CN101251651B - High-resolution grating three-dimensional picture - Google Patents
High-resolution grating three-dimensional picture Download PDFInfo
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- CN101251651B CN101251651B CN200710079378A CN200710079378A CN101251651B CN 101251651 B CN101251651 B CN 101251651B CN 200710079378 A CN200710079378 A CN 200710079378A CN 200710079378 A CN200710079378 A CN 200710079378A CN 101251651 B CN101251651 B CN 101251651B
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Abstract
The present invention discloses a structure of a high definition grating three-dimensional picture and a manufacture method thereof. The three-dimensional picture consists of a grating and a sampling diagram. The output of the sampling diagram is combined with laser phototypesetting, halftone screen and color mixing techniques. With a laser phototypesetter, the components of RGB three colors are combined after gridding the sampling diagram, and the combined components are outputted to a film so as to be aligned with the subsequent color mixing chromatography to form a color picture which presents a clear and intensive three-dimensional image when being irradiated by a backlight source. The structure of the present invention solves the problems of the three-dimensional picture of scene depth fission, ghost and giddying, thereby greatly improving the definition of the images and effectively improving the watching comfort degree.
Description
Affiliated technical field:
The invention belongs to optics display technique field, relate to a kind of method for making and structure of grating three-dimensional picture.
Background technology:
Along with reaching its maturity of grating stereo imaging technique, stereotome watches freedom, stereoscopic sensation to reach the good advantage of adaptability by force with it, is progressively popularized in industries such as photography, advertisement and decorations.Stereotome is usually by 3 D grating with sampling figure is compound constitutes, and 3 D grating can be a slit, can be column mirror grating also, and sampling figure is the new images of being sampled again and being arranged in by a series of stereoscopic parallax image.The characteristics of sampling figure are that details is very abundant, and amount of image information is big, generally export with modes such as digital laser developing and printing, colored description air brushing, printings.
Two factor affecting the further developing and using of grating three-dimensional picture, one, stereoscopic depth can not be too big, otherwise the ghost image that scape image fission in front and back produces can't stand, image is clear inadequately, thorough, is unfavorable for showing the broad scene of great depth; Its two, moir appears easily, bring the sense of feeling dizzy, cause part beholder's incompatibility, hindered stereotome in the coml widespread use.
Trace it to its cause, mainly be in the present various colored digital picture way of output, the separation property of pixel is not high, most pixels still are interpenetrative, the requirement that this and sampling figure pixels across are separated from each other is a contradiction, must cause the fission of image under the effect of grating, visualize is that tangible ghost image always appears in the hard contrast details of front and back scape in the stereographic map; In addition, the not high stereographic map mismatch of bringing of dimensional accuracy of output picture is usually brought the insufferable sense of feeling dizzy.
Summary of the invention:
The present invention discloses a kind of structure of high-resolution grating three-dimensional picture, combines laser photo-typesetting output, partly transfers screen and colour mixture technology, and purpose is to solve stereotome fission, ghost image and the problem of feeling dizzy.
Principle of the present invention is, reconfigure after the RGB three colouring component screenizations with sampling figure, utilize laser photocomposing machine to output on same the film, the colour mixture look version alignment formation coloured image with the back presents clear thorough stereo-picture under the irradiation of backlight.Implementation procedure comprises: 1, and the pixel optimization of sampling figure; 2, screen method and parameter are selected; 3, laser photo-typesetting output film; 4, colour mixture look version and backlight.
Describe the process that realizes that the high-resolution stereo-picture shows below in detail.
The first step, the pixel optimization of the figure that samples.We at first will distinguish voxel unit and common pixel, each voxel unit is horizontally formed by the respective pixel of all parallax sequence chart, voxel should be foursquare, at this moment the transverse and longitudinal resolution unanimity of stereo-picture, relatively rationally, the shape of forming the common pixel of voxel so should be the vertical bar shape.Obviously, this is different to the understanding of primitive shape when adopting traditional approach output sampling figure, in common stereotome, longitudinal frame is far above horizontal, therefore has the bulk information redundancy, need compress and optimizes sampling figure longitudinal data.Suppose that grating pitch is p, then the physical size of the synthetic stereotome of the parallax sequence chart of N width of cloth w*h pixel is (w*p) * (h*p), and the sampled images element is (w*N) * h.If the pixel of original parallax sequence chart is too many, need to compress synthetic again sampling figure according to the size of final stereotome.
