Image Displacement Detection under Low Illumination using Joint Transform Correlator with Wavelet Denoising

摘要：

Since joint transform correlator (JTC) cannot directly detect the displacement between reference and target images without adequate exposure, an image displacement detection method using JTC based on log-Gabor wavelet denoising is proposed. The method uses a log-Gabor wavelet transform to denoise the reference and the target image obtained in the condition lack of enough exposure, preserving the phase information of them. Results show that the method can successfully accomplish the motion detection, RMSE of displacement measurement using JTC with wavelet denoising could be within 0.3 pixels under 1/80 of normal exposure. The method improved the detection ability of JTC in the condition of low illumination and low contrast, and has great application prospect under these circumstances.

关键词： Motion detection Wavelet transform Joint transform correlator Video signal processing Lack of exposure

作者: LI Qi Ge Peng Feng Hua-jun Xu Zhi-hai

作者单位: State key lab of modern optical instruments，Zhejiang University，Hangzhou，China，310027

会议类型: 国际会议

会议名称: 4th International Conference on Measuring Technology and Mechatronics Automation(第四届检测技术与机电自动化国际会议 ICMTMA 2012)

会议地点: 三亚

会议语种:英文

页码: 602-606

在线出版日期: 2012-01-06（万方平台首次上网日期，不代表论文的发表时间）