Shanghai Linkchip Semiconductor Technology Co., Ltd.

Hengjie Lin

Rui Zhang

Ming Hong

An image enhancement method includes: acquiring an image in a YUV format (); performing N max layers of wavelet decomposition on a brightness component and chrominance components respectively (); starting from the (N max)th layer, performing wavelet reconstruction on the low frequency sub-bands of the chrominance components of each layer on which edge preserving filtering has been performed according to the low frequency sub-band of the brightness component of the corresponding layer, and the high frequency sub-bands of the chrominance components continuously towards an upper layer until an image of an original size is obtained (); performing, according to the brightness component, edge preserving filtering on the chrominance components that have been subjected to the wavelet reconstruction (); integrating the chrominance components that have been subjected to the edge preserving filtering and the brightness component ().

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SHANGHAI, China

Hengjie Lin