See the problem of feeling dizzy that reverted image brings in some position in order to solve better, it is synthetic first or last width of cloth setting of parallax sequence chart can be helped black sampling again, Here it is so-called voxel isolation technology, as long as outside certain distance, eyes can not seen reverted image again, therefore the sense of feeling dizzy can not occur.Certainly, this voxel is isolated some negative effects, there is no need generally speaking to adopt.
In second step, screen method and parameter are selected.What the amplitude modulation screening technology that adopts with printing industry was different is, shape and size that each pixel is schemed in sampling are fixed up, and do not have the angle of screen, the selection problem of frequency, the just shape of diaphanous spot that can change and optimize, therefore, it is more suitable to begin to be called gridding from below.Each color component grid representation of x*y, each point is represented an exposure station of laser photo-typesetting sheet on the grid, is divided into two kinds of bright spot and dim spots, and bright spot transmitted light, dim spot shut out the light, and the quantity of the bright spot in the grid or area ratio are represented corresponding color value.Each pixel contains R, G, three color components of B on the sampling figure, is vertical arrangement after the gridding, and three grids show a complete pixel, and pixel grid is long narrow square vertical distribution; N pixel grid horizontally becomes a stereo-unit, is square.
Gridding method is followed following principle: 1. bright spot distributes with clustered pattern; 2. the center of gravity of bright spot drops on the center of grid; 3. bright spot is with the designated shape precedence partition.Consider imperfectization of processes such as laser photocomposing machine exposure, development, a spot of bright spot should preferentially be gathered into bulks such as square, circle, in order to avoid the dim spot that is expanded " floods ".Four kinds of typical bright spots of grid are shaped as rhombus, rectangle, horizontal line, vertical line, and in the distribution of most grids, bright spot does not have these typical shape, even so, should be trend with the designated shape also during gridding.
Bright spot in the grid can flock together in the mode of rhombus, and at this moment the colour stability of stereo-picture and pixel separation are relatively more balanced.
Bright spot in the grid can flock together in rectangular mode, and at this moment the colour stability of stereo-picture and pixel separation are relatively more balanced.
Bright spot in the grid can flock together in the preferential mode of horizontal line, and the colour stability of stereo-picture is better.
Bright spot in the grid can also flock together in the preferential mode of vertical line, and the pixel separation of stereo-picture is better.
According to gridding rule and bright spot shape, can provide a kind of colouring algorithm to realize the quick gridding of pixel.Set up a two-dimensional array G[x earlier] [y], give array assignment by the sequencing that bright spot occurs, for example first bright spot appears at the centre of grid, with the array element assignment 1 in centre position; Second bright spot appears at the upside of first bright spot, with the array element assignment 2 of this position; The 3rd bright spot appears at the downside of first bright spot, with the array element assignment 3 of this position; If K bright spot appears at the capable i row of j, then G[i] [j]=K.Needing certain color value of the pixel of gridding coding is C, 0≤C≤255, total C*x*y/255 bright spot after the gridding, if G[i] [j]≤C*x*y/255, then this is a bright spot, otherwise is dim spot, and this process is compiled into program relief computing machine and handles the realization gridding automatically.
In order to solve the not high ghost image problem of bringing of pixel separation degree better, can consider with first row of each pixel grid and (or) last row be provided with help black, so-called pixel separation technology that Here it is.
Grating pitch p (unit: mm), disparity map quantity N, laser photo-typesetting precision be D (unit: dpi) and the pass between sizing grid x, the y be:
x＝p*D/N/25.4
y＝p*D/76.2
If can determine the size of p as required, x, y are that the condition of integer is to satisfy easily.But the p value can not be selected generally speaking, need adjust x, y, the direct height [y+0.5] that y is rounded up and can determine grid, and width has two kinds [x] and [x]+1, here [] is for rounding operator, must according to circumstances do the gridding processing of different sizes when that is to say sampling figure gridding to pixel, this pixel size inequality is brought the unmatched vestige of image sometimes, can introduce certain randomness to the painted order of bright spot when pixel network is formatted and solve.
In the 3rd step, the sampling figure of gridding outputs on the film with laser photocomposing machine.Though such phototypesetting sheet is a black and white, has comprised sampling and schemed all colouring informations.Film setter has site precision and two important indicators of effective picture size, and the phototypesetting precision of current main-stream machine all is not less than 2400dpi, and the useful area of large format film setter has surpassed 2000mm*1200mm, satisfies the requirement of output stereo-picture fully.
