main(int argc, char **argv) { char buffer[512]; char *tempfile1, *tempfile2; l_uint8 *data; l_int32 i, j, w, h, seq, ret, same; size_t nbytes; const char *title; BOX *box; BOXA *boxa1, *boxa2; L_BYTEA *ba; L_PDF_DATA *lpd; PIX *pix1, *pix2, *pix3, *pix4, *pix5, *pix6; PIX *pixs, *pixt, *pixg, *pixgc, *pixc; static char mainName[] = "pdfiotest"; if (argc != 1) exit(ERROR_INT("syntax: pdfiotest", mainName, 1)); l_pdfSetDateAndVersion(0); #if 1 /* --------------- Single image tests ------------------- */ fprintf(stderr, "\n*** Writing single images as pdf files\n"); convertToPdf("weasel2.4c.png", L_FLATE_ENCODE, 0, "/tmp/pdffile01.pdf", 0, 0, 72, NULL, 0, "weasel2.4c.png"); convertToPdf("test24.jpg", L_JPEG_ENCODE, 0, "/tmp/pdffile02.pdf", 0, 0, 72, NULL, 0, "test24.jpg"); convertToPdf("feyn.tif", L_G4_ENCODE, 0, "/tmp/pdffile03.pdf", 0, 0, 300, NULL, 0, "feyn.tif"); pixs = pixRead("feyn.tif"); pixConvertToPdf(pixs, L_G4_ENCODE, 0, "/tmp/pdffile04.pdf", 0, 0, 300, NULL, 0, "feyn.tif"); pixDestroy(&pixs); pixs = pixRead("test24.jpg"); pixConvertToPdf(pixs, L_JPEG_ENCODE, 5, "/tmp/pdffile05.pdf", 0, 0, 72, NULL, 0, "test24.jpg"); pixDestroy(&pixs); pixs = pixRead("feyn.tif"); pixt = pixScaleToGray2(pixs); pixWrite("junkfeyn8.png", pixt, IFF_PNG); convertToPdf("junkfeyn8.png", L_JPEG_ENCODE, 0, "/tmp/pdffile06.pdf", 0, 0, 150, NULL, 0, "junkfeyn8.png"); pixDestroy(&pixs); pixDestroy(&pixt); convertToPdf("weasel4.16g.png", L_FLATE_ENCODE, 0, "/tmp/pdffile07.pdf", 0, 0, 30, NULL, 0, "weasel4.16g.png"); pixs = pixRead("test24.jpg"); pixg = pixConvertTo8(pixs, 0); box = boxCreate(100, 100, 100, 100); pixc = pixClipRectangle(pixs, box, NULL); pixgc = pixClipRectangle(pixg, box, NULL); pixWrite("junkpix32.jpg", pixc, IFF_JFIF_JPEG); pixWrite("junkpix8.jpg", pixgc, IFF_JFIF_JPEG); convertToPdf("junkpix32.jpg", L_FLATE_ENCODE, 0, "/tmp/pdffile08.pdf", 0, 0, 72, NULL, 0, "junkpix32.jpg"); convertToPdf("junkpix8.jpg", L_FLATE_ENCODE, 0, "/tmp/pdffile09.pdf", 0, 0, 72, NULL, 0, "junkpix8.jpg"); pixDestroy(&pixs); pixDestroy(&pixg); pixDestroy(&pixc); pixDestroy(&pixgc); boxDestroy(&box); #endif #if 1 /* --------------- Multiple image tests ------------------- */ fprintf(stderr, "\n*** Writing multiple images as single page pdf files\n"); pix1 = pixRead("feyn-fract.tif"); pix2 = pixRead("weasel8.240c.png"); /* l_pdfSetDateAndVersion(0); */ /* First, write the 1 bpp image through the mask onto the weasels */ for (i = 0; i < 5; i++) { for (j = 0; j < 10; j++) { seq = (i == 0 && j == 0) ? L_FIRST_IMAGE : L_NEXT_IMAGE; title = (i == 0 && j == 0) ? "feyn-fract.tif" : NULL; pixConvertToPdf(pix2, L_FLATE_ENCODE, 0, NULL, 100 * j, 100 * i, 70, &lpd, seq, title); } } pixConvertToPdf(pix1, L_G4_ENCODE, 0, "/tmp/pdffile10.pdf", 0, 0, 80, &lpd, L_LAST_IMAGE, NULL); /* Now, write the 1 bpp image over the weasels */ l_pdfSetG4ImageMask(0); for (i = 0; i < 5; i++) { for (j = 0; j < 10; j++) { seq = (i == 0 && j == 0) ? L_FIRST_IMAGE : L_NEXT_IMAGE; title = (i == 0 && j == 