CN104168430A - TDI CCD focal plane coding super-resolution imaging device and method - Google Patents
TDI CCD focal plane coding super-resolution imaging device and method Download PDFInfo
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Abstract
The invention discloses a super-resolution optical imaging device based on TDI CCD focal plane coding. The device comprises an off-axis three-mirror optical system, a TDI CCD coupling and coding template, an optical TDI CCD detector and an image reconstruction module. The invention further discloses a super-resolution optical imaging method based on TDI CCD focal plane coding. The method comprises the steps of setting a focal plane array of the optical TDI CCD detector, setting the TDI CCD coupling and coding template, acquiring four low-resolution coded image arrays of the same scene, conducting image pre-processing and conducting super-resolution image reconstruction. By the adoption of the super-resolution optical imaging device and method based on TDI CCD focal plane coding, more information of a target scene can be captured, super-resolution imaging capacity can be improved, sampling frequency can be improved, and the confounding effect is weakened.
Description
Technical field
The present invention relates to IMAQ and reconstruct in a kind of super-resolution image technical field of imaging, specifically a kind of super-resolution optical imaging device and method based on TDI CCD focal plane coding, belongs to technical field of image processing.
Background technology
Super-resolution optical imaging is in every field, as space remote sensing, target recognition and tracking etc. have great demand.Although optical image technology has been obtained huge progress, but be subject to the restriction of the factors such as detector manufacture craft, condition of work, power consumption cost, at present conventional optical detector array scale is less, pixel dimension is larger, is not enough to tackle the ever-increasing imaging resolution demand of people.
Existing super-resolution imaging method mainly comprises traditional micro scanning technology and sub-pixel splicing.Micro scanning can be regarded as an over-sampling process, the displacement that gated sweep device makes system imaging produce 1/N pixel in horizontal stroke, ordinate direction, obtain N × N frame undersampled image, then use image to process several Displacement images are fused into piece image according to sample mode, realize and put forward high-resolution object.Sub-pixel splicing is, with a camera, same ground object target is become to several groups of pictures, makes to be formed in image and the vertical linear array direction apart image of 1/2 pixel of linear array direction at a distance of 1/2 pixel.Utilize the character that differs 1/2 pixel between two groups of images, carry out data processing and image co-registration, image spatial resolution can be improved.Micro scanning technology and sub-pixel splicing are all by the multiframe undersampled image of the pixel distance of less than that misplaces mutually on ccd array on the whole, utilize Computer Image Processing to obtain high-resolution original scene.
Traditional super-resolution imaging technology, no matter be micro scanning or sub-pixel technology, it is all the sample rate that indirectly improves system, increase final hits, but these technology all do not make the structure of CCD itself change, sample frequency is still lower than Nyquist frequency, the pattern matrix obtaining also comprises a large amount of confused phenomenons, in the time carrying out image reconstruction by image processing algorithm, just improve in some sense data volume, system does not really capture certain high-frequency information of scene, so can not obscure and realize image Accurate Reconstruction because of raising sample frequency blanketing frequency.
Summary of the invention
Technical problem to be solved by this invention is, a kind of TDI CCD focal plane coding super-resolution imaging device and method is provided, and these apparatus and method can capture target scene more information, improve super-resolution imaging ability, improve sample frequency, reduce confusion effect.
The technical scheme that the present invention solves the problems of the technologies described above is: a kind of super-resolution optical imaging device based on TDI CCD focal plane coding, and described device comprises from axle three reflecting optical systems, TDI CCD coupling fgs encoder template, optics TDI ccd detector and Image Reconstruction module;
Described from axle three reflecting optical systems, for the incident ray of control observation scene, and make light arrive described TDI CCD coupling coding templet to carry out spatial domain modulation;
Described TDI CCD coupling coding templet, for carrying out spatial domain modulation to entering from the light of axle three reflecting optical systems, and makes the described optics TDI ccd detector array of light arrival carry out low resolution imaging;
Described optics TDI ccd detector, for being converted into the signal of telecommunication by the light signal after TDI CCD coupling coding templet spatial domain modulation;
Described Image Reconstruction module, for being transformed to the signal of telecommunication obtaining, described optics TDI ccd detector carries out preliminary treatment, and adopt pixel rearrangement method, and the low resolution optical coded image of filtering noise is carried out to Image Reconstruction, finally obtain super-resolution optical imagery.
