Loren Heiny, Advanced Graphics Programming Using C/C++, John Wiley & Sons Inc., 1993.  Home/Search   Document Not in Database   Summary   Related Articles

....because of the limited inter processor connectivity on CRAM. The following sections describe the parallel algorithms and CRAM implementation of some low level image processing operations. These are based on sequential algorithms adapted from those described in the literature such as [69] [70], and [71] The simulations are based on a 256 x 256 grey scale (8 bit) image and a 64K PE CRAM, i.e. one pixel per PE. The timing results are for the case in which CRAM is used as the main memory. Otherwise, if the image is to be loaded onto CRAM from the host computer, processed, and then read ....

....operators. These compute both the magnitude and direction of the edge. However, if only the presence of the edge and not its direction is of interest, the direction invariant Laplacian edge detector (Figure 7.4) is usually used. Figure 7.4 The Laplacian Edge Detection Operator Algorithm 7. 4 [70] enhances the edges in an image by subtracting the Laplacian of a T shift 2bT c 14 W ( 0 1 0 1 4 1 0 1 0 Low Level Image Processing 131 pixel from the pixel itself. This is a high pass filter implemented by simply subtracting the low pass filter output from its input [71] ....

Loren Heiny, Advanced Graphics Programming Using C/C++, John Wiley & Sons Inc., 1993.

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