Method for improving precision of volume holographic correlator by image pretreatment |
Title： |
| Method for improving precision of volume holographic correlator by image pretreatment |
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Application Number： |
200710063509 |
Application Date： |
2007/02/02 |
Announcement Date： |
2007/08/08 |
Pub. Date： |
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Publication Number： |
101013577 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G11B 7/0065G03H 1/26 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Cao Liangcai, Ni Kai, Qu Zongyao, Su Ping, Tan Qiaofeng, He Qingsheng, Jin Guofan |
Key Words： |
precision, volume holographic correlator, image pretreatment |
Abstract： |
It is a method to improve the holographic accuracy through image preprocessing, belonging to the optical information processing. Select a staggered block rules, numbering rules and rearrangement rules In accordance with the established rules, each piece of the P-Q format image is divided into J block in accordance with the numbering rules of the images, each sub-block J is numbered in accordance with the rearrangement rules, the a (n) sub-block is placed in the location of block numbered n, finally to form N new images store into related input an real-time image block, number, rearrangement, store into related read results repeat steps (6) to (11) to get the next input real-time image and the results of image until no new real-time image is inputted complete the increase of holographic image associated accuracy through image preprocessing. In experiments that compare the original images and the results of staggered graphs, it is found that the method in the invention can improve holographic output accuracy. |
Claim： |
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Priority： |
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PCT： |
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