NON-LINEAR QUANTIZATION AND SIMILARITY MATCHING METHODS FOR RETRIEVING IMAGE DATA
摘要
<p>A method for constructing a database having image information representing a plurality of images including the steps of: a) calculating Lx5 number of normalized edge histogram bins to generate L number of edge histograms of a target image, wherein each edge histogram has five normalized edge histogram bins and represents a spatial distribution of five reference edges in a sub-image and L is a positive integer, wherein the reference edges include four directional edges and a non-directional edge; b) non-linearly quantizing the Lx5 number of normalized edge histogram bins to generate Lx5 number of quantization index values for the target image; c) storing the Lx5 number of quantization index values to the database; and d) repeating the steps a) to c) until all of the stored images are processed to thereby construct the database having the image information.</p>
申请公布号
EP1329107(A1)
申请公布日期
2003.07.23
申请号
EP20010979042
申请日期
2001.10.18
申请人
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人
PARK, SOO, JUN;WON, CHEE, SUN;PARK, DONG, KWON;KIM, HYUN, JIN;PARK, SUNG, HEE;JANG, MYUNG, GIL