dead pixels correction

[vbussieres]

Hello,

I'd like to know if there is an efficient way to correct dead pixels in a picture. I get pictures from an infra red sensor that included dead pixels.

I know the coordinates of dead pixels and I know the coordinates of the better pixels alive close to dead pixels. So I would like to replace dead pixels by alive pixels in order to make picture as complete as possible.

The example attached show what I do, but when then number of dead pixels is quiet big, I suppose that the execution time should be very long.

Thanks

[MoviJOHN]

Begin by creating a bad pixel map.  This will essentially be a binary image, where good pixels are black (0), and bad pixels are white (1).

Use the binary image as a mask.  You can shift the the mask by one pixel in any direction to capture a replacement set of good pixels, and then combine the original image, where you have masked out bad, with the new image where you have masked in adjacent good pixels.