int main(int argc, char **argv) { l_int32 index; l_uint32 val32; BOX *box, *box1, *box2, *box3, *box4, *box5; BOXA *boxa; L_KERNEL *kel; PIX *pixs, *pixg, *pixb, *pixd, *pixt, *pix1, *pix2, *pix3, *pix4; PIXA *pixa; PIXCMAP *cmap; L_REGPARAMS *rp; if (regTestSetup(argc, argv, &rp)) return 1; pixa = pixaCreate(0); /* Color non-white pixels on RGB */ pixs = pixRead("lucasta-frag.jpg"); pixt = pixConvert8To32(pixs); box = boxCreate(120, 30, 200, 200); pixColorGray(pixt, box, L_PAINT_DARK, 220, 0, 0, 255); regTestWritePixAndCheck(rp, pixt, IFF_JFIF_JPEG); /* 0 */ pixaAddPix(pixa, pixt, L_COPY); pixColorGray(pixt, NULL, L_PAINT_DARK, 220, 255, 100, 100); regTestWritePixAndCheck(rp, pixt, IFF_JFIF_JPEG); /* 1 */ pixaAddPix(pixa, pixt, L_INSERT); boxDestroy(&box); /* Color non-white pixels on colormap */ pixt = pixThresholdTo4bpp(pixs, 6, 1); box = boxCreate(120, 30, 200, 200); pixColorGray(pixt, box, L_PAINT_DARK, 220, 0, 0, 255); regTestWritePixAndCheck(rp, pixt, IFF_PNG); /* 2 */ pixaAddPix(pixa, pixt, L_COPY); pixColorGray(pixt, NULL, L_PAINT_DARK, 220, 255, 100, 100); regTestWritePixAndCheck(rp, pixt, IFF_PNG); /* 3 */ pixaAddPix(pixa, pixt, L_INSERT); boxDestroy(&box); /* Color non-black pixels on RGB */ pixt = pixConvert8To32(pixs); box = boxCreate(120, 30, 200, 200); pixColorGray(pixt, box, L_PAINT_LIGHT, 20, 0, 0, 255); regTestWritePixAndCheck(rp, pixt, IFF_PNG); /* 4 */ pixaAddPix(pixa, pixt, L_COPY); pixColorGray(pixt, NULL, L_PAINT_LIGHT, 80, 255, 100, 100); regTestWritePixAndCheck(rp, pixt, IFF_PNG); /* 5 */ pixaAddPix(pixa, pixt, L_INSERT); boxDestroy(&box); /* Color non-black pixels on colormap */ pixt = pixThresholdTo4bpp(pixs, 6, 1); box = boxCreate(120, 30, 200, 200); pixColorGray(pixt, box, L_PAINT_LIGHT, 20, 0, 0, 255); regTestWritePixAndCheck(rp, pixt, IFF_PNG); /* 6 */ pixaAddPix(pixa, pixt, L_COPY); pixColorGray(pixt, NULL, L_PAINT_LIGHT, 20, 255, 100, 100); regTestWritePixAndCheck(rp, pixt, IFF_PNG); /* 7 */ pixaAddPix(pixa, pixt, L_INSERT); boxDestroy(&box); /* Add highlight color to RGB */ pixt = pixConvert8To32(pixs); box = boxCreate(507, 5, 385, 45); pixg = pixClipRectangle(pixs, box, NULL); pixb = pixThresholdToBinary(pixg, 180); pixInvert(pixb, pixb); pixDisplayWrite(pixb, 1); composeRGBPixel(50, 0, 250, &val32); pixPaintThroughMask(pixt, pixb, box->x, box->y, val32); boxDestroy(&box); pixDestroy(&pixg); pixDestroy(&pixb); box = boxCreate(236, 107, 262, 40); pixg = pixClipRectangle(pixs, box, NULL); pixb = pixThresholdToBinary(pixg, 180); pixInvert(pixb, pixb); composeRGBPixel(250, 0, 50, &val32); pixPaintThroughMask(pixt, pixb, box->x, box->y, val32); boxDestroy(&box); pixDestroy(&pixg); pixDestroy(&pixb); box = boxCreate(222, 208, 247, 43); pixg = pixClipRectangle(pixs, box, NULL); pixb = pixThresholdToBinary(pixg, 180); pixInvert(pixb, pixb); composeRGBPixel(60, 250, 60, &val32); pixPaintThroughMask(pixt, pixb, box->x, box->y, val32); regTestWritePixAndCheck(rp, pixt, IFF_PNG); /* 8 */ pixaAddPix(pixa, pixt, L_INSERT); boxDestroy(&box); pixDestroy(&pixg); pixDestroy(&pixb); /* Add