The values of pixels in an image may, for various reasons, be known only imprecisely. If so, the texture of that image may be used to help estimate the true pixel values. Texture is the interrelation of pixels in an image; where there is texture, the value of one pixel may give clues as to the values of other pixels. This chapter describes how to find the most likely pixel values of an image wh...

The process of contourization is presented which converts a raster image into a discrete set of plateaux or contours . These contours can be grouped into a hierarchical structure, defining total spatial inclusion, called a contour tree. A contour coder has been developed which fully describes these contours in a compact and efficient manner and is the basis for an image compression method. Simp...

The study investigates the lossy compression of DSC raw data based upon the 12 bit baseline JPEG compression. The processing structure of a general compression model is introduced. Two configurations of model parameters are applied to an exemplary high-resolution raw image and compared concerning their performance to compression rate and compression noise. The results show that this method is c...

Image authentication veriies the originality of an image by detecting malicious manipulations. This goal is diierent from that of image watermarking which embeds into the image a signature surviving most manipulations. Existing methods for image authentication treat all types of manipulation equally (i.e., as unacceptable). However, some applications demand techniques that can distinguish accep...