By George Wolberg
This best-selling, unique textual content makes a speciality of picture reconstruction, real-time texture mapping, separable algorithms, two-pass transforms, mesh warping, and lighting tricks. The textual content, containing all unique fabric, starts with the heritage of the sector and keeps with a evaluation of universal terminology, mathematical preliminaries, and electronic photograph acquisition. Later chapters speak about equations for spatial info, interpolation kernels, filtering difficulties, and fast-warping concepts in keeping with scanline algorithms.
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Additional info for Digital Image Warping
As a result, this image is a useful benchmark for evaluating the ﬁltering quality of a warping algorithm. 6. SUMMARY Input imagery appears in many different media, including photographs, ﬁlm, and surface radiance. The purpose of digital image acquisition Systems is to convert these input sources into digital form, thereby meeting the most basic requirement for computer processing of images. This is a two stage process. First, imaging systems are used to generate analog signals in response to incident light.
Light intensity), the PSF is restricted to be positive. The term impulse response, on the other hand, is more general and is allowed to take on negative and complex values. As its name suggests, the PSF is taken to be a bandlimiting ﬁlter having blurring characteristics. It reﬂects the physical limitations of a lens to accurately resolve each input point without the inﬂuence of neighboring points. Consequently. the PSF is typically modeled as a low-pass ﬁlter given by a bell-shaped weighting function over a ﬁnite aperture area.
They use stationary line sensors with a mir— ror to deﬂect the light from successive image rows onto the senSOr. In a second manifestation, the actual line sensor is physically moved inside the camera. These techniques basically address the manner in which the image is presented to the photosensors. The actual choice of sensors, however, can be taken from electronic scanners or solid-state imaging devices. Futhermore, the light sources can be generated by a CRT, laser beam, lamp, or light-emitting diodes (LEDs).