Industrial Technology Research Institute

Chao-Yi Cho

Tse-Min Chen

A method for detecting dead pixels obtains a downsampling set formed by a plurality of sample pixels by downsampling a to-be-tested image, and computes a moving average for each sample pixel to determine whether the sample pixel is a dead pixel candidate. If so, all pixels in a neighborhood of the dead pixel candidate are determined as to-be-detected pixels. For each to-be-detected pixel, a compensated value and a weighted average under a mask are estimated. A hypothetic dead pixel value is obtained by comparing an original pixel value of each to-be-detected pixel and the moving average of the dead pixel candidate. Whether the to-be-detected pixel is a dead pixel is determined by using the original pixel value, the compensated value, the weighted average and the hypothetic dead pixel value.

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Taichung, Taiwan

Chao-Yi Cho