CN101866105A - Method for improving imaging resolution of transmission-type liquid crystal board exposure system - Google Patents
Method for improving imaging resolution of transmission-type liquid crystal board exposure system Download PDFInfo
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- CN101866105A CN101866105A CN 201010197904 CN201010197904A CN101866105A CN 101866105 A CN101866105 A CN 101866105A CN 201010197904 CN201010197904 CN 201010197904 CN 201010197904 A CN201010197904 A CN 201010197904A CN 101866105 A CN101866105 A CN 101866105A
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Abstract
The invention relates to a method for improving the imaging resolution of a transmission-type liquid crystal board exposure system. In the invention, a physical property that the grids of a transmission-type liquid crystal board shade light is utilized and an accurate-displacement liquid crystal imaging exposure device technology and a programmed control multiple exposure technology are adopted to improve the 4* digital imaging resolution of the transmission-type liquid crystal board and cover the grids on an image after exposure imaging, and thereby the effect of the exposure image of a transmission-type liquid crystal imaging system is greatly improved. The invention effectively improves the exposure physical resolution of transmission-type liquid crystal on a medium and simultaneously remedies the defect of the projection imaging grids of the pixel array of the liquid crystal board on the imaging quality, and thereby, the obtained image is clearer, truer and perfecter. The method is simple and easy to apply, the application is wide and the effect is very notable.
Description
Technical field
The present invention relates to a kind of method of digital exposure of liquid crystal imaging, particularly a kind of method that improves imaging resolution of transmission-type liquid crystal board exposure system.
Background technology
At present, along with the continuous development of computer information technology, digital image is widely used in the every field.The popularization and application of digital photographing and scanner produces a large amount of digital image information, adopts transmission-type liquid crystal board as the digital image-forming device, and the digital photography exposure that exposes on printing paper through light source irradiation is washed as equipment and adopted widely.
The digital exposure method of liquid crystal imaging is a kind of digital image directly to be exposed on printing paper or film, obtain the implementation method of black and white or chromophotograph and film at last through development, photographic fixing, clear water rinsing, digital image machine is as calculated delivered to imaging on the transmission-type liquid crystal board, through the light source irradiation liquid crystal board, by zoom lens ratio exposure image on printing paper or film as required, realize that fast digital image outputs on printing paper or the film.
Along with people are more and more higher to the requirement of picture quality, the development of digital equipment technology, digital image resolution is more and more higher, and there are the defective of grid and the deficiency of resolution after the transmission-type liquid crystal board picture element matrix projection imaging of available liquid crystal imaging, the higher resolution image that feasible photography obtains, the bigger pixel value of loss when using present industrialization liquid crystal board exposure image, especially when enlarged image, make picture quality have a greatly reduced quality, image effect is coarse, and the defective of grid is covered all at one glance; Therefore, the physical resolution of present industrialization product can't reach the practical application request of high-end exposure image.
For this reason, providing a kind of method that easy, obvious results improves imaging resolution of transmission-type liquid crystal board exposure system of using, is one of these those skilled in the art problem that should address.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, a kind of method easy, that obvious results improves imaging resolution of transmission-type liquid crystal board exposure system of using is provided.
The technical solution adopted in the present invention is for achieving the above object: a kind of method that improves imaging resolution of transmission-type liquid crystal board exposure system is characterized in that concrete implementation step is as follows:
A kind of method that improves imaging resolution of transmission-type liquid crystal board exposure system is characterized in that concrete implementation step is as follows:
(1) in order to guarantee to expose the effect of output image afterwards, at first carry out Flame Image Process, to be treated as the bitmap that equals 4 times of transmission-type liquid crystal board physical picture element values more than or equal to the electronic image files of the resolution of 4 times of transmission-type liquid crystal boards, split into 4 bitmaps consistent then with the liquid crystal board physical picture element.
Realize that with 2,000,000 pixel transmission formula liquid crystal boards 8,000,000 pixel exposure are example, the liquid crystal board physical picture element is 1920X1080=2,073,600, can realize 3840X2160=8 by the present invention, the image effect of 294,400 pixel liquid crystal plates exposure.
