Replacement of defective pixels with pixels in preceding frames in focal plane array cameras

摘要

In a method for the replacement of defective pixels in focal plane array (FPA) cameras, chronologically successive frames are evaluated in order to obtain image information. The information for the defective pixel replacement is generated from chronologically preceding frames, the image content being displaced from frame to frame by an integer number of pixels and, at the position of a defective pixel where a functionally operative pixel lay in one of the preceding frames, the grey value of the latter is used for the replacement. The advantages obtained over known methods are that no computing operations are necessary for the replacement, the spatially correct image content of the pixel is used for the replacement, and systems free of defective pixels can be generated with little technical outlay.