| 用联合变换相关器实现灰阶图像绝对差度量光学匹配 |
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| 引用本文： | 成罡,金国藩,邬敏贤,何庆生,刘海松,严瑛白.用联合变换相关器实现灰阶图像绝对差度量光学匹配[J].光学学报,1999,19(9):236-1243. |
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| 作者姓名： | 成罡 金国藩 邬敏贤 何庆生 刘海松 严瑛白 |
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| 作者单位： | 清华大学精密测试技术及仪器国家重点实验室,北京,100084 |
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| 基金项目： | 国家自然科学基金，国家科委 863 高科技项目，曹光彪高技术发展基金 |
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| 摘 要： | 将绝对差度量（ＡＤＭ）引入联合变换相关器（ＪＴＣ），实现了灰阶图像光学匹配的计算机模拟实验，利用循环编码方法，通过联合变换相关器一步绝对差度量，相关后的图像通过取高阈值的分割方法来实现对目标的准确判断，针对高斯噪声干扰情况，分析了阈值选择问题，提高了灰阶目标识别抵抗器材怕畸变干扰的能力。
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| 关 键 词： | 绝对差度量 联合变换相关器 循环编码方法 光学模式识别 灰阶图像 |
| 收稿时间： | 1998/1/12 |
Joint Transform Correlator for Optical Gray-Scale Image Matching |
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| Cheng Gang,Jin Guofan,Wu Minxian,He Qingsheng,Liu Haisong,Yan Yingbai.Joint Transform Correlator for Optical Gray-Scale Image Matching[J].Acta Optica Sinica,1999,19(9):236-1243. |
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| Authors: | Cheng Gang Jin Guofan Wu Minxian He Qingsheng Liu Haisong Yan Yingbai |
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| Abstract: | Absolute difference measurement (ADM) is introduced into joint transform correlator (JTC) for optical gray scale image matching. Using a novel cycle encoding method, ADM is performed on a JTC in one step. With a high level thresholding value, the correct justification can be achieved from the correlated resultant image. The value of thresholding should be changed according to the different situation of noise disturbing so that it can improve the distortion invariant ability of the JTC system. The simulation results are given. |
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| Keywords: | absolute difference measurement joint transform correlator cycle encoding method optical pattern recognition gray scale image |
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