Need the pixel quantity of exposure image to should be the 3840X2160=8294400 pixel, when the pixel quantity of digital image is not 8294400, exposure system adopts method of interpolation, image interpolation algorithm has multiple, as Box, Triangle, Hermite, Mitchell, Bilinear etc., their interpolation is also had nothing in common with each other, in the present invention, when image pixel lazy weight 8294400, image need be amplified when surpassing 2 times, adopt Bicubic algorithm (being applicable to the situation that image amplifies), when image pixel quantity greater than 8294400, image need be dwindled when surpassing 2 times, adopt Lanczos3 algorithm (being applicable to the situation that image dwindles), other scaling adopts B-Spline algorithm (being applicable to the situation that the image zoom ratio is little).Carry out Flame Image Process, electronic image files is treated to the bmp bitmap of 8,000,000 pixels, bitmap of pixels is arranged as 3840X2160=8294400, is 4 times of exposure image parts (transmission-type liquid crystal board) physical picture element values.
Flame Image Process with 8294400 pixels according to from the top down 1 to 2160 the row and from left to right 1 to 3840 row modes arrange, the pixel logo that is positioned at first row and first row is A, the pixel logo that is positioned at first row and secondary series is B, the pixel logo that is positioned at second row and secondary series is C, and the pixel logo that is positioned at second row and first row is D.
With the row and column at pixel A place is starting point, downwards in every line, to the right every one row rule, choose all meet regular pixel point on the bitmap after, all be designated A.
With the row and column at pixel B place is starting point, downwards in every line, to the right every one row rule, choose all meet regular pixel point on the bitmap after, all be designated B.
With the row and column at pixel C place is starting point, downwards in every line, to the right every one row rule, choose all meet regular pixel point on the bitmap after, all be designated C.
With the row and column at pixel D place is starting point, downwards in every line, to the right every one row rule, choose all meet regular pixel point on the bitmap after, all be designated D.
Under the constant prerequisite of the sign of A, B, C, D and arrangement position, respectively with the pixel extraction of like-identified, form 4 2,000,000 pixel A, B, C, D bitmap, every bitmap is consistent with imaging liquid crystal board physical picture element value.
(2) exposure system is controlled to divide according to the bitmap after splitting and is sent for 4 times image to transmission-type liquid crystal board successively, when the A bitmap images on liquid crystal board during imaging, adopt LED light emitting diode lamp plate luminescent control system light source irradiation liquid crystal board, liquid crystal board epigraph A goes up imaging through camera lens at media (printing paper or film etc.), finishes exposure for the first time.
(3) the exposure system control control liquid crystal board pixel radius length that moves right is sent the imaging on liquid crystal board of B bitmap images, and system source irradiating liquid crystal plate, liquid crystal board epigraph B are finished exposure for the second time through camera lens imaging on printing paper or film.
(4) exposure system control control liquid crystal board moves down the pixel radius length, send the imaging on liquid crystal board of C bitmap images, and system source irradiating liquid crystal plate, liquid crystal board epigraph C are finished exposure for the third time through camera lens imaging on printing paper or film.
(5) exposure system control control liquid crystal board to
A left sideMobile pixel radius length is sent the imaging on liquid crystal board of D bitmap images, and system source irradiating liquid crystal plate, liquid crystal board epigraph D are finished the 4th exposure through camera lens imaging on printing paper or film.
Through accurate mobile transmission-type liquid crystal board, divide four four bitmaps of A, B, C, D to expose respectively and on printing paper or film, synthesize a complete image fractionation, realized that exposure image is higher than the effect of 4 times of transmissive liquid crystal panels physical resolution, simultaneously effectively cover the grid that the liquid crystal board grid produces on image, effectively improved the exposure image quality.
The invention has the beneficial effects as follows: the present invention is by the image deconsolidation process, utilize the physical property of transmission-type liquid crystal board grid shading, adopt precise displacement liquid crystal imaging photohead technology, programmed control multiple exposure technology, the grid after realizing transmission-type liquid crystal board raising digital exposure imaging resolution and covering exposure image on the image.The inventive method effectively improves the physical resolution that transmission-type liquid crystal board exposes on media, on image quality, remedied simultaneously the defective of liquid crystal board picture element matrix projection imaging grid, make exposed images not only on resolution, improve 4 times, covered the grid of liquid crystal board picture element matrix projection imaging simultaneously, the image that obtains is more clear, true, perfect.This method is simple, is widely used the effect highly significant.
