Pixel defect detection and correction device, imaging apparatus, pixel defect detection and correction method, and program

A pixel defect detection and correction device comprising:

• an average value acquisition section that acquires an average value of pixel values of adjacent pixels with different colors excluding a pixel whose defect is to be detected, which is a pixel of interest in a processing region where a plurality of adjacent pixels with the same color and a plurality of adjacent pixels with different colors are arrayed with the pixel whose defect is to be detected in the middle;
• a defect determining section that determines whether or not the pixel whose defect is to be detected is defective on the basis of at least the average value acquired by the average value acquisition section;
• and
• a detection section that detects at least maximum and minimum values from the pixel values of adjacent pixels with the same color, excluding the pixel whose defect is to be detected, in the processing region,
• wherein the defect determining section determines whether or not the pixel whose defect is to be detected is defective by comparison of the pixel value of the pixel whose defect is to be detected, the average value of adjacent pixels with different colors acquired by the average value acquisition section, and a designated different-color pixel threshold value, and
• wherein the defect determining section has a first determination function of performing a first determination, which is a determination regarding whether or not the pixel whose defect is to be detected is defective by comparing the pixel value of the pixel whose defect is to be detected with the maximum and minimum values of the pixel values of the adjacent pixels with the same color detected by the detection section, and a second determination function of performing a second determination, which is a determination regarding whether or not the pixel whose defect is to be detected is defective by comparing the pixel value of the pixel whose defect is to be detected with the average value of adjacent pixels with different colors acquired by the average value acquisition section.

A pixel defect detection and correction device comprising:

• a defect determining section configured to determine whether a given pixel is defective;
• a different-color detection section that acquires an average value AVG of pixel values of pixels that are adjacent to the given pixel and have respective colors different from the given pixel;
• and
• a same-color detection section that detects a maximum value MAX and a minimum value MIN from pixel values of pixels that are adjacent to the given pixel and have the same color as the given pixel,
• wherein the defect determining section is configured to determine whether or not the given pixel is defective by comparing the pixel value of the given pixel to same-color threshold values respectively corresponding to the maximum value MAX and the minimum value MIN, and different-color threshold values corresponding to the average value AVG.