The results of these filtering operations are the stretched to approximate a Gaussian distribution. The image is flipped about the vertical axis to correct for the camera orientation. This mask was then merged with original scene and a second histogram stretch performed. Tiff's are superior in many ways to .GIF's, mainly because they support color depth's greater than 8-bit. In fact, this is what many of the critics have mistakenly done in their attempt to replicate our results.
Interpolation is an entirely different process.
Now this is a rather large area that can contain all kinds of things, a couch, a chair, a TV set, a desk, and they could be all different colors or shades. Well, yes and no. This is assigned an eight-digit binary number representing one of the shades of gray in the 256 shade scale. In other words, there is more data in a single pixel than is displayed by that pixel in a raw image. The figure at right shows what happens as the camera scan passes over the edge of a landform.