Yazhong Zhang

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The human visual system is highly adaptive to extract structure information for scene perception, and structure character is widely used in perception-oriented image processing works. However, the existing structure descriptors mainly describe the luminance contrast of a local region, but cannot effectively represent the spatial correlation of structure. In(More)
Reduced-reference image quality assessment (RR-IQA) algorithm aims to automatically evaluate the image quality using only partial information about the reference image. In this paper, we propose a new RR-IQA metric by employing the entropy features of each frequency band in the DCT domain. It is well known that human eyes have different sensitivity to(More)
In this paper, we investigate the problem about object recognition using image matching. SIFT feature matching algorithm is a certain degree of stability on the angle changes and affine transformation. There has been more stable match capacity on images used in the field of image matching. ORB is another choice for it needs less storage space and matching(More)
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