US 7,321,696 B2
Method for efficient coding of shape descriptor parameters
Miroslaw Bober, Guildford (United Kingdom)
Assigned to Mitsubishi Denki Kabushiki Kaisha, Tokyo (Japan)
Filed on Jun. 11, 2007, as Appl. No. 11/761,070.
Application 11/761070 is a division of application No. 10/203478, granted, now 7,245,777, previously published as PCT/GB01/00835, filed on Feb. 27, 2001.
Claims priority of application No. 0004859.5 (GB), filed on Feb. 29, 2000.
Prior Publication US 2007/0230831 A1, Oct. 04, 2007
Int. Cl. G06K 9/36 (2006.01)
U.S. Cl. 382—243  [382/251] 7 Claims
OG exemplary drawing
 
1. A method of searching for an object in an image by processing signals corresponding to images, the method comprising:
inputting a query object;
deriving a representation of the query object;
comparing the query representation with a plurality of representations of objects in images; and
selecting and displaying those objects in images for which the representations indicate a degree of similarity to the query;
wherein the representations of objects in images are quantised co-ordinate values of peaks of a curvature scale space (CSS) representation of the shape of the object, and
wherein the peaks of the CSS representation are ordered in decreasing order of the peak height component values and the quantisation range for a peak height component value is based on the value of the preceding peak height value.