I'm using a small b/w digital video camera and frame grabber to catch images of meteors in maybe a 15x15 degree area. Typically noise is introduced into the frames. It is desirable to determine if the image contains a meteor, and clean up the noise in the frames. What methodology is available to do this? The camera has no way to use dark subtracts, stacking or related image processing methods. There is no way to, say, control the shutter other than to get 30 frames per second.