, occupies tri- passages of RGB, it appears it is unbalanced, while wave
Space is taken.
The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the present invention, without answering
It has been the prior art well known to persons skilled in the art when being considered as recognizing or implying the information structure in any form.
The content of the invention：
It is an object of the invention to provide a kind of 2D plus depth 3D renderings longitudinal direction storage method based on RGB compressions, so that
Overcome it is above-mentioned in the prior art the defects of.
To achieve the above object, the invention provides
A kind of 2D plus depth 3D renderings longitudinal direction storage method based on RGB compressions, its step are：
(1) picture that resolution ratio is AxB is longitudinally divided into three equal parts, then the portion of bottom is laterally divided into two equal portions；
(2) by 2D cromograms longitudinal compression to 2/3, it is then placed in Ax2/3B regions, wherein top-half Color are put
Put in the Ax1/3B regions at top, bottom-half Color are placed in the Ax1/3B regions at middle part；
(3) will be placed on after depth map longitudinal compression to 2/3 by RGB channel compression in the Ax1/3B regions of bottom, its
Depth map corresponding to middle top-half Color is placed in the 1/2Ax1/3B regions of bottom side, bottom-half Color
Corresponding depth map is placed in the 1/2Ax1/3B regions of bottom opposite side；
(4) 2D plus depth images are then converted into more view views by conversion circuit or software.
Preferably, in above-mentioned technical proposal, RGB channel compress mode, rgb format is converted into YCbCr format, using every
Individual natural pixel places the mode of two depth points；Each natural pixel has three passages, and two depth points take two
Individual passage, remain next passage and correct use as CbCr.
Preferably, in above-mentioned technical proposal, YCbCr format is 420 forms, to spatially each 2x2 natural pixelOut individually compression, four points that CbCr is this 2x2 are public for the luminance extraction each put.
Preferably, in above-mentioned technical proposal, the depth information of R1 and B1 placements D (0,0) and D (1,0) position, R2 and G2 are put
Put D (2,0) and the depth information of D (3,0) position；G1 is placed and R1 identical contents, that is, D (0,0) depth information；
B2 is placed and R2 identical contents, that is, namely D (2,0) depth information；Remaining position is placed with this rule
Depth information.
Preferably, in above-mentioned technical proposal, when YCbCr format is reduced into RGB image, CbCr is corrected, if Dcb,
Dcr is Cb and Cr correct amount, then：
R1=1.164* (Y1-16)+1.596* (Cr-128)
G1=1.164* (Y1-16) -0.813* (Cr-128) -0.392* (Cb-128)
B1=1.164* (Y1-16)+2.017* (Cb-128)
R2=1.164* (Y2-16)+1.596* (Cr-128)
G2=1.164* (Y2-16) -0.813* (Cr-128) -0.392* (Cb-128)
B2=1.164* (Y2-16)+2.017* (Cb-128)
Due to R1=G1, then the formula for adding correct amount is:
1.596* (Cr+Dcr-128)=- 0.813* (Cr+Dcr-128) -0.392* (Cb+Dcb-128) (1)
Due to R2=B2, then the formula for adding correct amount is:
1.596* (Cr+Dcr-128)=2.017* (Cb+Dcb-128) (2)
(1) and (2) is solved, obtains Dcr and Dcb value；Bring Dcr and Dcb value into YCbCr again to turn in RGB formula, i.e.,
R', G', B' depth value after correction can be tried to achieve：
R'=1.164* (Y-16)+1.596* (Cr+Dcr-128)
G'=1.164* (Y-16) -0.813* (Cr+Dcr-128) -0.392* (Cb+Dcb-128)
B'=1.164* (Y-16)+2.017* (Cb+Dcb-128).
