By Bernd Jahne
This fashioned and well-received monograph deals an fundamental view of photograph processing - from photograph acquisition to the extraction of the knowledge of curiosity – written via a actual scientists for different scientists. supplementations dialogue of the final suggestions is supplemented with examples from functions on PC-based snapshot processing platforms and ready-to-use implementations of significant algorithms. thoroughly revised and prolonged, the main impressive extensions being a close dialogue on random variables and fields, 3-D imaging concepts and a unified method of regularized parameter estimation. whole textual content of the e-book is now to be had at the accompanying CD-ROM. it truly is hyperlinked in order that it may be utilized in a truly versatile approach. CD-ROM incorporates a complete set of routines to all subject matters coated via this ebook and a runtime model of the picture processing software program heurisko. a wide choice of pictures, photograph sequences, and volumetric photos is on the market for perform routines
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Additional info for Digital Image Processing, 6th Revised and Extended Edition
7 shows images quantized with 2 to 16 levels of gray values. It can be seen clearly that a low number of gray values leads to false edges and makes it very diﬃcult to recognize objects that show slow spatial variation in gray values. In printed images, 16 levels of gray values seem to be suﬃcient, but on a monitor we would still be able to see the gray value steps. Generally, image data are quantized into 256 gray values. Then each pixel occupies 8 bits or one byte. 7: Illustration of quantization.
In 64-bit machines, eight 8-bit, four 16-bit or two 32-bit data can be processed together. Sun was the ﬁrst to integrate the SIMD concept into a general-purpose computer architecture with the visual instruction set (VIS ) on the UltraSparc architecture . In January 1997 Intel introduced the Multimedia Instruction Set Extension (MMX ) for the next generation of Pentium processors (P55C). The SIMD concept was quickly adopted by other processor manufacturers. Motorola, for instance, developed the AltiVec instruction set.
C The black region counts as one object (connected region) in an 8-neighborhood but as two objects in a 4-neighborhood. ions, or molecules which can be classiﬁed by their symmetries and the geometry of the elementary cell. In 2-D, classiﬁcation of digital grids is much simpler than in 3-D. If we consider only regular polygons, we have only three possibilities: triangles, squares, and hexagons (Fig. 3). The 3-D spaces (and even higher-dimensional spaces) are also of interest in image processing.