The research of multi-frame target recognition based on laser active imaging

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	The research of multi-frame target recognition based on laser active imaging
	Wang C.-J. ; Sun T. ; Wang T.-F. ; Chen J.
	2013
会议名称	5th International Symposium on Photoelectronic Detection and Imaging, ISPDI 2013, June 25, 2013 - June 27, 2013
会议日期	June 25, 2013 - June 27, 2013
会议地点	Beijing, China
英文摘要	Laser active imaging is fit to conditions such as no difference in temperature between target and background, pitch-black night, bad visibility. Also it can be used to detect a faint target in long range or small target in deep space, which has advantage of high definition and good contrast. In one word, it is immune to environment. However, due to the affect of long distance, limited laser energy and atmospheric backscatter, it is impossible to illuminate the whole scene at the same time. It means that the target in every single frame is unevenly or partly illuminated, which make the recognition more difficult. At the same time the speckle noise which is common in laser active imaging blurs the images. In this paper we do some research on laser active imaging and propose a new target recognition method based on multi-frame images. Firstly, multi pulses of laser is used to obtain sub-images for different parts of scene. A denoising method combined homomorphic filter with wavelet domain SURE is used to suppress speckle noise. And blind deconvolution is introduced to obtain low-noise and clear sub-images. Then these sub-images are registered and stitched to combine a completely and uniformly illuminated scene image. After that, a new target recognition method based on contour moments is proposed. Firstly, canny operator is used to obtain contours. For each contour, seven invariant Hu moments are calculated to generate the feature vectors. At last the feature vectors are input into double hidden layers BP neural network for classification. Experiments results indicate that the proposed algorithm could achieve a high recognition rate and satisfactory real-time performance for laser active imaging. 2013 SPIE.
收录类别	EI
会议录	5th International Symposium on Photoelectronic Detection and Imaging, ISPDI 2013, June 25, 2013 - June 27, 2013
会议录出版者	SPIE
会议录出版地	Beijing, China
内容类型	会议论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/41036]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出_会议论文
推荐引用方式 GB/T 7714	Wang C.-J.,Sun T.,Wang T.-F.,et al. The research of multi-frame target recognition based on laser active imaging[C]. 见:5th International Symposium on Photoelectronic Detection and Imaging, ISPDI 2013, June 25, 2013 - June 27, 2013. Beijing, China. June 25, 2013 - June 27, 2013.