Compared with prior art, the present invention has the advantages that：
In the case where final display picture size is constant, by the more original mode of information content of original 2D cromograms part
Increase by 50%, human eye is more sensitive to lateral resolution less sensitive to longitudinal frame reduction, and this method does not reduce transverse direction
Resolution ratio, so can be higher than horizontal arrangement mode definition.Due to the multiplexing of RGB channel, while by original depth map portion
The more original location mode of information content divided also increases 50%.So as to by 3D display image quality in the situation without other expenses
Under be significantly increased.
Brief description of the drawings：
Fig. 1 is prior-art illustration；
Fig. 2 is 420 form YCbCr schematic diagrames；
Fig. 3 is 2D plus depth 3D rendering longitudinal direction storage method schematic diagram of the present invention based on RGB compressions；
Fig. 4 is 2D plus depth 3D rendering longitudinal direction storage method detailed schematic of the present invention based on RGB compressions；
Fig. 5 is the pixel memory area domain schematic diagram for placing depth graph region.
Embodiment：
The embodiment of the present invention is described in detail below, it is to be understood that protection scope of the present invention is not
Limited by embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
As shown in Figure 3-4, a kind of 2D plus depth 3D renderings longitudinal direction storage method based on RGB compressions, its step are：
(1) picture that resolution ratio is 1920 ╳ 1080 is longitudinally divided into three equal parts, then the portion of bottom is laterally divided into
Two equal portions；
(2) by 2D cromograms longitudinal compression to 2/3, it is then placed in the regions of 1920 ╳ 720, wherein top-half Color
It is placed in the regions of 1920 ╳ 360 at top, bottom-half Color are placed in the regions of 1920 ╳ 360 at middle part；
(3) will be placed on after depth map longitudinal compression to 2/3 by RGB channel compression in the regions of 1920 ╳ 360 of bottom,
Wherein depth map corresponding to top-half Color is placed in the regions of 960 ╳ 360 of bottom side, bottom-half
Depth map corresponding to Color is placed in the regions of 960 ╳ 360 of bottom opposite side；
(4) 2D plus depth images are then converted into more view views by conversion circuit or software.
As shown in Fig. 2 rgb format is converted into YCbCr format, using each natural two depth points of pixel placement
Mode；Each natural pixel has three passages, and two depth points take two passages, remain next passage and are rectified as CbCr
It is positive to use.
YCbCr format is 420 forms, to spatially each 2x2 natural pixel
Out individually compression, four points that CbCr is this 2x2 are public for the luminance extraction each put.
As shown in figure 5, R1 and B1 places the depth information of D (0,0) and D (1,0) position, R2 and G2 place D (2,0) and D
The depth information of (3,0) position；G1 is placed and R1 identical contents, that is, D (0,0) depth information；B2 is placed and R2
Identical content, that is, namely D (2,0) depth information；The depth information of remaining position is placed with this rule.
Preferably, in above-mentioned technical proposal, when YCbCr format is reduced into RGB image, CbCr is corrected, if Dcb,
Dcr is Cb and Cr correct amount, then：
R1=1.164* (Y1-16)+1.596* (Cr-128)
G1=1.164* (Y1-16) -0.813* (Cr-128) -0.392* (Cb-128)
B1=1.164* (Y1-16)+2.017* (Cb-128)
R2=1.164* (Y2-16)+1.596* (Cr-128)
G2=1.164* (Y2-16) -0.813* (Cr-128) -0.392* (Cb-128)
B2=1.164* (Y2-16)+2.017* (Cb-128)
Due to R1=G1, then the formula for adding correct amount is:
1.596* (Cr+Dcr-128)=- 0.813* (Cr+Dcr-128) -0.392* (Cb+Dcb-128) (1)
Due to R2=B2, then the formula for adding correct amount is:
1.596* (Cr+Dcr-128)=2.017* (Cb+Dcb-128) (2)
(1) and (2) is solved, obtains Dcr and Dcb value；Bring Dcr and Dcb value into YCbCr again to turn in RGB formula, i.e.,
R', G', B' depth value after correction can be tried to achieve：
R'=1.164* (Y-16)+1.596* (Cr+Dcr-128)
G'=1.164* (Y-16) -0.813* (Cr+Dcr-128) -0.392* (Cb+Dcb-128)
B'=1.164* (Y-16)+2.017* (Cb+Dcb-128).
