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CONTENT BASED IMAGE RETRIEVAL USING SALIENT ORIENTATION HISTOGRAMS


Clustering and Retrieval of Vi

A Directional-Edge-Based Real-

SALIENCY PRIOR CONTEXT MODEL F
Abstract


Content-aware image retrieval is a very important topic nowadays, when the amount of digital image data is highly increasing. Existing sketch based image retrieval (SBIR) systems perform at a reduced level on real life images, where background data may distort image descriptors and retrieval results. To avoid this, a preprocessing step is introduced in this paper to distinguish between foreground and background, using integrated saliency detection. To build the descriptor only on the most relevant pixels, orientation feature is extracted at salient Modified Harris for Edges and Corners (MHEC) keypoints using an improved edge map, resulting in a Salient Orientation Histogram (SOH). The proposed SBIR system is also augmented with a segmentation step for object detection. The method is tested on the THUR15000 database, containing random internet images. Image retrieval and object detection both give promising results compared to other state-of-the-art methods.

KeyWords
Direction,selectivity, Harrisforedgesandcorners,saliency, SBIR



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