Among the most useful tools in the image-processing repertoire are those that generate a new pixel value based on the relationship between the value of a given pixel and the values of those that surround it. This chapter and the next describe image processing with "neighborhood" operations—that is, processes that involve the pixel's immediate (and not-so-immediate) neighbors.
This chapter focuses mainly on convolutions—operations in which new pixel values result from linear combinations (i.e., addition and multiplication) of a pixel with its neighbors. Chapter 15 deals with neighborhood operations in which the new values result from nonlinear operations (such as sorting) on the neighboring pixels.
Was this article helpful?
Artists, photographers, graphic artists and designers. In fact anyone needing a top-notch solution for picture management and editing. Set Your Photographic Creativity Free. Master Adobe Photoshop Once and For All - Create Flawless, Dramatic Images Using The Tools The Professionals Choose. Get My Video Tutorials and Retain More Information About Adobe Photoshop.