CN107300827A - Low noise without lens imaging method - Google Patents
Low noise without lens imaging method Download PDFInfo
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- CN107300827A CN107300827A CN201710542672.9A CN201710542672A CN107300827A CN 107300827 A CN107300827 A CN 107300827A CN 201710542672 A CN201710542672 A CN 201710542672A CN 107300827 A CN107300827 A CN 107300827A
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- pattern
- printing opacity
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B41/00—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F3/00—Optical logic elements; Optical bistable devices
Abstract
The invention discloses a kind of low noise without lens imaging method, including：After detector is powered, record target is sent and the light after encoded template, and the pattern of output reconstructs the image of target after the relevant treatment with coding pattern；Detector significant surface battle array size is more than the half of coding templet pattern dimension；After coding templet is a kind of metal-coated membrane on the glass substrate, using lithographic technique etch come a kind of coding pattern, coding pattern is made up of multiple energy printing opacities and lighttight two kinds of an equal amount of square units, the distribution of square unit is represented by the matrix of the apposition generation of two pseudo-random vectors being made up of 0 and 1,0 and 1 in matrix is unable to printing opacity in presentation code pattern and can printing opacity respectively, it is impossible to the square element number of printing opacity be greater than can printing opacity square element number.The program be based on specific coding templet, can solve based on URA templates without sensitive question of the lens camera to noise, so as to improve the signal to noise ratio of reconstructed image.
Description
Technical field
The present invention relates to without lens imaging technical field, more particularly to a kind of low noise without lens imaging method.
Background technology
It is the technology that a kind of utilization certain moduli plate realizes indirect imaging instead of conventional lenses without lens imaging.Its principle
Be the light sent using luminous point by template after, on the detector be projected out corresponding hatching pattern, hatching pattern record
The position of luminous point and luminous intensity information, and position is different, and pattern is also different.It is uncorrelated between different patterns
's.Detector, which is recorded, is superimposed later pattern, and the intensity of diverse location luminous point can be solved by correlation operation, from
And obtain corresponding image.
Current template has diversified forms, including Fresnel zone plate, URA, random binary coding templet etc..Wherein URA is
A kind of good form of performance comparision, because the area that it has half is printing opacity, and its point spread function and impulse function are non-
Very close to making it a kind of highly desirable scheme.
As shown in figure 1, to realize the schematic diagram without lens imaging using URA templates.The area of its half is printing opacity, tool
There is higher luminous flux, it is still, higher to the sensitiveness of noise without lens camera based on URA, final reconstruct image will be influenceed
The signal to noise ratio of picture.
The content of the invention
It is an object of the invention to provide a kind of low noise without lens imaging method, it can effectively reduce and be currently based on
URA coding templets are without sensitiveness of the lens camera to noise.
The purpose of the present invention is achieved through the following technical solutions：
A kind of low noise without lens imaging method, including：
After detector is powered, record target is sent and the light after encoded template, and the pattern of output passes through and coding
The image of target is reconstructed after the relevant treatment of pattern；
Wherein, the detector significant surface battle array size is more than the half of coding templet pattern dimension；
After the coding templet is a kind of metal-coated membrane on the glass substrate, a kind of volume come is etched using lithographic technique
Code pattern, coding pattern is made up of multiple energy printing opacities and lighttight two kinds of an equal amount of square units, square unit
It is distributed and is represented by the matrix of the apposition generation of two pseudo-random vectors being made up of 0 and 1,0 and 1 difference presentation code in matrix
Printing opacity and energy printing opacity are unable in pattern, wherein, it is impossible to the square element number of printing opacity is more than the square element number of energy printing opacity.
Detector is area array CCD or face battle array CMOS, the unit with sensitization function comprising multiple two-dimensional arrangements.
The square unit accounting of energy printing opacity is about 0.25.
As seen from the above technical solution provided by the invention, based on specific coding templet, it can solve to be based on URA
Template without sensitive question of the lens camera to noise, so as to improve the signal to noise ratio of reconstructed image.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, being used required in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 realizes the schematic diagram without lens imaging for what background of invention was provided based on URA templates；
Fig. 2 is a kind of schematic diagram without lens imaging method of low noise provided in an embodiment of the present invention.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
The embodiment of invention, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to protection scope of the present invention.
Fig. 2 is a kind of schematic diagram without lens imaging method of low noise provided in an embodiment of the present invention.As shown in Fig. 2
After detector is powered, record target is sent and the light after encoded template, and the pattern of output is by the phase with coding pattern
The image of target is reconstructed after the processing of pass.
The key component of the embodiment of the present invention is coding templet and detector；It is specific as follows：
1st, detector can be for area array CCD or face battle array CMOS, the list with sensitization function comprising multiple two-dimensional arrangements
Member, detector significant surface battle array (area of photosensitive unit composition) size is more than the half of coding templet pattern dimension.