The 4th step, colour mixture look version and backlight.Colour mixture look version is made of R, G, B three look ledgements, vertically be staggered, the height of one group of R, G, B lines equates with the height of voxel grid is strict, as long as it is look version alignment is also fixing in the back of phototypesetting film, then just coupling is together exactly for each monochromatic grid and corresponding color lump, cooperate grating, under the illumination of lamp box, show bright-coloured thorough stereo-picture.
Sampling figure output intent provided by the invention has been guaranteed the independence of pixel, has improved the vividness of color, can increase substantially the stereoscopic sensation and the sharpness of picture.In addition, present craft precision has satisfied the production requirement of slit grating and column mirror grating, can better mate with high-precision laser photo-typesetting sheet, has solved the problem of feeling dizzy of stereotome.
Description of drawings:
Fig. 1 is sampling figure signal.Be made of w*h voxel unit (1), each voxel is square.
Fig. 2 is the synoptic diagram of voxel unit (1).Each voxel (1) is horizontally formed by N pixel grid (2), and the frame of broken lines in the diagram is represented a pixel grid (2); Each pixel grid (2) contains R, G, three monochromatic grids of B (3), is vertical arrangement.
Fig. 3 is the synoptic diagram of monochromatic grid (3), and grid (3) is made of dim spot (4) and bright spot (5).Sizing grid is 8*32 among this figure, and Fig. 3 a represents that a color value is 137 grid, and bright spot is gathered into typical rhombus; Fig. 3 b represents that a color value is 142 grid, and bright spot is gathered into typical rectangle; Fig. 3 c represents that a color value is 77 grid, and bright spot is assembled in the preferential mode of horizontal line; Fig. 3 d represents that a color value is 111 grid, and bright spot is assembled in the preferential mode of vertical line.
Fig. 4 is the synoptic diagram of colour mixture look version, is made of red lines (6), green lines (7) and blue lines (8), and continuously apart from being staggered, the height of a group of R, G, B lines equates with the height of voxel grid vertically.
Embodiment:
Make a high-resolution stereotome.
Preparing a breadth is 80cm*60cm, and thickness is the standard 40LPI slit grating of 5mm, and pitch p=0.635mm prepares 12 width of cloth parallax sequence chart, and every width of cloth image zoom is become the 1260*945 size, the solid sampling figure that synthetic then size is 15120*945.The phototypesetting precision of laser photocomposing machine is 2400dpi, and the size of each monochromatic grid is 5*20, adopts the rectangle clustered pattern that whole sampling figure is carried out gridding and handles, and outputs on the laser photo film then.Prepare a colour mixture look version lamp sheet, the width of R, G, B three colo(u)r streak bars is 0.2117mm, and every group of line thickness is 0.635mm.Colour mixture look version can adopt the mode of spot color printing to prepare, and be convenient to produce in batches, and cost is lower; If the mode with three look laser explosures outputs on the lamp sheet, then lost cost advantage fully.To be fixed on the lamp box behind slit grating, phototypesetting film, the contraposition of colour mixture look version, the alignment, form stereo-picture.
Indiscriminately imitate same method and can make plane change figure or animation, no longer describe in detail here.
Aim of the present invention is, utilizes laser photo-typesetting output sampling figure, realizes the high separation property of pixel, utilizes the colour mixture coding techniques to realize that the colour of black and white output shows.The solution that the professional person provides according to this instructions can be easy to write out a lot of relevant case study on implementation, can exchange as putting in order of RGB three looks, sampling figure can also be decomposed into other color component or other special-purpose color, even to allow RGB grid between the adjacent voxel change and put in order also be feasible, at this moment color lump will make corresponding changes on the look version, no longer be straight line, increased some difficulties to alignment.Intention of the present invention will comprise all embodiment that meet with claims.
Claims (10)
1. high-resolution stereotome is combined by the sampling figure of grating and its back, and grating can be a slit grating, can be column mirror grating also, it is characterized in that, sampling figure is the colour picture that is combined by laser photo film and colour mixture look version.
2. stereotome as claimed in claim 1, its feature also is, continuous accent pixel on the sampling figure is carried out the gridding coding, and R, G, B three colouring components are outputed on same the laser photo film, colour mixture look version is made of R, G, B three looks, utilizes the colour mixture coding techniques to realize that the colour of black and white output shows.
