CN101738381A - Method for manufacturing single-pixel terahertz imaging template - Google Patents
Method for manufacturing single-pixel terahertz imaging template Download PDFInfo
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- CN101738381A CN101738381A CN 200910219489 CN200910219489A CN101738381A CN 101738381 A CN101738381 A CN 101738381A CN 200910219489 CN200910219489 CN 200910219489 CN 200910219489 A CN200910219489 A CN 200910219489A CN 101738381 A CN101738381 A CN 101738381A
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Abstract
The invention relates to a method for manufacturing a single-pixel terahertz imaging template, which is characterized by comprising the following steps of: generating a random matrix which only includes elements 0 and 1 according to rows m and columns n of grids of a random template; setting the grid to which the element 0 corresponds as a light-transmission grid and setting the grid to which the element 1 corresponds as a light-proof grid on a strip-shaped flexible PCB random template according to the random matrix; integrally connecting the strip-shaped flexible PCB random templates end to end to form a square double-layer template to obtain the single-pixel terahertz imaging template at a random light transmission position of the square double-layer template determined by the light transmission property of the front layer of grid and the back layer of grid corresponding to each other. In the method for manufacturing the single-pixel terahertz imaging template, a rectangular template generated by using the method is utilized to replace a plurality of square templates, and the templates can be replaced by using an automatic template-exchanging mechanism, thereby the cost of the terahertz imaging can be reduced, and the efficiency of the terahertz imaging can be improved.
Description
Technical field
The present invention relates to a kind of method for making of single-pixel terahertz imaging template, belong to the theoretical application of Compressive Sensing (being called for short CS).
Background technology
Terahertz imaging template is mainly used in terahertz imaging.In the process of Terahertz complete imaging each time, need launch repeatedly terahertz pulse.Every emission pulsatile once ripple, imaging template need be changed once.
The terahertz imaging template that existing method generates is one one a square template, as shown in Figure 1.
The random mask that existing method generates has following deficiency:
(1) the every emission pulsatile once in terahertz pulse source will be changed Polaroid template.Complete each time imaging needs hundreds of piece template, does the cost that obviously can improve terahertz imaging like this.
(2) owing to need monoblock to change at every turn, consuming time longer, terahertz imaging efficient is obviously lower.
Summary of the invention
The technical matters that solves
For fear of the deficiencies in the prior art part, the present invention proposes a kind of method for making of single-pixel terahertz imaging template, generates the square banded flexible random mask of a block length, can substitute the square random mask of polylith during imaging fully and use.
Technical scheme
A kind of method for making of single-pixel terahertz imaging template is characterized in that step is as follows:
Step 1:, determine the line number m and the columns n of the grid of random mask according to the specific requirement of terahertz imaging size and precision;
Step 2: utilize mathematical tool matlab 7.0 to generate the stochastic matrix that only contains 0,1 element of a m * n dimension;
Step 3: the stochastic matrix that only contains 0,1 element that obtains according to step 2, on a strip-shaped flexible PCB random mask, and be made as the printing opacity grid in the grid of 0 element correspondence position, be made as light tight grid in the grid with 1 element correspondence position;
Step 4: the strip-shaped flexible PCB random mask that step 3 is obtained is connected as a single entity from beginning to end and forms square double template, obtains being determined by the light transmission of the two-layer correspondence position grid in front and back the single-pixel terahertz imaging template of the position of printing opacity at random of square double template.
Described m/n is 3/1～4/1.
Beneficial effect
The method for making of a kind of single-pixel terahertz imaging template that the present invention proposes, the rectangle template of utilizing this method to generate can replace polylith square template to use.And, can conveniently utilize automatic die changing mechanism to realize the replacing of template, can reduce the cost of terahertz imaging first, second improved the efficient of terahertz imaging.
Description of drawings
Fig. 1: the terahertz imaging template that existing method generates
Fig. 2: the terahertz imaging template that the inventive method generates
Embodiment
Now in conjunction with the embodiments, accompanying drawing is further described the present invention:
The material of selecting a strip-shaped flexible PCB in the present embodiment for use is as random mask, and concrete making step is as follows:
(1), determines the line number m and the columns n of the grid of random mask according to the specific requirement of terahertz imaging size and precision.In this example, m=800, n=256.
