Block-edge-pattern Based Image Content Descriptor
Guoqiang Xiao · 2008
In this paper,we describe a robust and effective content descriptor based on block edge patterns extracted di- rectly in DCT domain,which is suitable for applications in JPEG or MPEG compressed images and videos.This con- tent descriptor is constructed by an edge-block histogram with three patterns of horizontal edge,vertical edge and no- edge.Extensive experiments also support that the proposed content descriptor is effective in representing and descri- bing image content.Compared with comparable existing technique,the proposed descriptor achieves superior perform- ances in terms of retrieval precision and recall rates.