Garis besar topik
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Image Restoration and Reconstruction
As in image enhancement, the principal goal of restoration techniques is to improve an image in some predefined sense. Although there are areas of overlap, image enhancement is largely a subjective process, while image restoration is for the most part an objective process. Restoration attempts to recover an image that has been degraded by using a priori knowledge of the degradation phenomenon.Thus, restoration techniques are oriented toward modeling the degradation and applying the inverse process in order to recover the original image.
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As Fig. 5.1 shows, the degradation process is modeled in this chapter as a degradation function that, together with an additive noise term, operates on an input image to produce a degraded image . Given , some knowledge about the degradation function H, and some knowledge about the additive noise term the objective of restoration is to obtain an estimate of the original image.
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