Defect detection apparatus, defect detection method, image sensor device and an image sensor module

摘要

The present invention discloses a defect detecting device and method, image sensor device and module. The defect detecting device includes: pixel value correcting part, for correcting pixel value for detecting image of object in a defect area, so as to emphasize the defect area of the detecting image relative to other area of detecting image; a block splitting processing part, for splitting the detecting image with corrected pixel value into a plurality of blocks and calculating block addition value or block average, the addition value is obtained by adding up pixel values of pixels in each block, the average is obtained through the addition value being divided by the number of the pixels in each block; a good/bad judgement part, for judging whether existing outlier of the addition value or the block average by means of the statistical treatment of a statistical processing part, so as to judge whether existing the defect area. By means of emphasizing the defect area of the image of the image sensor, it is able to implement defect detecting device and defect detecting method with high precision for detecting defect area.