Described optical system adopts and instead designs from axle three, the incident ray of described optical system observation scene enters optical system primary mirror by rotating speculum, after primary mirror reflection, arrive secondary mirror, arrive three mirrors through secondary mirror reflection again, reach three mirrors through secondary mirror reflection again, be close to TDI CCD and aim at a coding templet designing of placement, after making light via the modulation of TDI CCD coupling coding templet, arrive optics TDI ccd detector array through three mirror reflections, finally obtain super-resolution optical imagery by Image Reconstruction.
Describedly there is not aberration and second order spectrum from axle three reflecting optical systems, be applicable to the imaging of wide spectrum scope.
Described from axle three reflecting optical systems both can utilize refluxing reflection mirror folded optical path shorten volume, easily realize light-weight design, can obtain long-focus, large visual field, wide-aperture combination with aspherical mirror again, meeting spatial is applied the requirement to Optical System Design.
Based on a super-resolution optical imaging method for TDI CCD focal plane coding, comprise the steps:
(1) optics TDI ccd detector focal plane array is set:
The linear array TDI CCD that is 16 by 4 integration progression order is spliced into a focal plane array, the optics TDI ccd detector focal plane array that obtains setting;
(2) TDI CCD coupling coding templet is set:
2a) in the template of the working region of spatial light modulator, mark off successively the positive direction region equating with optics TDI ccd detector horizontal and vertical direction pixel number by horizontal and vertical direction, this square area is identical with the single pixel dimension of optics TDI ccd detector;
2b) square area is divided into from top to bottom to 4 wide contour small rectangles in optical detector linear array direction, the logical light of Part I of the coding templet that first 16 grades of all pixels of TDI CCD linear array are corresponding, the logical light of Part II of the coding templet that second 16 grades all pixels of TDI CCD linear array are corresponding, the 3rd the 16 grades logical light of coding templet Part III that all pixels of TDI CCD linear array are corresponding, the logical light of Part IV of the coding templet that the 4th 16 grades all pixels of TDI CCD linear array are corresponding, the TDI CCD that obtains the setting coding templet that is coupled;
(3) obtain the low resolution coded image array of four width Same Scene:
3a) by step 2b) in the TDI CCD coupling coding templet that obtains be placed on before optics TDI ccd detector, be close to the focal plane array of optics TDI ccd detector, all pixels that all square area on TDI CCD coupling coding templet list with focal plane array are aimed at one by one;
3b) utilize encoding measurement method, obtain successively four width low resolution optical images of Same Scene;
In this step, the concrete steps of described encoding measurement method are as follows:
The first step, press the shutter of high-resolution imaging system, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of the Part I transmission region of first 16 grades of each pixel coding modules of TDI CCD linear array, stop other parts, list record the first width low resolution optical coded image at focal plane array;
Second step, after the first width low resolution optical coded image has recorded, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of the Part II transmission region of second the 16 grades each pixel coding modules of TDI CCD linear array, stop other parts, list record the second width low resolution optical coded image at focal plane array;
The 3rd step, after the second width low resolution optical coded image has recorded, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of the Part III transmission region of the 3rd the 16 grades each pixel coding modules of TDI CCD linear array, stop other parts, list record the 3rd width low resolution optical coded image at focal plane array;
The 4th step, after the 3rd width low resolution optical coded image has recorded, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of the Part IV transmission region of the 4th the 16 grades each pixel coding modules of TDI CCD linear array, stop other parts, list record the 4th width low resolution optical coded image at focal plane array.
(4) image preliminary treatment:
By median filter, the four width low resolution optical coded images that obtain are carried out to preliminary treatment, filtering noise wherein, the low resolution optical coded image of acquisition four width filtering noises;
(5) super-resolution image reconstruction:
5a) create target image matrix, the line number of target image matrix equals the line number of the low resolution optical coded image of 4 times, and target image matrix column number equals the columns of low resolution optical coded image;
5b) adopt pixel rearrangement method, the optical encoding image of four width filtering noises is carried out to Image Reconstruction, obtain super-resolution optical imagery.
The concrete steps of the pixel rearrangement method in this step are as follows:
The first step, by the pixel value of capable the low resolution optical coded image 4i-3 of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i-3, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns.
Second step, by the pixel value of capable the low resolution optical coded image 4i-2 of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i-2, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns.
The 3rd step, by the pixel value of capable the low resolution optical coded image 4i-1 of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i-1, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns.