2nd, after coding templet is a kind of metal-coated membrane on the glass substrate, a kind of coding come is etched using lithographic technique
Pattern, coding pattern is made up of multiple energy printing opacities and lighttight two kinds of an equal amount of square units, point of square unit
Cloth represents that presentation code figure is distinguished in 0 and 1 in matrix by the matrix of the apposition generation of two pseudo-random vectors being made up of 0 and 1
Printing opacity and energy printing opacity are unable in case, wherein, it is impossible to the square element number of printing opacity is more than the square element number of energy printing opacity.Example
Property, the square unit accounting of energy printing opacity is about 0.25.
Coding templet is placed in parallel immediately ahead of detector, it is ensured that both centers are tried one's best alignment, the size of square unit
Set as needed with the distance of coding templet and detector.By certain mode by the relative position of coding templet and detector
It is fixed.
In the such scheme of the embodiment of the present invention, based on specific coding templet, it can solve based on URA templates without saturating
Mirror camera is to the sensitive question of noise, so as to improve the signal to noise ratio of reconstructed image.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (3)
1. a kind of low noise without lens imaging method, it is characterised in that including：
After detector is powered, record target is sent and the light after encoded template, and the pattern of output passes through and coding pattern
Relevant treatment after reconstruct the image of target；
Wherein, the detector significant surface battle array size is more than the half of coding templet pattern dimension；
After the coding templet is a kind of metal-coated membrane on the glass substrate, using lithographic technique etch come a kind of code pattern
Case, coding pattern is made up of multiple energy printing opacities and lighttight two kinds of an equal amount of square units, the distribution of square unit
Represented by the matrix of the apposition generation of two pseudo-random vectors being made up of 0 and 1,0 and 1 difference presentation code pattern in matrix
In be unable to printing opacity and can printing opacity, wherein, it is impossible to the square element number of printing opacity be more than can printing opacity square element number.
2. a kind of low noise according to claim 1 without lens imaging method, it is characterised in that detector be face battle array
CCD or face battle array CMOS, the unit with sensitization function comprising multiple two-dimensional arrangements.
3. a kind of low noise according to claim 1 without lens imaging method, it is characterised in that can printing opacity square list
First accounting is about 0.25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542672.9A CN107300827B (en) | 2017-07-05 | 2017-07-05 | Low noise lensless imaging method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542672.9A CN107300827B (en) | 2017-07-05 | 2017-07-05 | Low noise lensless imaging method |
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| Publication Number | Publication Date |
|---|---|
| CN107300827A true CN107300827A (en) | 2017-10-27 |
| CN107300827B CN107300827B (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710542672.9A Active CN107300827B (en) | 2017-07-05 | 2017-07-05 | Low noise lensless imaging method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019143250A1 (en) | 2018-01-22 | 2019-07-25 | Fugro N.V. | Surveying instrument for and surveying method of surveying reference points |
| CN110277057A (en) * | 2019-06-28 | 2019-09-24 | 京东方科技集团股份有限公司 | A kind of display panel, signal processing method and display device |
| CN112802135A (en) * | 2021-01-15 | 2021-05-14 | 安徽大学 | Ultrathin lens-free separable compression imaging system and calibration and reconstruction method thereof |
Citations (3)
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|---|---|---|---|---|
| US20090020714A1 (en) * | 2006-02-06 | 2009-01-22 | Qinetiq Limited | Imaging system |
| US20110085051A1 (en) * | 2009-10-09 | 2011-04-14 | University Of Rochester | Optical element, device, method, and applications |
| WO2016123529A1 (en) * | 2015-01-29 | 2016-08-04 | William Marsh Rice University | Lensless imaging system using an image sensor with one or more attenuating layers |
-
2017
- 2017-07-05 CN CN201710542672.9A patent/CN107300827B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090020714A1 (en) * | 2006-02-06 | 2009-01-22 | Qinetiq Limited | Imaging system |
| US20110085051A1 (en) * | 2009-10-09 | 2011-04-14 | University Of Rochester | Optical element, device, method, and applications |
| WO2016123529A1 (en) * | 2015-01-29 | 2016-08-04 | William Marsh Rice University | Lensless imaging system using an image sensor with one or more attenuating layers |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019143250A1 (en) | 2018-01-22 | 2019-07-25 | Fugro N.V. | Surveying instrument for and surveying method of surveying reference points |
| CN110277057A (en) * | 2019-06-28 | 2019-09-24 | 京东方科技集团股份有限公司 | A kind of display panel, signal processing method and display device |
| CN110277057B (en) * | 2019-06-28 | 2021-01-26 | 京东方科技集团股份有限公司 | Display panel, signal processing method and display device |
| CN112802135A (en) * | 2021-01-15 | 2021-05-14 | 安徽大学 | Ultrathin lens-free separable compression imaging system and calibration and reconstruction method thereof |
| CN112802135B (en) * | 2021-01-15 | 2022-12-02 | 安徽大学 | Ultrathin lens-free separable compression imaging system and calibration and reconstruction method thereof |
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| Publication number | Publication date |
|---|---|
| CN107300827B (en) | 2020-05-05 |
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