(2) utilize matlab 7.0 to generate one 800 * 256 the stochastic matrix that only contains 0,1 element.
(3) by strip-shaped flexible PCB random mask of the corresponding generation of this stochastic matrix.Random mask is made up of 800 row and 256 row printing opacities and lighttight grid, " 0 " element of stochastic matrix the random mask correspondence position grid in " printing opacity " expression, " 1 " element of stochastic matrix the random mask correspondence position grid in " light tight " expression.As shown in Figure 2.
(4) this random mask is connected as a single entity from beginning to end, generates a double-deck random mask that certain intervals is arranged.
(5) in above-mentioned double-deck random mask, appoint get continuous one section form double-deck n capable * n is listed as square template, all can be used as terahertz pulse imaging random mask and use.
(6) above-mentioned square double template, its printing opacity and lighttight part are determined jointly by the light transmission of the two-layer correspondence position grid in front and back.The equal printing opacity of front and back grid that has only correspondence position, the correspondence position of double-deck square template could printing opacity.Otherwise corresponding position just can not printing opacity.
Claims (2)
1. the method for making of a single-pixel terahertz imaging template is characterized in that step is as follows:
Step 1:, determine the line number m and the columns n of the grid of random mask according to the specific requirement of terahertz imaging size and precision;
Step 2: utilize mathematical tool matlab 7.0 to generate the stochastic matrix that only contains 0,1 element of a m * n dimension;
Step 3: the stochastic matrix that only contains 0,1 element that obtains according to step 2, on a strip-shaped flexible PCB random mask, and be made as the printing opacity grid in the grid of 0 element correspondence position, and be made as light tight grid in the grid of 1 element correspondence position;
Step 4: the strip-shaped flexible PCB random mask that step 3 is obtained is connected as a single entity from beginning to end and forms square double template, obtains being determined by the light transmission of the two-layer correspondence position grid in front and back the single-pixel terahertz imaging template of the position of printing opacity at random of square double template.
2. the method for making of single-pixel terahertz imaging template according to claim 1, it is characterized in that: described m/n is 3/1～4/1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910219489 CN101738381B (en) | 2009-12-14 | 2009-12-14 | Method for manufacturing single-pixel terahertz imaging template |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910219489 CN101738381B (en) | 2009-12-14 | 2009-12-14 | Method for manufacturing single-pixel terahertz imaging template |
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| Publication Number | Publication Date |
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| CN101738381A true CN101738381A (en) | 2010-06-16 |
| CN101738381B CN101738381B (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910219489 Expired - Fee Related CN101738381B (en) | 2009-12-14 | 2009-12-14 | Method for manufacturing single-pixel terahertz imaging template |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764712A (en) * | 2015-04-29 | 2015-07-08 | 浙江工业大学 | Method for detecting quality of inner wall of via hole of PCB |
| US10928252B2 (en) | 2016-02-11 | 2021-02-23 | Carrier Corporation | Compressive sensing detector |
-
2009
- 2009-12-14 CN CN 200910219489 patent/CN101738381B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764712A (en) * | 2015-04-29 | 2015-07-08 | 浙江工业大学 | Method for detecting quality of inner wall of via hole of PCB |
| CN104764712B (en) * | 2015-04-29 | 2017-08-25 | 浙江工业大学 | A kind of detection method of PCB vias inwall quality |
| US10928252B2 (en) | 2016-02-11 | 2021-02-23 | Carrier Corporation | Compressive sensing detector |
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| Publication number | Publication date |
|---|---|
| CN101738381B (en) | 2011-08-17 |
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Application publication date: 20100616 Assignee: NANCHANG HUAMENGDA AVIATION TECHNOLOGY DEVELOPMENT CO., LTD. Assignor: Northwestern Polytechnical University Contract record no.: 2015360000103 Denomination of invention: Method for manufacturing single-pixel terahertz imaging template Granted publication date: 20110817 License type: Exclusive License Record date: 20150624 |
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