Abstract

Hybrid opto-digital joint transform correlator (HODJTC) is effective for image motion measurement, but it is different from the traditional joint transform correlator because it only has one optical transform and the joint power spectrum is directly input into a digital processing unit to compute the image shift. The local cross-correlation image can be directly obtained by adopting a local Fourier transform operator. After the pixel-level location of cross-correlation peak is initially obtained, the up-sampling technique is introduced to relocate the peak in even higher accuracy. With signal-to-noise ratio ? 20 dB, up-sampling factor k ? 10 and the maximum image shift ? 60 pixels, the root-mean-square error of motion measurement accuracy can be controlled below 0.05 pixels.

© 2010 Chinese Optics Letters

Real-time image stabilization for arbitrary motion blurred image based on opto-electronic hybrid joint transform correlator

Yixian Qian, Yong Li, Jie Shao, and Hua Miao
Opt. Express 19(11) 10762-10768 (2011)

Performance Improvement of a Phase-Shifting Joint Transform Correlator by use of Phase-Iterative Techniques

Hong-Jun Su and Mohammad A. Karim
Appl. Opt. 37(17) 3639-3642 (1998)

Image rotation and translation measurement based on double phase-encoded joint transform correlator

Peng Ge, Qi Li, Huajun Feng, and Zhihai Xu
Appl. Opt. 50(27) 5235-5242 (2011)

Binary joint transform correlator based on differential processing of the joint transform power spectrum

Sheng Zhong, Jiuxing Jiang, Shutian Liu, and Chunfei Li
Appl. Opt. 36(8) 1776-1780 (1997)

Adaptive binary joint transform correlator for image recognition

Feng Lei, Masahide Iton, and Toyohiko Yatagai
Appl. Opt. 41(35) 7416-7421 (2002)