The 4th step, by the pixel value of capable the low resolution optical coded image 4i of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns.
Adopt after said apparatus and method, the invention has the advantages that, first, because the present invention has added TDI CCD coupling coding templet before the focal plane array of optics TDI ccd detector, utilize TDI CCD coupling coding templet to segment CCD pixel cross rail directional resolution, capture target scene more information, overcome the deficiency being difficult in prior art by reducing pixel dimension or increase the mode of camera focus to improve imaging resolution, make the present invention there is super-resolution imaging ability.
Second, because the present invention adopts pixel rearrangement method, utilize the relevant complementary characteristic of several low-resolution image information, or low resolution aliased image is in conjunction with optimized reconstruction, improve sample frequency, reduce confusion effect, overcome traditional imaging technique for detector low-frequency sampling the limitation to systemic resolution, obtain super-resolution optical imagery.
Brief description of the drawings
Shown in Fig. 1 is structural representation of the present invention;
Shown in Fig. 2 is optical system light path figure of the present invention;
Shown in Fig. 3 is block diagram of the present invention;
Shown in Fig. 4 is optics TDI ccd detector focal plane array schematic diagram in the present invention;
Shown in Fig. 5 is the single pixel pixel of detector rearrangement method schematic diagram in the present invention;
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in more detail.
With reference to accompanying drawing 1, the inventive system comprises be coupled coding templet, optics TDI ccd detector and Image Reconstruction module from axle three reflecting optical systems, TDI CCD.
Incident ray from axle three reflecting optical systems for control observation scene, and make the described TDI CCD coupling coding templet of light arrival carry out spatial domain modulation.
TDI CCD coupling coding templet is used for carrying out spatial domain modulation to entering from the light of axle three reflecting optical systems, and makes light arrival optics TDI ccd detector array carry out low resolution imaging.
Optics TDI ccd detector is for being converted into the signal of telecommunication by the light signal after TDI CCD coupling coding templet spatial domain modulation.
Image Reconstruction module is carried out preliminary treatment for optics TDI ccd detector is transformed to the signal of telecommunication obtaining, and adopts pixel rearrangement method, and the low resolution optical coded image of filtering noise is carried out to Image Reconstruction, finally obtains super-resolution optical imagery.
With reference to the index path of accompanying drawing 2, optical system adopts and instead designs from axle three.
In Fig. 2,1 for rotating speculum, and 2 is primary mirror, and 3 is secondary mirror, and 4 is three mirrors, and 5 is TDI CCD coupling coding templet, and 6 is optics TDI ccd detector.The incident ray of optical system observation scene enters optical system primary mirror 2 by rotating speculum 1, after primary mirror 2 reflections, arrive secondary mirror 3, arrive three mirrors 4 through secondary mirror 3 reflections again, be close to TDI CCD aligning and place a TDI CCD coupling coding templet 5 designing, make light be coupled after coding templet 5 is modulated and reflect and arrive optics TDI ccd detector arrays 6 through three mirrors 4 via TDI CCD.
With reference to accompanying drawing 3, concrete steps of the present invention are as follows:
Step 1: optics TDI ccd detector focal plane array is set.
With reference to accompanying drawing 4, the linear array TDI CCD that is 16 by 4 integration progression order is spliced into a focal plane array, the optics TDI ccd detector focal plane array that obtains setting;
Step 2: TDI CCD coupling coding templet is set.
In the template of the working region of spatial light modulator, mark off successively the positive direction region equating with optics TDI ccd detector horizontal and vertical direction pixel number by horizontal and vertical direction, this square area is identical with the single pixel dimension of optics TDI ccd detector.
In optics TDI ccd detector linear array direction, square area is divided into 4 wide contour small rectangles from top to bottom, the logical light of Part I of the coding templet that first 16 grades of all pixels of TDI CCD linear array are corresponding, the logical light of Part II of the coding templet that second 16 grades all pixels of TDI CCD linear array are corresponding, the 3rd 16 grades coding templet Part III corresponding to all pixels of TDI CCD linear array pass through, the logical light of Part IV of the coding templet that the 4th 16 grades all pixels of TDI CCD linear array are corresponding, the TDI CCD that obtains the setting coding templet that is coupled.
In embodiments of the invention, divide 4 wide contour small rectangle area sizes are 1/4 of the single pixel dimension of optical detector, by place TDI CCD coupling coding templet before pixel, pixel subregion is blocked, make single pixel detecting to imaging region be less than a pixel dimension, thereby obtain sub-pixel other information.
