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Abstract Digital image warping is a growing branch of image processing that deals with the geometric transformation =f digital images [Wolberg, 1990]. A geometric trans¬formation is an operation that redefines the spatial relationship between points in an image. Digital image warping may range from something as simple as a trans¬la-:ion, scale, or rotation, to something as elaborate as a convoluted transformation. Image warping has been the subject of considerable attention in remote sensing, medical imaging, computer vision, computer graphics, distortion compensation of imaging sensors, decalibration for image registration, geometrical normalization for image analysis and display, map projection, and texture mapping for image synthesis [Lilles, 1979]. Historically, geometric transformations -o,,ere first performed on continuous (analog) images using optical systems [Swain, 1978]. |