0) ? "feyn-fract.tif" : NULL; pixConvertToPdf(pix2, L_FLATE_ENCODE, 0, NULL, 100 * j, 100 * i, 70, &lpd, seq, title); } } pixConvertToPdf(pix1, L_G4_ENCODE, 0, "/tmp/pdffile11.pdf", 0, 0, 80, &lpd, L_LAST_IMAGE, NULL); l_pdfSetG4ImageMask(1); pixDestroy(&pix1); pixDestroy(&pix2); #endif #if 1 /* -------- pdf convert segmented with no image regions -------- */ fprintf(stderr, "\n*** Writing segmented images without image regions\n"); pix1 = pixRead("rabi.png"); pix2 = pixScaleToGray2(pix1); pixWrite("/tmp/rabi8.jpg", pix2, IFF_JFIF_JPEG); pix3 = pixThresholdTo4bpp(pix2, 16, 1); pixWrite("/tmp/rabi4.png", pix3, IFF_PNG); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); /* 1 bpp input */ convertToPdfSegmented("rabi.png", 300, L_G4_ENCODE, 128, NULL, 0, 0, "/tmp/pdffile12.pdf"); convertToPdfSegmented("rabi.png", 300, L_JPEG_ENCODE, 128, NULL, 0, 0, "/tmp/pdffile13.pdf"); convertToPdfSegmented("rabi.png", 300, L_FLATE_ENCODE, 128, NULL, 0, 0, "/tmp/pdffile14.pdf"); /* 8 bpp input, no cmap */ convertToPdfSegmented("/tmp/rabi8.jpg", 150, L_G4_ENCODE, 128, NULL, 0, 0, "/tmp/pdffile15.pdf"); convertToPdfSegmented("/tmp/rabi8.jpg", 150, L_JPEG_ENCODE, 128, NULL, 0, 0, "/tmp/pdffile16.pdf"); convertToPdfSegmented("/tmp/rabi8.jpg", 150, L_FLATE_ENCODE, 128, NULL, 0, 0, "/tmp/pdffile17.pdf"); /* 4 bpp input, cmap */ convertToPdfSegmented("/tmp/rabi4.png", 150, L_G4_ENCODE, 128, NULL, 0, 0, "/tmp/pdffile18.pdf"); convertToPdfSegmented("/tmp/rabi4.png", 150, L_JPEG_ENCODE, 128, NULL, 0, 0, "/tmp/pdffile19.pdf"); convertToPdfSegmented("/tmp/rabi4.png", 150, L_FLATE_ENCODE, 128, NULL, 0, 0, "/tmp/pdffile20.pdf"); #endif #if 1 /* ---------- pdf convert segmented with image regions ---------- */ fprintf(stderr, "\n*** Writing segmented images with image regions\n"); /* Get the image region(s) for rabi.png. There are two * small bogus regions at the top, but we'll keep them for * the demonstration. */ pix1 = pixRead("rabi.png"); pixSetResolution(pix1, 300, 300); pixGetDimensions(pix1, &w, &h, NULL); pix2 = pixGenHalftoneMask(pix1, NULL, NULL, 0); pix3 = pixMorphSequence(pix2, "c20.1 + c1.20", 0); boxa1 = pixConnComp(pix3, NULL, 8); boxa2 = boxaTransform(boxa1, 0, 0, 0.5, 0.5); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); /* 1 bpp input */ convertToPdfSegmented("rabi.png", 300, L_G4_ENCODE, 128, boxa1, 0, 0.25, "/tmp/pdffile21.pdf"); convertToPdfSegmented("rabi.png", 300, L_JPEG_ENCODE, 128, boxa1, 0, 0.25, "/tmp/pdffile22.pdf"); convertToPdfSegmented("rabi.png", 300, L_FLATE_ENCODE, 128, boxa1, 0, 0.25, "/tmp/pdffile23.pdf"); /* 8 bpp input, no cmap */ convertToPdfSegmented("/tmp/rabi8.jpg", 150, L_G4_ENCODE, 128, boxa2, 0, 0.5, "/tmp/pdffile24.pdf"); convertToPdfSegmented("/tmp/rabi8.jpg", 150, L_JPEG_ENCODE, 128, boxa2, 0, 0.5, "/tmp/pdffile25.pdf"); convertToPdfSegmented("/tmp/rabi8.jpg", 150, L_FLATE_ENCODE, 128, boxa2, 0, 0.5, "/tmp/pdffile26.pdf"); /* 4 bpp input, cmap */ convertToPdfSegmented("/tmp/rabi4.png", 150, L_G4_ENCODE, 128, boxa2, 0, 0.5, "/tmp/pdffile27.pdf"); convertToPdfSegmented("/tmp/rabi4.png", 