3. stereotome as claimed in claim 2, its feature are that also R, G, the B color component of each colour element on laser photo film is vertical arrangement on the sampling figure, and colour mixture look version is made of R, G, B three look ledgements, vertically is being staggered.
4. stereotome as claimed in claim 3, its feature is that also the grid of demonstration R, G, B color component is long narrow side's shape and vertically distributes, and N pixel grid horizontally becomes a voxel grid, be square, N is the parallax sequence chart quantity of compound stereoscopic picture.
5. stereotome as claimed in claim 4, its feature are that also bright spot quantity in each color component grid or area ratio are represented corresponding color value, and bright spot flocks together, and the gravity centre distribution of bright spot is at the center of grid.
6. stereotome as claimed in claim 5, its feature are that also a left side or the right margin of each grid are set to dim spot, increase interval and independence between each pixel.
7. as claim 5 or 6 described stereotomes, its feature is that also the bright spot in the grid flocks together in the preferential mode of rhombus.
8. as claim 5 or 6 described stereotomes, its feature is that also the bright spot in the grid flocks together in the preferential mode of rectangle.
9. as claim 5 or 6 described stereotomes, its feature is that also the bright spot in the grid flocks together in the preferential mode of horizontal line.
10. as claim 5 or 6 described stereotomes, its feature is that also the bright spot in the grid flocks together in the preferential mode of vertical line.
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| CN200710079378A CN101251651B (en) | 2007-02-25 | 2007-02-25 | High-resolution grating three-dimensional picture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9869970B2 (en) | 2015-02-17 | 2018-01-16 | Wistron Corp. | Hologram module, display device having the same and wearing device having the same |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920627B (en) * | 2009-06-17 | 2013-02-06 | 王守觉 | Method for drawing slit grating three-dimensional picture by mirror surface reflection |
| CN102243377A (en) * | 2010-05-13 | 2011-11-16 | 薄淑英 | High-definition four-dimensional (4D) raster picture |
| CN102241207A (en) * | 2010-05-13 | 2011-11-16 | 薄淑英 | Single color printing method for colored three-dimensional image |
| CN102253443A (en) * | 2011-07-30 | 2011-11-23 | 福州大学 | Grating and three-dimensional display device |
| CN103383520A (en) * | 2012-05-03 | 2013-11-06 | 薄淑英 | Color laser phototypesetting sheet |
| CN103676163B (en) * | 2012-09-12 | 2017-06-30 | 北京康得新三维科技有限责任公司 | High-resolution grating three-dimensional picture |
| CN109000954A (en) * | 2018-09-14 | 2018-12-14 | 安徽三地测绘有限公司 | A kind of object numerical sample device and its method of sampling based on square mesh method |
| CN110068933B (en) * | 2019-04-19 | 2021-06-01 | 陈少康 | Manufacturing method of red and blue 3D (three-dimensional) picture based on grating display |
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| CN1248758A (en) * | 1998-09-23 | 2000-03-29 | 邓兴峰 | Method for making slit raster 3-D picture |
| CN2373867Y (en) * | 1999-05-21 | 2000-04-12 | 邓兴峰 | Stereo cartoon device |
| CN1350212A (en) * | 2001-11-07 | 2002-05-22 | 苏州苏大维格数码光学有限公司 | Digital 3D optical variable image making process and laser photocomposition system |
| US6778295B1 (en) * | 2000-01-26 | 2004-08-17 | Lanier Worldwide, Inc. | Composite three-dimensional image display and method of preparing same from color photographs and LCD displays |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1248758A (en) * | 1998-09-23 | 2000-03-29 | 邓兴峰 | Method for making slit raster 3-D picture |
| CN2373867Y (en) * | 1999-05-21 | 2000-04-12 | 邓兴峰 | Stereo cartoon device |
| US6778295B1 (en) * | 2000-01-26 | 2004-08-17 | Lanier Worldwide, Inc. | Composite three-dimensional image display and method of preparing same from color photographs and LCD displays |
| CN1350212A (en) * | 2001-11-07 | 2002-05-22 | 苏州苏大维格数码光学有限公司 | Digital 3D optical variable image making process and laser photocomposition system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US9869970B2 (en) | 2015-02-17 | 2018-01-16 | Wistron Corp. | Hologram module, display device having the same and wearing device having the same |
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