highlight color to colormap */ pixt = pixThresholdTo4bpp(pixs, 5, 1); cmap = pixGetColormap(pixt); pixcmapGetIndex(cmap, 255, 255, 255, &index); box = boxCreate(507, 5, 385, 45); pixSetSelectCmap(pixt, box, index, 50, 0, 250); boxDestroy(&box); box = boxCreate(236, 107, 262, 40); pixSetSelectCmap(pixt, box, index, 250, 0, 50); boxDestroy(&box); box = boxCreate(222, 208, 247, 43); pixSetSelectCmap(pixt, box, index, 60, 250, 60); regTestWritePixAndCheck(rp, pixt, IFF_PNG); /* 9 */ pixaAddPix(pixa, pixt, L_INSERT); boxDestroy(&box); /* Paint lines on RGB */ pixt = pixConvert8To32(pixs); pixRenderLineArb(pixt, 450, 20, 850, 320, 5, 200, 50, 125); pixRenderLineArb(pixt, 30, 40, 440, 40, 5, 100, 200, 25); box = boxCreate(70, 80, 300, 245); pixRenderBoxArb(pixt, box, 3, 200, 200, 25); regTestWritePixAndCheck(rp, pixt, IFF_JFIF_JPEG); /* 10 */ pixaAddPix(pixa, pixt, L_INSERT); boxDestroy(&box); /* Paint lines on colormap */ pixt = pixThresholdTo4bpp(pixs, 5, 1); pixRenderLineArb(pixt, 450, 20, 850, 320, 5, 200, 50, 125); pixRenderLineArb(pixt, 30, 40, 440, 40, 5, 100, 200, 25); box = boxCreate(70, 80, 300, 245); pixRenderBoxArb(pixt, box, 3, 200, 200, 25); regTestWritePixAndCheck(rp, pixt, IFF_PNG); /* 11 */ pixaAddPix(pixa, pixt, L_INSERT); boxDestroy(&box); /* Blend lines on RGB */ pixt = pixConvert8To32(pixs); pixRenderLineBlend(pixt, 450, 20, 850, 320, 5, 200, 50, 125, 0.35); pixRenderLineBlend(pixt, 30, 40, 440, 40, 5, 100, 200, 25, 0.35); box = boxCreate(70, 80, 300, 245); pixRenderBoxBlend(pixt, box, 3, 200, 200, 25, 0.6); regTestWritePixAndCheck(rp, pixt, IFF_JFIF_JPEG); /* 12 */ pixaAddPix(pixa, pixt, L_INSERT); boxDestroy(&box); /* Colorize gray on cmapped image. */ pix1 = pixRead("lucasta.150.jpg"); pix2 = pixThresholdTo4bpp(pix1, 7, 1); box1 = boxCreate(73, 206, 140, 27); pixColorGrayCmap(pix2, box1, L_PAINT_LIGHT, 130, 207, 43); regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 13 */ pixaAddPix(pixa, pix2, L_COPY); if (rp->display) pixPrintStreamInfo(stderr, pix2, "One box added"); box2 = boxCreate(255, 404, 197, 25); pixColorGrayCmap(pix2, box2, L_PAINT_LIGHT, 230, 67, 119); regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 14 */ pixaAddPix(pixa, pix2, L_COPY); if (rp->display) pixPrintStreamInfo(stderr, pix2, "Two boxes added"); box3 = boxCreate(122, 756, 224, 22); pixColorGrayCmap(pix2, box3, L_PAINT_DARK, 230, 67, 119); regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 15 */ pixaAddPix(pixa, pix2, L_COPY); if (rp->display) pixPrintStreamInfo(stderr, pix2, "Three boxes added"); box4 = boxCreate(11, 780, 147, 22); pixColorGrayCmap(pix2, box4, L_PAINT_LIGHT, 70, 137, 229); regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 16 */ pixaAddPix(pixa, pix2, L_COPY); if (rp->display) pixPrintStreamInfo(stderr, pix2, "Four boxes added"); box5 = boxCreate(163, 605, 78, 22); pixColorGrayCmap(pix2, box5, L_PAINT_LIGHT, 70, 137, 229); regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 17 */ pixaAddPix(pixa, pix2, L_INSERT); if (rp->display) pixPrintStreamInfo(stderr, pix2, "Five boxes added"); pixDestroy(&pix1); boxDestroy(&box1); boxDestroy(&box2); boxDestroy(&box3); boxDestroy(&box4); boxDestroy(&box5); pixDestroy(&pixs); /* Make a gray image and identify the fg pixels (val > 230) */ pixs = pixRead("feyn-fract.tif"); pix1 = pixConvertTo8(pixs, 0); kel = makeGaussianKernel(2, 2, 1.5, 1.0); pix2 = pixConvolve(pix1, kel, 8, 1); pix3 = pixThresholdToBinary(pix2, 230); boxa = pixConnComp(pix3, NULL, 8); pixDestroy(&pixs); pixDestroy(&pix1); pixDestroy(&pix3); kernelDestroy(&kel); /* Color the individual components in the gray image */ pix4 = pixColorGrayRegions(pix2, boxa, L_PAINT_DARK, 230, 255, 0, 0); regTestWritePixAndCheck(rp, pix4, IFF_PNG); /* 18 */ pixaAddPix(pixa, pix4, L_INSERT); pixDisplayWithTitle(pix4, 0, 0, NULL, rp->display); /* Threshold to 10 levels of gray */ pix3 = pixThresholdOn8bpp(pix2, 10, 1); regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 19 */ pixaAddPix(pixa, pix3, L_COPY); /* Color the individual components in the cmapped image */ pix4 = pixColorGrayRegions(pix3, boxa, L_PAINT_DARK, 230, 255, 0, 0); regTestWritePixAndCheck(rp, pix4, IFF_PNG); /* 20 */ pixaAddPix(pixa, pix4, L_INSERT); pixDisplayWithTitle(pix4, 0, 100, NULL, rp->display); boxaDestroy(&boxa); /* Color the entire gray image (not component-wise) */ pixColorGray(pix2, NULL, L_PAINT_DARK, 230, 255, 0, 0); regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 21 */ pixaAddPix(pixa, pix2, L_INSERT); /* Color the entire cmapped image (not component-wise) */ pixColorGray(pix3, NULL, L_PAINT_DARK, 230, 255, 0, 0); regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 22 */ pixaAddPix(pixa, pix3, L_INSERT); /* Reconstruct cmapped images */ pixd = ReconstructByValue(rp, "weasel2.4c.png"); regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 23 */ pixaAddPix(pixa, pixd, L_INSERT); pixd = ReconstructByValue(rp, "weasel4.11c.png"); regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 24 */ pixaAddPix(pixa, pixd, L_INSERT); pixd = ReconstructByValue(rp, "weasel8.240c.png"); regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 25 */ pixaAddPix(pixa, pixd, L_INSERT); /* Fake reconstruct cmapped images, with one color into a band */ pixd = FakeReconstructByBand(rp, "weasel2.4c.png"); regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 26 */ pixaAddPix(pixa, pixd, L_INSERT); pixd = FakeReconstructByBand(rp, "weasel4.11c.png"); regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 27 */ pixaAddPix(pixa, pixd, L_INSERT); pixd = FakeReconstructByBand(rp, "weasel8.240c.png"); regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 28 */ pixaAddPix(pixa, pixd, L_INSERT); /* If in testing mode, make a pdf */ if (rp->display) { pixaConvertToPdf(pixa, 100, 1.0, L_FLATE_ENCODE, 0, "Colorize and paint", "/tmp/lept/regout/paint.pdf"); L_INFO("Output pdf: /tmp/lept/regout/paint.pdf\n", rp->testname); } pixaDestroy(&pixa); return regTestCleanup(rp); }