Description of drawings
Fig. 1 is a liquid crystal exposure image mode work synoptic diagram;
Fig. 2 is 1920x1080=2,073,600 bitmap of pixels actual effect figure;
Fig. 3 is 1920x1080=2, the synoptic diagram after the transmission-type liquid crystal board exposure of 073,600 pixel;
Fig. 4 is that the bitmap of 3840X2160=8294400 pixel is split as A, B, C, D bitmap synoptic diagram;
Fig. 5 is the image synoptic diagram that exposure is for the first time finished;
Fig. 6 is the image synoptic diagram that exposure is for the second time finished;
Fig. 7 is the image synoptic diagram that exposes for the third time and finish;
Fig. 8 is that image net result synoptic diagram is finished in the 4th exposure.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to according to embodiment provided by the invention, structure, details are as follows for feature:
As Fig. 1-shown in Figure 8, improve the method for imaging resolution of transmission-type liquid crystal board exposure system, concrete implementation step is as follows:
The digital exposure system works structure of liquid crystal imaging of the present invention as shown in Figure 1, comprise light source 1, transmission-type liquid crystal board 2, camera lens 3, media 4, the light-emitting area of described parts light source 1 is towards the plane of incidence of transmission-type liquid crystal board 2, the image output face of transmission-type liquid crystal board 2 is towards the plane of incidence of camera lens 3, and the output face of camera lens 3 is towards media 4; Light source 1, transmission-type liquid crystal board 2, camera lens 3, media 4 each face are parallel and four planar central are positioned on the same axle center.
During work, transmission-type liquid crystal board 2 normally receives data image signal, unlatching, the closure time of system's control light source 1, and irradiation transmission-type liquid crystal board 2 to media 4, is finished the exposure to media 4 through camera lens; Obtain identical with transmission-type liquid crystal board 2 physical resolution image on the media 4.
Fig. 2 is 1920x1080=2, and 073,600 bitmap of pixels actual effect figure, each circle represent the pixel that exposes, and the centre does not have the space.The figure top is numeral liquid crystal board pixel columns laterally, the vertical numeral liquid crystal board number of lines of pixels in a figure left side.
Fig. 3 is 1920x1080=2, the effect that the synoptic diagram after the exposure of the transmission-type liquid crystal board of 073,600 pixel, each circle are represented to represent the pixel that exposes, middle space to expose grid between the liquid crystal board physical picture element of back produced.The figure top is numeral liquid crystal board pixel columns laterally, the vertical numeral liquid crystal board number of lines of pixels in a figure left side.
Fig. 4 is 4 1920X1080=2 that the bitmap of 3840X2160=8294400 pixel are split as A, B, C, D, 073, the fractionation rule of 600 bitmap of pixels, each circle of band English alphabet, expression splits the pixel of 4 bitmaps, the figure top is numeral liquid crystal board pixel columns laterally, the vertical numeral liquid crystal board number of lines of pixels in a figure left side.
Fig. 5 is that result schematic diagram is finished in exposure for the first time, and the exposure beginning is delivered to transmission-type liquid crystal board with the A bitmap, the liquid crystal board physical picture element is consistent with A bit image prime number, the control light source irradiation forms the exposure first time to media, forms first 2,000,000 pixel image on media.
Fig. 6 is that result schematic diagram is finished in exposure for the second time, after exposure is finished for the first time, the B bitmap is delivered to transmission-type liquid crystal board, after the radius distance of the accurate to the right mobile liquid crystal physical picture element of system's control liquid crystal board value, the control light source irradiation, formation forms second 2,000,000 pixel image to the exposure second time of media on media.
Fig. 7 exposes to finishing result schematic diagram for the third time, after exposure is finished for the second time, the C bitmap is delivered to transmission-type liquid crystal board, after the radius distance of the downward accurate mobile liquid crystal physical picture element value of system's control liquid crystal board, the control light source irradiation, formation forms the 3rd 2,000,000 pixel images to the exposure for the third time of media on media.
Fig. 8 is that result schematic diagram is finished in the 4th exposure, after exposure is finished for the third time, the D bitmap is delivered to transmission-type liquid crystal board, after the radius distance of the accurate left mobile liquid crystal physical picture element of system's control liquid crystal board value, the control light source irradiation, formation forms the 4th 2,000,000 pixel images to the 4th exposure of media on media, finish the perfect composograph of 8,000,000 bitmap of pixels simultaneously.