Step 3: the low resolution coded image array that obtains four width Same Scene.
TDI CCD coupling coding templet is placed on before optics TDI ccd detector, is close to the focal plane array of optics TDI ccd detector, all pixels that all square area on TDI CCD coupling coding templet list with focal plane array are aimed at one by one;
Utilize encoding measurement method, obtain successively four width low resolution optical images of Same Scene;
The concrete steps of the described super-resolution optical imaging method based on linear array TDI CCD focal plane coding are as follows:
The first step, press the shutter of high-resolution imaging system, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of TDI CCD coupling coding templet transmission region, stop other parts, list record the first width low resolution optical coded image at focal plane array;
In embodiments of the invention, only allow and pass through through the light of the Part I transmission region of first 16 grades of each pixel coding modules of TDI CCD linear array, list record the first width low resolution optical coded image at focal plane array.
Second step, after the first width low resolution optical coded image has recorded, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of TDI CCD coupling coding templet transmission region, stop other parts, list record the second width low resolution optical coded image at focal plane array;
In embodiments of the invention, only allow and pass through through the light of the Part II transmission region of second the 16 grades each pixel coding modules of TDI CCD linear array, list record the second width low resolution optical coded image at focal plane array.
The 3rd step, after the second width low resolution optical coded image has recorded, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of TDI CCD coupling coding templet transmission region, stop other parts, list record the 3rd width low resolution optical coded image at focal plane array;
In embodiments of the invention, only allow and pass through through the light of the Part III transmission region of the 3rd the 16 grades each pixel coding modules of TDI CCD linear array, list record the first width low resolution optical coded image at focal plane array.
The 4th step, after the 3rd width low resolution optical coded image has recorded, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of TDI CCD coupling coding templet transmission region, stop other parts, list record the 4th width low resolution optical coded image at focal plane array;
In embodiments of the invention, only allow and pass through through the light of the Part IV transmission region of the 4th the 16 grades each pixel coding modules of TDI CCD linear array, list record the first width low resolution optical coded image at focal plane array.
Step 4: image preliminary treatment:
By median filter, the four width low resolution optical coded images that obtain are carried out to preliminary treatment, filtering noise wherein, the low resolution optical coded image of acquisition four width filtering noises;
Step 5: super-resolution image reconstruction:
Create target image matrix, the line number of target image matrix equals the line number of the low resolution optical coded image of 4 times, and target image matrix column number equals the columns of low resolution optical coded image;
Adopt pixel rearrangement method, the optical encoding image of four width filtering noises is carried out to Image Reconstruction, obtain super-resolution optical imagery.
The concrete steps of described pixel rearrangement method are as follows:
The first step, by the pixel value of capable the low resolution optical coded image 4i-3 of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i-3, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns.
Second step, by the pixel value of capable the low resolution optical coded image 4i-2 of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i-2, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns.
The 3rd step, by the pixel value of capable the low resolution optical coded image 4i-1 of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i-1, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns.
The 4th step, by the pixel value of capable the low resolution optical coded image 4i of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns.
With reference to accompanying drawing 3, to TDI CCD of the present invention focal plane coding templet, and the performance boost obtaining with respect to traditional formation method is described below more intuitively.The linear array TDI CCD that is 16 by 4 integration progression order is spliced into a focal plane array, the TDI CCD coupling coding templet of design is divided into from top to bottom 4 parts by each pixel in cross rail method, the logical light of Part I of the each pixel of first TDI CCD linear array, the logical light of Part II of second each pixel of TDI CCD linear array, the logical light of Part III of the 3rd the each pixel of TDI CCD, the logical light of the Part IV of the 4th the 16 grades each pixels of TDI CCD, is equivalent to integration progression the time of integration and is 64 the required time of integration of linear array TDI CCD.After the required detection time of 64 grades of TDI CCD, optics TDI ccd detector will obtain four width low-resolution images of Same Scene successively, utilizes image to process to merge the highest detection resolution that makes of four width low-resolution images to improve 4 times.
