Lines Matching refs:pixels
83 #define DEBUG_HIT_MISS 0 /* output hit/miss pixels (as gnuplot commands) */
84 #define DEBUG_NO_PIXEL_HIT 0 /* Make pixels that fail to hit anything - RED */
170 % The algorithm is based on a Elliptical Weighted Average, where the pixels
332 register const Quantum *pixels;
490 pixels=GetCacheViewVirtualPixels(average_view,0,0,1,1,
492 if (pixels == (const Quantum *) NULL) {
498 GetPixelInfoPixel(resample_filter->image,pixels,
574 Do weighted resampling of all pixels, within the scaled ellipse,
595 /* get the scanline of pixels for this v */
596 pixels=GetCacheViewVirtualPixels(resample_filter->view,u,v,(size_t) uw,
598 if (pixels == (const Quantum *) NULL)
614 pixel->alpha += weight*GetPixelAlpha(resample_filter->image,pixels);
618 weight *= QuantumScale*((double) GetPixelAlpha(resample_filter->image,pixels));
619 pixel->red += weight*GetPixelRed(resample_filter->image,pixels);
620 pixel->green += weight*GetPixelGreen(resample_filter->image,pixels);
621 pixel->blue += weight*GetPixelBlue(resample_filter->image,pixels);
623 pixel->black += weight*GetPixelBlack(resample_filter->image,pixels);
643 pixels+=GetPixelChannels(resample_filter->image);
656 /* not enough pixels, or bad weighting in resampling,
660 pixel->red = QuantumRange; /* show pixels for which EWA fails */
1112 Reconstruction and Prefiltering of the pixels in the resampling. It also
1113 means it is always likely to have at least 4 pixels within the area of the
