Bad pixel identification results

If we compute the average of many photographs from the same camera instance, the average image should be smoothly varying. This is the prior that we use. Bad pixels -- pixels that behave differently from their neighbors -- would stand out in the average image and so can be easily identified.

(a) Contrast enhanced luminance of the average of 1,186 photographs from a particular Canon S1IS camera. (b) Zoomed in portions of the image in (a) in which we can clearly see bad pixels. (c) A comparative study of the number of bad detector pixels in a particular camera instance for three different camera models.

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