The present invention analyzes correlation data and illustrates effect:
Transmission-type liquid crystal board is because the restriction of processing technology, the interval that has certain size between each pixel, use a kind of wide height of each pixel of transmission-type liquid crystal board of 1920X1080 resolution to be 6 microns as the present invention, the spacing of each pixel is 3 microns, when when 8 cun printing paper (width is 203.2 millimeters) are gone up imaging, the wide height of each pixel is 0.071 millimeter, and pixel interval is 0.035 millimeter, and naked eyes can't be differentiated the interval between each pixel and pixel and the pixel; When 30 cun printing paper (width is 762 millimeters) are gone up imaging, the wide height of each pixel is 0.265 millimeter, pixel interval is 0.132 millimeter, this moment, naked eyes just can be seen the interval between thicker pixel and tangible pixel and the pixel, after using the present invention, originally the blank spaces reimaging (shown in synoptic diagram 5,6,7,8) between pixel and the pixel, effectively the quantity of physical picture element is true on the exposure media improves 4 times thereby make, the image that obtains is more clear, true, perfect, and does not have the interval between pixel and the pixel.
Use the method for four exposures among the present invention, the shake of image source is become well-regulated displacement, not only eliminated the interval between pixel and the pixel, and the valid pixel quantity on the light-sensitive medium has been improved 4 times, the image that obtains is more clear, true, perfect; Especially on large format or high density sensitization medium during imaging, effect is more obvious.
Above-mentioned detailed description of the method for this raising imaging resolution of transmission-type liquid crystal board exposure system being carried out with reference to embodiment is illustrative rather than determinate; Therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.
Claims (1)
1. method that improves imaging resolution of transmission-type liquid crystal board exposure system is characterized in that concrete implementation step is as follows:
(1) carries out Flame Image Process, will be treated as the bitmap that equals 4 times of transmission-type liquid crystal board physical picture element values, split into 4 bitmaps consistent then with the liquid crystal board physical picture element more than or equal to the electronic image files of the resolution of 4 times of transmission-type liquid crystal boards;
(2) will divide according to the bitmap after splitting and successively image be delivered to transmission-type liquid crystal board 4 times, when the 1st bitmap images on liquid crystal board during imaging, the control system light source adopts LED light emitting diode lamp plate luminous, and image is finished exposure for the first time through camera lens imaging on printing paper, light reaching the film medium;
(3) the control liquid crystal imaging device pixel radius length that moves right is sent the 2nd bitmap images imaging on liquid crystal board, and control system light source luminescent, image are finished exposure for the second time through camera lens imaging on printing paper, light reaching the film medium;
(4) control liquid crystal imaging device moves down the pixel radius length, send the 3rd bitmap images imaging on liquid crystal board, and control system light source luminescent, image are finished exposure for the third time through camera lens imaging on printing paper, light reaching the film medium;
(5) control liquid crystal imaging device is moved to the left the pixel radius length, send the 4th bitmap images imaging on liquid crystal board, and control system light source luminescent, image are finished the 4th exposure through camera lens imaging on printing paper, light reaching the film medium.
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| CN 201010197904 CN101866105A (en) | 2010-06-11 | 2010-06-11 | Method for improving imaging resolution of transmission-type liquid crystal board exposure system |
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Cited By (3)
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| CN102207672A (en) * | 2011-06-10 | 2011-10-05 | 天津爱安特科技股份有限公司 | Device for carrying out liquid crystal display (LCD) monochrome image mosaic by prism |
| CN109946917A (en) * | 2019-04-04 | 2019-06-28 | 忆备缩微科技(北京)有限公司 | A kind of imaging method by very-high solution color image on microfilm |
| CN110658674A (en) * | 2019-09-16 | 2020-01-07 | 忆备缩微科技(北京)有限公司 | Method and device for outputting electronic file to microfilm |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102207672A (en) * | 2011-06-10 | 2011-10-05 | 天津爱安特科技股份有限公司 | Device for carrying out liquid crystal display (LCD) monochrome image mosaic by prism |
| CN109946917A (en) * | 2019-04-04 | 2019-06-28 | 忆备缩微科技(北京)有限公司 | A kind of imaging method by very-high solution color image on microfilm |
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| CN110658674A (en) * | 2019-09-16 | 2020-01-07 | 忆备缩微科技(北京)有限公司 | Method and device for outputting electronic file to microfilm |
| CN110658674B (en) * | 2019-09-16 | 2022-09-09 | 忆备缩微科技(北京)有限公司 | Method and device for outputting electronic file to microfilm |
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Open date: 20101020 |