The description of the foregoing specific illustrative embodiment to the present invention is to illustrate and the purpose of illustration.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can be much changed
And change.The purpose of selecting and describing the exemplary embodiment is that explain that the certain principles of the present invention and its reality should
With so that those skilled in the art can realize and utilize the present invention a variety of exemplaries and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (4)
1. a kind of 2D plus depth 3D renderings longitudinal direction storage method based on RGB compressions, its step are：
(1) picture that resolution ratio is A × B is longitudinally divided into three equal parts, then the portion of bottom is laterally divided into two equal portions；
(2) by 2D cromograms longitudinal compression to 2/3, it is then placed in A × 2/3B regions, wherein top half chromaticity diagram is placed on
In A × 1/3B regions at top, the latter half chromaticity diagram is placed in A × 1/3B regions at middle part；
(3) will be placed on after depth map longitudinal compression to 2/3 by RGB channel compression in A × 1/3B regions of bottom, wherein on
Depth map corresponding to half part chromaticity diagram is placed in 1/2A × 1/3B regions of bottom side, corresponding to the chromaticity diagram of the latter half
Depth map is placed in 1/2A × 1/3B regions of bottom opposite side；The RGB channel compression method, rgb format is converted to
YCbCr format, by the way of each natural pixel places two depth points；Each natural pixel has three passages, and two
Individual depth point takes two passages, remains next passage and corrects use as CbCr；
(4) 2D plus depth images are then converted into multiple views by conversion circuit or software.
2. according to the method for claim 1, it is characterised in that：The YCbCr format is 420 forms, to spatially each 2
× 2 natural pixelThe luminance extraction each put out individually compression, CbCr is this 2 × 2 four point public affairs
With.
3. according to the method for claim 2, it is characterised in that：R1 and B1 places the depth letter of D (0,0) and D (1,0) position
Breath, R2 and G2 place the depth information of D (2,0) and D (3,0) position；G1 is placed and R1 identical contents, that is, D (0,0) position
Put depth information；B2 is placed and R2 identical contents, that is, D (2,0) depth information；Remaining position is placed with this rule
The depth information put.
4. according to the method for claim 3, it is characterised in that：When YCbCr format is reduced into RGB image, CbCr is carried out
Correction, if Dcb, Dcr are Cb and Cr correct amount, then：
R1=1.164* (Y1-16)+1.596* (Cr-128)
G1=1.164* (Y1-16) -0.813* (Cr-128) -0.392* (Cb-128)
B1=1.164* (Y1-16)+2.017* (Cb-128)
R2=1.164* (Y2-16)+1.596* (Cr-128)
G2=1.164* (Y1-16) -0.813* (Cr-128) -0.392* (Cb-128)
B2=1.164* (Y1-16)+2.017* (Cb-128)
Due to R1=G1, then the formula for adding correct amount is：
1.596* (Cr+Dcr-128)=- 0.813* (Cr+Dcr-128) -0.392* (Cb+Dcb-128) (1)
Due to R2=B2, then the formula for adding correct amount is：
1.596* (Cr+Dcr-128)=2.017* (Cb+Dcb-128) (2)
(1) and (2) is solved, obtains Dcr and Dcb value；Dcr and Dcb value is substituted into YCbCr again to turn in RGB formula, you can ask
R ', G ', B ' depth values after must correcting：
R '=1.164* (Y1-16)+1.596* (Cr+Dcr-128)
G '=1.164* (Y1-16) -0.813* (Cr+Dcb-128) -0.392* (Cb+Dcb-128)
B '=1.164* (Y1-16)+1.596* (Cr+Dcb-128).
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