With reference to accompanying drawing 5, to the single pixel pixel of detector of the present invention rearrangement method, be described below more visual in imagely.The pixel value order of the low resolution optical image that on detector, single pixel obtains is arranged in target image matrix, obtains the reconstructed image matrix of single pixel.Represent at Fig. 5 (a) image that the single pixel coding of first TDI CCD focal plane array obtains, record the focal plane pixel information in region topmost, represent at Fig. 5 (b) image that second single pixel coding of TDI CCD focal plane array obtains, record the information of focal plane pixel second area, represent at Fig. 5 (c) image that the 3rd the single pixel coding of TDI CCD focal plane array obtains, record the information in focal plane pixel the 3rd region, represent at Fig. 5 (d) image that the 4th the single pixel coding of TDI CCD focal plane array obtains, represent the information in the bottom region of focal plane pixel, it is the super-resolution image reconstruction matrix of the super-resolution reconstruction acquisition that single pixel is corresponding at Fig. 5 (e), the image reconstructing method that focal plane array lists all pixels is identical.
Claims (7)
1. the super-resolution optical imaging device based on TDI CCD focal plane coding, is characterized in that, described device comprises be coupled coding templet, optics TDI ccd detector and Image Reconstruction module from axle three reflecting optical systems, TDI CCD;
Described from axle three reflecting optical systems, for the incident ray of control observation scene, and make light arrive described TDI CCD coupling coding templet to carry out spatial domain modulation;
Described TDI CCD coupling coding templet, for carrying out spatial domain modulation to entering from the light of axle three reflecting optical systems, and makes the described optics TDI ccd detector array of light arrival carry out low resolution imaging;
Described optics TDI ccd detector, for being converted into the signal of telecommunication by the light signal after TDI CCD coupling coding templet spatial domain modulation;
Described Image Reconstruction module, for being transformed to the signal of telecommunication obtaining, described optics TDI ccd detector carries out preliminary treatment, and adopt pixel rearrangement method, and the low resolution optical coded image of filtering noise is carried out to Image Reconstruction, finally obtain super-resolution optical imagery.
2. the super-resolution optical imaging device based on linear array TDI CCD focal plane coding according to claim 1, it is characterized in that, described optical system adopts and instead designs from axle three, the incident ray of described optical system observation scene enters optical system primary mirror by rotating speculum, after primary mirror reflection, arrive secondary mirror, arrive three mirrors through secondary mirror reflection again, reach three mirrors through secondary mirror reflection again, be close to TDI CCD and aim at a coding templet designing of placement, after making light via the modulation of TDI CCD coupling coding templet, arrive optics TDI ccd detector array through three mirror reflections, finally obtain super-resolution optical imagery by Image Reconstruction.
3. the super-resolution optical imaging device based on linear array TDI CCD focal plane coding according to claim 1, is characterized in that, does not describedly have aberration and second order spectrum from axle three reflecting optical systems, is applicable to the imaging of wide spectrum scope.
4. the super-resolution optical imaging device based on linear array TDI CCD focal plane coding according to claim 1, it is characterized in that, described from axle three reflecting optical systems both can utilize refluxing reflection mirror folded optical path shorten volume, easily realize light-weight design, can obtain long-focus, large visual field, wide-aperture combination with aspherical mirror again, meeting spatial is applied the requirement to Optical System Design.
5. the super-resolution optical imaging method based on TDI CCD focal plane coding, is characterized in that, comprises the steps:
(1) optics TDI ccd detector focal plane array is set:
The linear array TDI CCD that is 16 by 4 integration progression order is spliced into a focal plane array, the optics TDI ccd detector focal plane array that obtains setting;
(2) TDI CCD coupling coding templet is set:
2a) in the template of the working region of spatial light modulator, mark off successively the positive direction region equating with optics TDI ccd detector horizontal and vertical direction pixel number by horizontal and vertical direction, this square area is identical with the single pixel dimension of optics TDI ccd detector;
2b) square area is divided into from top to bottom to 4 wide contour small rectangles in optical detector linear array direction, the logical light of Part I of the coding templet that first 16 grades of all pixels of TDI CCD linear array are corresponding, the logical light of Part II of the coding templet that second 16 grades all pixels of TDI CCD linear array are corresponding, the 3rd the 16 grades logical light of coding templet Part III that all pixels of TDI CCD linear array are corresponding, the logical light of Part IV of the coding templet that the 4th 16 grades all pixels of TDI CCD linear array are corresponding, the TDI CCD that obtains the setting coding templet that is coupled;
(3) obtain the low resolution coded image array of four width Same Scene:
3a) by step 2b) in the TDI CCD coupling coding templet that obtains be placed on before optics TDI ccd detector, be close to the focal plane array of optics TDI ccd detector, all pixels that all square area on TDI CCD coupling coding templet list with focal plane array are aimed at one by one;
3b) utilize encoding measurement method, obtain successively four width low resolution optical images of Same Scene;
(4) image preliminary treatment:
By median filter, the four width low resolution optical coded images that obtain are carried out to preliminary treatment, filtering noise wherein, the low resolution optical coded image of acquisition four width filtering noises;
(5) super-resolution image reconstruction:
5a) create target image matrix, the line number of target image matrix equals the line number of the low resolution optical coded image of 4 times, and target image matrix column number equals the columns of low resolution optical coded image;
5b) adopt pixel rearrangement method, the optical encoding image of four width filtering noises is carried out to Image Reconstruction, obtain super-resolution optical imagery.
