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* 8/13/86 |
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*/ |
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#include "standard.h" |
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#include <string.h> |
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#include "color.h" |
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#include "pfilt.h" |
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#define RSCA 1.13 /* square-radius multiplier: sqrt(4/PI) */ |
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void |
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dobox( /* simple box filter */ |
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< |
COLOR csum, |
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> |
SCOLOR csum, |
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int xcent, |
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int ycent, |
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int c, |
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double d; |
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int y; |
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int x, offs; |
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< |
COLOR *scan; |
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> |
COLORV *scan, *scp; |
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wsum = 0; |
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< |
setcolor(csum, 0.0, 0.0, 0.0); |
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scolorblack(csum); |
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for (y = ycent+1-ybrad; y <= ycent+ybrad; y++) { |
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if (y < 0) continue; |
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if (y >= yres) break; |
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scan = scanin[y%barsize]; |
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for (x = xcent+1-xbrad; x <= xcent+xbrad; x++) { |
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offs = x < 0 ? xres : x >= xres ? -xres : 0; |
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< |
if (offs && !wrapfilt) |
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if ((offs != 0) & !wrapfilt) |
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continue; |
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d = x_c < 1.0 ? x_c*x - (c+.5) : (double)(x - xcent); |
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if (d < -0.5) continue; |
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if (d >= 0.5) break; |
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wsum++; |
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< |
addcolor(csum, scan[x+offs]); |
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> |
scp = scan + (x+offs)*NCSAMP; |
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> |
saddscolor(csum, scp); |
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} |
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} |
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if (wsum > 1) { |
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d = 1.0/wsum; |
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< |
scalecolor(csum, d); |
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> |
scalescolor(csum, d); |
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} |
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} |
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void |
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dogauss( /* gaussian filter */ |
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< |
COLOR csum, |
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> |
SCOLOR csum, |
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int xcent, |
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int ycent, |
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int c, |
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) |
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{ |
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double dy, dx, weight, wsum; |
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< |
COLOR ctmp; |
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> |
SCOLOR ctmp; |
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int y; |
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int x, offs; |
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< |
COLOR *scan; |
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> |
COLORV *scan; |
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|
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wsum = FTINY; |
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< |
setcolor(csum, 0.0, 0.0, 0.0); |
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scolorblack(csum); |
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for (y = ycent-yrad; y <= ycent+yrad; y++) { |
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if (y < 0) continue; |
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if (y >= yres) break; |
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scan = scanin[y%barsize]; |
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for (x = xcent-xrad; x <= xcent+xrad; x++) { |
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offs = x < 0 ? xres : x >= xres ? -xres : 0; |
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< |
if (offs && !wrapfilt) |
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if ((offs != 0) & !wrapfilt) |
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continue; |
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dx = (x_c*(x+.5) - (c+.5))/rad; |
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weight = lookgauss(dx*dx + dy*dy); |
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wsum += weight; |
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< |
copycolor(ctmp, scan[x+offs]); |
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< |
scalecolor(ctmp, weight); |
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< |
addcolor(csum, ctmp); |
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> |
copyscolor(ctmp, scan+(x+offs)*NCSAMP); |
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> |
scalescolor(ctmp, weight); |
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> |
saddscolor(csum, ctmp); |
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} |
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} |
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weight = 1.0/wsum; |
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< |
scalecolor(csum, weight); |
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> |
scalescolor(csum, weight); |
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} |
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for (c = -orad; c <= orad; c++) { |
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offs = ccent+c < 0 ? ncols : |
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ccent+c >= ncols ? -ncols : 0; |
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< |
if (offs && !wrapfilt) |
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> |
if ((offs != 0) & !wrapfilt) |
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continue; |
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x = ringndx[c*c + r*r]; |
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if (x < 0) continue; |
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if (d >= 0.5) break; |
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for (x = xcent+1-xbrad; x <= xcent+xbrad; x++) { |
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offs = x < 0 ? xres : x >= xres ? -xres : 0; |
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< |
if (offs && !wrapfilt) |
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> |
if ((offs != 0) & !wrapfilt) |
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continue; |
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d = x_c < 1.0 ? x_c*x - (ccent+.5) : (double)(x - xcent); |
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if (d < -0.5) continue; |
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if (d >= 0.5) break; |
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sumans(x, y, rcent, ccent, |
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< |
pickfilt((*ourbright)(scanin[y%barsize][x+offs]))); |
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> |
pickfilt((*ourbright)(scanin[y%barsize]+(x+offs)*NCSAMP))); |
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} |
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} |
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} |
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) |
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{ |
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double dy2, dx; |
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< |
COLOR pval, ctmp; |
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> |
SCOLOR pval, ctmp; |
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int ksiz, r, offs; |
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double pc, pr, norm; |
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int i, c; |
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< |
COLOR *scan; |
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> |
COLORV *scan, *scp; |
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/* |
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* This normalization method fails at the picture borders because |
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* a different number of input pixels contribute there. |
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*/ |
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< |
scan = scanin[py%barsize] + (px < 0 ? xres : px >= xres ? -xres : 0); |
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< |
copycolor(pval, scan[px]); |
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> |
scan = scanin[py%barsize] + (px < 0 ? xres : px >= xres ? -xres : 0)*NCSAMP; |
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> |
copyscolor(pval, scan+px*NCSAMP); |
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pc = x_c*(px+.5); |
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pr = y_r*(py+.5); |
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ksiz = CHECKRAD*m*rad + 1; |
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offs = c < 0 ? ncols : c >= ncols ? -ncols : 0; |
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if ((offs != 0) & !wrapfilt) |
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continue; |
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< |
copycolor(ctmp, pval); |
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> |
copyscolor(ctmp, pval); |
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dx = norm*warr[i++]; |
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< |
scalecolor(ctmp, dx); |
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< |
addcolor(scan[c+offs], ctmp); |
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> |
scalescolor(ctmp, dx); |
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> |
scp = scan + (c+offs)*NCSAMP; |
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> |
saddscolor(scp, ctmp); |
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} |
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} |
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} |
