1.National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing 100190 2.Department of Automation, North China Electric Power University, Baoding 071003 3.Department of Computer Science and Technology, Henan Polytechnic University, Jiaozuo 454003
Abstract：An image feature based on image gradient is proposed, called Harris correlation. It is used to construct feature descriptors including point descriptor, line descriptor as well as curve descriptor. These feature descriptors are invariant to image rotation and linear intensity changes. Constructing descriptors for both line and curve explores a new way for line and curve matching. Experimental results show that the point descriptor performs well on image transformations, and the line and curve descriptors are effective in real image matching as well.
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2009, Vol. 22 
