Patent ID: 8902336

Claim:
A defect pixel correction system for image data collected by a pixel array of an image sensor with spatially arranged exposures, comprising: a neighborhood pre-processing component that receives an exposure ratio for the pixel array and adjusts a value of at least a particular neighbor pixel of a given pixel from the image data based upon the exposure ratio, wherein the exposure ratio is a ratio of a first exposure time of a first subset of pixels of the pixel array to a second exposure time of a second subset of the pixels of the pixel array, wherein neighbor pixels of the given pixel comprise the particular neighbor pixel, wherein the neighbor pixels and the given pixel belong to a particular Bayer domain, wherein each of the neighbor pixels of the given pixel is one of vertically, horizontally, or diagonally adjacent to the given pixel within the particular Bayer domain, and wherein the neighborhood pre-processing component adjusts the value of the particular neighbor pixel within the particular Bayer domain if and only if: the first exposure time differs from the second exposure time; and the particular neighbor pixel is exposed for one of the first exposure time or the second exposure time and the given pixel is exposed for the other one of the first exposure time or the second exposure time; a neighborhood analysis component that computes neighborhood statistics for the given pixel from the image data based on values of the neighbor pixels of the given pixel from the image data as adjusted by the neighborhood pre-processing component; a defect detection component that detects whether a value of the given pixel from the image data is defective based upon the neighborhood statistics; and a replacement component that replaces the value of the given pixel from the image data when detected to be defective to output modified image data.