6. the super-resolution optical imaging method based on linear array TDI CCD focal plane coding according to claim 5, is characterized in that step 3b) described in the concrete steps of encoding measurement method as follows:
The first step, press the shutter of high-resolution imaging system, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of the Part I transmission region of first 16 grades of each pixel coding modules of TDI CCD linear array, stop other parts, list record the first width low resolution optical coded image at focal plane array;
Second step, after the first width low resolution optical coded image has recorded, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of the Part II transmission region of second the 16 grades each pixel coding modules of TDI CCD linear array, stop other parts, list record the second width low resolution optical coded image at focal plane array;
The 3rd step, after the second width low resolution optical coded image has recorded, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of the Part III transmission region of the 3rd the 16 grades each pixel coding modules of TDI CCD linear array, stop other parts, list record the 3rd width low resolution optical coded image at focal plane array;
The 4th step, after the 3rd width low resolution optical coded image has recorded, TDI CCD coupling coding module carries out spatial domain modulation to the light beam that enters push-scanning image system, only allow and pass through through the light of the Part IV transmission region of the 4th the 16 grades each pixel coding modules of TDI CCD linear array, stop other parts, list record the 4th width low resolution optical coded image at focal plane array.
7. the super-resolution optical imaging method based on linear array TDI CCD focal plane coding according to claim 5, is characterized in that step 5b) described in the concrete steps of pixel rearrangement method as follows:
The first step, by the pixel value of capable the low resolution optical coded image 4i-3 of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i-3, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns;
Second step, by the pixel value of capable the low resolution optical coded image 4i-2 of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i-2, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns;
The 3rd step, by the pixel value of capable the low resolution optical coded image 4i-1 of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i-1, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns;
The 4th step, by the pixel value of capable the low resolution optical coded image 4i of the first width filtering noise j row, assignment is to the element of the capable j row of target image matrix 4i, the value of i is 1 positive integer to low resolution optical coded image line number, and the span of j is 1 positive integer to low resolution optical coded image columns.
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| CN104394309A (en) * | 2014-12-16 | 2015-03-04 | 中国科学院国家天文台 | Super-resolution imaging system and method with stable images |
| CN106791405A (en) * | 2016-12-26 | 2017-05-31 | 首都师范大学 | A kind of method and system for obtaining Displacement sequence image |
| CN106791405B (en) * | 2016-12-26 | 2019-05-21 | 首都师范大学 | A kind of method and system obtaining Displacement sequence image |
| CN107621691A (en) * | 2017-09-30 | 2018-01-23 | 中国科学院长春光学精密机械与物理研究所 | A kind of off-axis total-reflection type projection objective lens optical system |
| CN108683844A (en) * | 2018-05-04 | 2018-10-19 | 清华大学 | The implementation method and device of TDI push-scanning images based on DMD |
| CN111405183A (en) * | 2020-03-27 | 2020-07-10 | 西安理工大学 | System and method for improving cell resolution integrated in image sensor |
| CN111405183B (en) * | 2020-03-27 | 2021-11-16 | 西安理工大学 | System and method for improving cell resolution integrated in image sensor |
| CN111524489A (en) * | 2020-04-23 | 2020-08-11 | 中国科学院上海技术物理研究所 | Ultrahigh frame frequency simulation method based on composite coding |
| CN111524489B (en) * | 2020-04-23 | 2022-08-19 | 中国科学院上海技术物理研究所 | Ultrahigh frame frequency simulation method based on composite coding |
| WO2022120595A1 (en) * | 2020-12-08 | 2022-06-16 | 深圳华大智造科技股份有限公司 | Super-resolution measurement system and super-resolution measurement method |
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