main(int argc, char **argv) { const char *str; l_int32 equal, index, w, h; BOX *box; PIX *pixs, *pixd, *pixt, *pixd1, *pixd2, *pixd3; PIX *pixt0, *pixt1, *pixt2, *pixt3, *pixt4; PIXA *pixa; PIXCMAP *cmap; static char mainName[] = "grayquant_reg"; if ((pixs = pixRead("test8.jpg")) == NULL) exit(ERROR_INT("pixs not made", mainName, 1)); pixa = pixaCreate(0); pixSaveTiled(pixs, pixa, 1, 1, 20, 8); /* threshold to 1 bpp */ pixd = pixThresholdToBinary(pixs, THRESHOLD); pixSaveTiled(pixd, pixa, 1, 1, 20, 0); pixWrite("/tmp/junkthr0.png", pixd, IFF_PNG); pixDestroy(&pixd); /* dither to 2 bpp, with and without colormap */ pixd = pixDitherTo2bpp(pixs, 1); pixt = pixDitherTo2bpp(pixs, 0); pixt2 = pixConvertGrayToColormap(pixt); pixSaveTiled(pixd, pixa, 1, 1, 20, 0); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixSaveTiled(pixt2, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr1.png", pixd, IFF_PNG); pixWrite("/tmp/junkthr2.png", pixt, IFF_PNG); pixWrite("/tmp/junkthr3.png", pixt2, IFF_PNG); /* pixcmapWriteStream(stderr, pixGetColormap(pixd)); */ pixEqual(pixd, pixt2, &equal); if (!equal) fprintf(stderr, "Error: thr2 != thr3\n"); pixDestroy(&pixt); pixDestroy(&pixt2); pixDestroy(&pixd); /* threshold to 2 bpp, with and without colormap */ pixd = pixThresholdTo2bpp(pixs, 4, 1); pixt = pixThresholdTo2bpp(pixs, 4, 0); pixt2 = pixConvertGrayToColormap(pixt); pixSaveTiled(pixd, pixa, 1, 1, 20, 0); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixSaveTiled(pixt2, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr4.png", pixd, IFF_PNG); pixWrite("/tmp/junkthr5.png", pixt2, IFF_PNG); pixEqual(pixd, pixt2, &equal); if (!equal) fprintf(stderr, "Error: thr4 != thr5\n"); pixDestroy(&pixt); pixDestroy(&pixt2); pixDestroy(&pixd); pixd = pixThresholdTo2bpp(pixs, 3, 1); pixt = pixThresholdTo2bpp(pixs, 3, 0); pixSaveTiled(pixd, pixa, 1, 1, 20, 0); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr6.png", pixd, IFF_PNG); pixWrite("/tmp/junkthr7.png", pixt, IFF_PNG); pixDestroy(&pixt); pixDestroy(&pixd); /* threshold to 4 bpp, with and without colormap */ pixd = pixThresholdTo4bpp(pixs, 9, 1); pixt = pixThresholdTo4bpp(pixs, 9, 0); pixt2 = pixConvertGrayToColormap(pixt); pixSaveTiled(pixd, pixa, 1, 1, 20, 0); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixSaveTiled(pixt2, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr8.png", pixd, IFF_PNG); pixWrite("/tmp/junkthr9.png", pixt, IFF_PNG); pixWrite("/tmp/junkthr10.png", pixt2, IFF_PNG); /* pixcmapWriteStream(stderr, pixGetColormap(pixd)); */ pixDestroy(&pixt); pixDestroy(&pixt2); pixDestroy(&pixd); /* threshold on 8 bpp, with and without colormap */ pixd = pixThresholdOn8bpp(pixs, 9, 1); pixt = pixThresholdOn8bpp(pixs, 9, 0); pixt2 = pixConvertGrayToColormap(pixt); pixSaveTiled(pixd, pixa, 1, 1, 20, 0); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixSaveTiled(pixt2, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr11.png", pixd, IFF_PNG); pixWrite("/tmp/junkthr12.png", pixt2, IFF_PNG); /* pixcmapWriteStream(stderr, pixGetColormap(pixd)); */ pixEqual(pixd, pixt2, &equal); if (!equal) fprintf(stderr, "Error: thr11 != thr12\n"); pixDestroy(&pixt); pixDestroy(&pixt2); pixDestroy(&pixd); pixd1 = pixaDisplay(pixa, 0, 0); pixDisplay(pixd1, 100, 100); pixWrite("/tmp/junkpixd1.jpg", pixd1, IFF_JFIF_JPEG); pixDestroy(&pixd1); pixaDestroy(&pixa); pixa = pixaCreate(0); pixSaveTiled(pixs, pixa, 1, 1, 20, 32); /* highlight 2 bpp with colormap */ pixd = pixThresholdTo2bpp(pixs, 3, 1); cmap = pixGetColormap(pixd); pixcmapWriteStream(stderr, cmap); box = boxCreate(278, 35, 122, 50); pixSetSelectCmap(pixd, box, 2, 255, 255, 100); pixcmapWriteStream(stderr, cmap); pixDisplay(pixd, 0, 0); pixSaveTiled(pixd, pixa, 1, 1, 20, 0); pixWrite("/tmp/junkthr13.png", pixd, IFF_PNG); pixDestroy(&pixd); boxDestroy(&box); /* test pixThreshold8() */ pixd = pixThreshold8(pixs, 1, 2, 1); /* cmap */ pixSaveTiled(pixd, pixa, 1, 1, 20, 0); pixWrite("/tmp/junkthr14.png", pixd, IFF_PNG); pixDisplay(pixd, 100, 0); pixDestroy(&pixd); pixd = pixThreshold8(pixs, 1, 2, 0); /* no cmap */ pixSaveTiled(pixd, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr15.png", pixd, IFF_PNG); pixDisplay(pixd, 200, 0); pixDestroy(&pixd); pixd = pixThreshold8(pixs, 2, 3, 1); /* highlight one box */ pixSaveTiled(pixd, pixa, 1, 0, 20, 0); box = boxCreate(278, 35, 122, 50); pixSetSelectCmap(pixd, box, 2, 255, 255, 100); pixWrite("/tmp/junkthr16.png", pixd, IFF_PNG); pixDisplay(pixd, 300, 0); cmap = pixGetColormap(pixd); pixcmapWriteStream(stderr, cmap); boxDestroy(&box); pixDestroy(&pixd); pixd = pixThreshold8(pixs, 2, 4, 0); /* no cmap */ pixSaveTiled(pixd, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr17.png", pixd, IFF_PNG); pixDisplay(pixd, 400, 0); pixDestroy(&pixd); pixd = pixThreshold8(pixs, 4, 6, 1); /* highlight one box */ box = boxCreate(278, 35, 122, 50); pixSetSelectCmap(pixd, box, 5, 255, 255, 100); pixSaveTiled(pixd, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr18.png", pixd, IFF_PNG); cmap = pixGetColormap(pixd); pixcmapWriteStream(stderr, cmap); boxDestroy(&box); pixDisplay(pixd, 500, 0); pixDestroy(&pixd); pixd = pixThreshold8(pixs, 4, 6, 0); /* no cmap */ pixSaveTiled(pixd, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr19.png", pixd, IFF_PNG); pixDisplay(pixd, 600, 0); pixDestroy(&pixd); /* highlight 4 bpp with 2 colormap entries */ /* Note: We use 5 levels (0-4) for gray. */ /* 5 & 6 are used for highlight color. */ pixd = pixThresholdTo4bpp(pixs, 5, 1); cmap = pixGetColormap(pixd); pixcmapGetIndex(cmap, 255, 255, 255, &index); box = boxCreate(278, 35, 122, 50); pixSetSelectCmap(pixd, box, index, 255, 255, 100); /* use 5 */ boxDestroy(&box); box = boxCreate(4, 6, 157, 33); pixSetSelectCmap(pixd, box, index, 100, 255, 255); /* use 6 */ boxDestroy(&box); pixcmapWriteStream(stderr, cmap); pixSaveTiled(pixd, pixa, 1, 1, 20, 0); pixDisplay(pixd, 700, 0); pixWrite("/tmp/junkthr20.png", pixd, IFF_PNG); pixDestroy(&pixd); /* comparison 8 bpp jpeg with 2 bpp (highlight) */ pixDestroy(&pixs); pixs = pixRead("feyn.tif"); pixt = pixScaleToGray4(pixs); pixt2 = pixReduceRankBinaryCascade(pixs, 2, 2, 0, 0); pixd = pixThresholdTo2bpp(pixt, 3, 1); box = boxCreate(175, 208, 228, 88); pixSetSelectCmap(pixd, box, 2, 255, 255, 100); pixDisplay(pixd, 100, 200); cmap = pixGetColormap(pixd); pixcmapWriteStream(stderr, cmap); pixSaveTiled(pixt, pixa, 1, 1, 20, 0); pixSaveTiled(pixt2, pixa, 1, 0, 20, 0); pixSaveTiled(pixd, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr21.jpg", pixt, IFF_JFIF_JPEG); pixWrite("/tmp/junkthr22.png", pixt2, IFF_PNG); pixWrite("/tmp/junkthr23.png", pixd, IFF_PNG); pixDestroy(&pixd); pixDestroy(&pixt2); boxDestroy(&box); /* thresholding to 4 bpp (highlight); use pixt from above */ pixd = pixThresholdTo4bpp(pixt, NLEVELS, 1); box = boxCreate(175, 208, 228, 83); pixSetSelectCmap(pixd, box, NLEVELS - 1, 255, 255, 100); boxDestroy(&box); box = boxCreate(232, 298, 110, 25); pixSetSelectCmap(pixd, box, NLEVELS - 1, 100, 255, 255); boxDestroy(&box); box = boxCreate(21, 698, 246, 82); pixSetSelectCmap(pixd, box, NLEVELS - 1, 225, 100, 255); boxDestroy(&box); pixDisplay(pixd, 500, 200); cmap = pixGetColormap(pixd); pixcmapWriteStream(stderr, cmap); pixt2 = pixReduceRankBinaryCascade(pixs, 2, 2, 0, 0); pixSaveTiled(pixt2, pixa, 1, 1, 20, 0); pixSaveTiled(pixd, pixa, 1, 0, 20, 0); pixWrite("/tmp/junkthr24.png", pixt2, IFF_PNG); pixWrite("/tmp/junkthr25.png", pixd, IFF_PNG); pixDestroy(&pixt2); pixDestroy(&pixd); /* Thresholding to 4 bpp at 2, 3, 4, 5 and 6 levels */ box = boxCreate(25, 202, 136, 37); pixt1 = pixClipRectangle(pixt, box, NULL); pixt2 = pixScale(pixt1, 6., 6.); pixGetDimensions(pixt2, &w, &h, NULL); pixSaveTiled(pixt2, pixa, 1, 1, 20, 0); pixDisplay(pixt2, 0, 0); pixWrite("/tmp/junk-8.jpg", pixt2, IFF_JFIF_JPEG); pixd = pixCreate(w, 6 * h, 8); pixRasterop(pixd, 0, 0, w, h, PIX_SRC, pixt2, 0, 0); pixt3 = pixThresholdTo4bpp(pixt2, 6, 1); pixt4 = pixRemoveColormap(pixt3, REMOVE_CMAP_TO_GRAYSCALE); pixRasterop(pixd, 0, h, w, h, PIX_SRC, pixt4, 0, 0); pixSaveTiled(pixt3, pixa, 1, 0, 20, 0); pixDisplay(pixt3, 0, 100); pixWrite("/tmp/junk-4-6.png", pixt3, IFF_PNG); pixDestroy(&pixt3); pixDestroy(&pixt4); pixt3 = pixThresholdTo4bpp(pixt2, 5, 1); pixt4 = pixRemoveColormap(pixt3, REMOVE_CMAP_TO_GRAYSCALE); pixRasterop(pixd, 0, 2 * h, w, h, PIX_SRC, pixt4, 0, 0); pixSaveTiled(pixt3, pixa, 1, 0, 20, 0); pixDisplay(pixt3, 0, 200); pixWrite("/tmp/junk-4-5.png", pixt3, IFF_PNG); pixDestroy(&pixt3); pixDestroy(&pixt4); pixt3 = pixThresholdTo4bpp(pixt2, 4, 1); pixt4 = pixRemoveColormap(pixt3, REMOVE_CMAP_TO_GRAYSCALE); pixRasterop(pixd, 0, 3 * h, w, h, PIX_SRC, pixt4, 0, 0); pixSaveTiled(pixt3, pixa, 1, 0, 20, 0); pixDisplay(pixt3, 0, 300); pixWrite("/tmp/junk-4-4.png", pixt3, IFF_PNG); pixDestroy(&pixt3); pixDestroy(&pixt4); pixt3 = pixThresholdTo4bpp(pixt2, 3, 1); pixt4 = pixRemoveColormap(pixt3, REMOVE_CMAP_TO_GRAYSCALE); pixRasterop(pixd, 0, 4 * h, w, h, PIX_SRC, pixt4, 0, 0); pixSaveTiled(pixt3, pixa, 1, 1, 20, 0); pixDisplay(pixt3, 0, 400); pixWrite("/tmp/junk-4-3.png", pixt3, IFF_PNG); pixDestroy(&pixt3); pixDestroy(&pixt4); pixt3 = pixThresholdTo4bpp(pixt2, 2, 1); pixt4 = pixRemoveColormap(pixt3, REMOVE_CMAP_TO_GRAYSCALE); pixRasterop(pixd, 0, 5 * h, w, h, PIX_SRC, pixt4, 0, 0); pixDisplay(pixt3, 0, 500); pixSaveTiled(pixt3, pixa, 1, 0, 20, 0); pixWrite("/tmp/junk-4-2.png", pixt3, IFF_PNG); pixDestroy(&pixt3); pixDestroy(&pixt4); pixWrite("/tmp/junk-all.png", pixd, IFF_PNG); pixDestroy(&pixd); pixd2 = pixaDisplay(pixa, 0, 0); pixDisplay(pixd2, 100, 100); pixWrite("/tmp/junkpixd2.jpg", pixd2, IFF_JFIF_JPEG); pixDestroy(&pixd2); pixaDestroy(&pixa); #if 0 /* upscale 2x and threshold to 1 bpp; e.g., use test8.jpg */ startTimer(); pixd = pixScaleGray2xLIThresh(pixs, THRESHOLD); fprintf(stderr, " time for scale/dither = %7.3f sec\n", stopTimer()); pixWrite(fileout, pixd, IFF_PNG); pixDestroy(&pixd); #endif #if 0 /* upscale 4x and threshold to 1 bpp; e.g., use test8.jpg */ startTimer(); pixd = pixScaleGray4xLIThresh(pixs, THRESHOLD); fprintf(stderr, " time for scale/dither = %7.3f sec\n", stopTimer()); pixWrite(fileout, pixd, IFF_PNG); pixDestroy(&pixd); #endif boxDestroy(&box); pixDestroy(&pixt); pixDestroy(&pixt1); pixDestroy(&pixt2); pixDestroy(&pixs); /* Thresholding with fixed and arbitrary bin boundaries */ pixa = pixaCreate(0); pixs = pixRead("stampede2.jpg"); pixSaveTiled(pixs, pixa, 1, 1, 20, 8); pixt = pixThresholdTo4bpp(pixs, 5, 1); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixDestroy(&pixt); pixt = pixThresholdTo4bpp(pixs, 7, 1); cmap = pixGetColormap(pixt); pixcmapWriteStream(stderr, cmap); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixDestroy(&pixt); pixt = pixThresholdTo4bpp(pixs, 11, 1); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixDestroy(&pixt); pixSaveTiled(pixs, pixa, 1, 1, 20, 8); str = "45 75 115 185"; pixt = pixThresholdGrayArb(pixs, str, 8, 0, 0, 0); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixDestroy(&pixt); str = "38 65 85 115 160 210"; pixt = pixThresholdGrayArb(pixs, str, 8, 0, 1, 1); cmap = pixGetColormap(pixt); pixcmapWriteStream(stderr, cmap); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixDestroy(&pixt); str = "38 60 75 90 110 130 155 185 208 239"; pixt = pixThresholdGrayArb(pixs, str, 8, 0, 0, 0); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixDestroy(&pixt); pixSaveTiled(pixs, pixa, 1, 1, 20, 8); str = "45 75 115 185"; pixt = pixThresholdGrayArb(pixs, str, 0, 1, 0, 1); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixDestroy(&pixt); str = "38 65 85 115 160 210"; pixt = pixThresholdGrayArb(pixs, str, 0, 1, 0, 1); cmap = pixGetColormap(pixt); pixcmapWriteStream(stderr, cmap); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixDestroy(&pixt); str = "38 60 75 90 110 130 155 185 208 239"; pixt = pixThresholdGrayArb(pixs, str, 4, 1, 0, 1); pixSaveTiled(pixt, pixa, 1, 0, 20, 0); pixDestroy(&pixt); pixd3 = pixaDisplay(pixa, 0, 0); pixDisplay(pixd3, 100, 100); pixWrite("/tmp/junkpixd3.jpg", pixd3, IFF_JFIF_JPEG); pixDestroy(&pixd3); pixaDestroy(&pixa); pixDestroy(&pixs); return 0; }