Image retrieval of the block edge pattern based on run-length coding
Jianmin Jiang · Journal of Computer Applications · 2006
A new image retrieval algorithm based on block edge patterns was proposed in this paper.Block edge patterns were extracted in each 8×8 block of an image.Then by following the principle of run-length coding,the features of an image were extracted by utilizing block edge patterns to implement content-based image retrieval inside image database.Because the edge orientation of each block can be estimated in DCT(Discrete Cosine Transform) without decompressing,computation complexity declined greatly.In comparison with current representative techniques,the experimental results demonstrate the proposed algorithm has better performance both in retrieval efficiency and effectiveness.