150, L_JPEG_ENCODE, 128, boxa2, 0, 0.5, "/tmp/pdffile28.pdf"); convertToPdfSegmented("/tmp/rabi4.png", 150, L_FLATE_ENCODE, 128, boxa2, 0, 0.5, "/tmp/pdffile29.pdf"); /* 4 bpp input, cmap, data output */ data = NULL; convertToPdfDataSegmented("/tmp/rabi4.png", 150, L_G4_ENCODE, 128, boxa2, 0, 0.5, &data, &nbytes); l_binaryWrite("/tmp/pdffile30.pdf", "w", data, nbytes); lept_free(data); convertToPdfDataSegmented("/tmp/rabi4.png", 150, L_JPEG_ENCODE, 128, boxa2, 0, 0.5, &data, &nbytes); l_binaryWrite("/tmp/pdffile31.pdf", "w", data, nbytes); lept_free(data); convertToPdfDataSegmented("/tmp/rabi4.png", 150, L_FLATE_ENCODE, 128, boxa2, 0, 0.5, &data, &nbytes); l_binaryWrite("/tmp/pdffile32.pdf", "w", data, nbytes); lept_free(data); boxaDestroy(&boxa1); boxaDestroy(&boxa2); #endif #if 1 /* -------- pdf convert segmented from color image -------- */ fprintf(stderr, "\n*** Writing color segmented images\n"); pix1 = pixRead("candelabrum-11.jpg"); pix2 = pixScale(pix1, 3.0, 3.0); pixWrite("/tmp/candelabrum3.jpg", pix2, IFF_JFIF_JPEG); GetImageMask(pix2, 200, &boxa1, "/tmp/seg1.jpg"); convertToPdfSegmented("/tmp/candelabrum3.jpg", 200, L_G4_ENCODE, 100, boxa1, 0, 0.25, "/tmp/pdffile33.pdf"); convertToPdfSegmented("/tmp/candelabrum3.jpg", 200, L_JPEG_ENCODE, 100, boxa1, 0, 0.25, "/tmp/pdffile34.pdf"); convertToPdfSegmented("/tmp/candelabrum3.jpg", 200, L_FLATE_ENCODE, 100, boxa1, 0, 0.25, "/tmp/pdffile35.pdf"); pixDestroy(&pix1); pixDestroy(&pix2); boxaDestroy(&boxa1); pix1 = pixRead("lion-page.00016.jpg"); pix2 = pixScale(pix1, 3.0, 3.0); pixWrite("/tmp/lion16.jpg", pix2, IFF_JFIF_JPEG); pix3 = pixRead("lion-mask.00016.tif"); boxa1 = pixConnComp(pix3, NULL, 8); boxa2 = boxaTransform(boxa1, 0, 0, 3.0, 3.0); convertToPdfSegmented("/tmp/lion16.jpg", 200, L_G4_ENCODE, 190, boxa2, 0, 0.5, "/tmp/pdffile36.pdf"); convertToPdfSegmented("/tmp/lion16.jpg", 200, L_JPEG_ENCODE, 190, boxa2, 0, 0.5, "/tmp/pdffile37.pdf"); convertToPdfSegmented("/tmp/lion16.jpg", 200, L_FLATE_ENCODE, 190, boxa2, 0, 0.5, "/tmp/pdffile38.pdf"); /* Quantize the non-image part and flate encode. * This is useful because it results in a smaller file than * when you flate-encode the un-quantized non-image regions. */ pix4 = pixScale(pix3, 3.0, 3.0); /* higher res mask, for combining */ pix5 = QuantizeNonImageRegion(pix2, pix4, 12); pixWrite("/tmp/lion16-quant.png", pix5, IFF_PNG); convertToPdfSegmented("/tmp/lion16-quant.png", 200, L_FLATE_ENCODE, 190, boxa2, 0, 0.5, "/tmp/pdffile39.pdf"); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); pixDestroy(&pix4); pixDestroy(&pix5); boxaDestroy(&boxa1); boxaDestroy(&boxa2); #endif #if 1 /* ------------------ Test multipage pdf generation ----------------- */ fprintf(stderr, "\n*** Writing multipage pdfs from single page pdfs\n"); /* Generate a multi-page pdf from all these files */ startTimer(); concatenatePdf("/tmp", "pdffile", "/tmp/cat_lept.pdf"); fprintf(stderr, "Time: %7.3f\n", stopTimer()); /* Put two good pdf files in a directory */ lept_mkdir("good"); lept_cp("testfile1.pdf", "/tmp/good"); lept_cp("testfile2.pdf", "/tmp/good"); concatenatePdf("/tmp/good", "file", "/tmp/good.pdf"); /* Make a version with the pdf id removed, so that it is not * recognized as a pdf */ ba = l_byteaInitFromFile("testfile2.pdf"); data = l_byteaGetData(ba, &nbytes); l_binaryWrite("testfile0.notpdf.pdf", "w", data + 10, nbytes - 10); /* Make a version with a corrupted trailer */ data[2297] = '2'; /* munge trailer object 6: change 458 --> 428 */ l_binaryWrite("testfile2.bad.pdf", "w", data, nbytes); /* Put these two bad files, along with a good file, in a directory */ lept_mkdir("bad"); lept_mv("testfile0.notpdf.pdf", "/tmp/bad"); lept_cp("testfile1.pdf", "/tmp/bad"); lept_mv("testfile2.bad.pdf", "/tmp/bad"); l_byteaDestroy(&ba); /* Run concat on the bad files. In the /tmp/bad/ directory, * the "not pdf" file should be ignored, and the corrupted pdf * file should be properly parsed, so the resulting * concatenated files should be identical. */ fprintf(stderr, "\nWe attempt to build from the bad directory\n"); concatenatePdf("/tmp/bad", "file", "/tmp/bad.pdf"); filesAreIdentical("/tmp/good.pdf", "/tmp/bad.pdf", &same); if (same) fprintf(stderr, "Fixed: files are the same\n" "Attempt succeeded\n\n"); else fprintf(stderr, "Busted: files are different\n"); /* pdftk fails because the first file is not a pdf */ fprintf(stderr, "pdftk attempts to build from the bad directory\n"); tempfile1 = genPathname("/tmp/bad", "*.pdf"); tempfile2 = genPathname("/tmp", "pdftk.bad.pdf"); snprintf(buffer, sizeof(buffer), "pdftk %s output %s", tempfile1, tempfile2); ret = system(buffer); lept_free(tempfile1); lept_free(tempfile2); fprintf(stderr, "Attempt failed\n\n"); #endif #if 1 fprintf(stderr, "\n*** pdftk writes multipage pdfs from images\n"); tempfile1 = genPathname("/tmp", "pdffile*.pdf"); tempfile2 = genPathname("/tmp", "cat_pdftk.pdf"); snprintf(buffer, sizeof(buffer), "pdftk %s output %s", tempfile1, tempfile2); ret = system(buffer); lept_free(tempfile1); lept_free(tempfile2); #endif #if 1 /* -- Test simple interface for generating multi-page pdf from images -- */ fprintf(stderr, "\n*** Writing multipage pdfs from images\n"); /* Put four image files in a directory. They will be encoded thus: * file1.png: flate (8 bpp, only 10 colors) * file2.jpg: dct (8 bpp, 256 colors because of the jpeg encoding) * file3.tif: g4 (1 bpp) * file4.jpg: dct (32 bpp) */ lept_mkdir("image"); pix1 = pixRead("feyn.tif"); pix2 = pixRead("rabi.png"); pix3 = pixScaleToGray3(pix1); pix4 = pixScaleToGray3(pix2); pix5 = pixScale(pix1, 0.33, 0.33); pix6 = pixRead("test24.jpg"); pixWrite("/tmp/image/file1.png", pix3, IFF_PNG); /* 10 colors */ pixWrite("/tmp/image/file2.jpg", pix4, IFF_JFIF_JPEG); /* 256 colors */ pixWrite("/tmp/image/file3.tif", pix5, IFF_TIFF_G4); pixWrite("/tmp/image/file4.jpg", pix6, IFF_JFIF_JPEG); startTimer(); convertFilesToPdf("/tmp/image", "file", 100, 0.8, 75, "4 file test", "/tmp/fourimages.pdf"); fprintf(stderr, "Time: %7.3f\n", stopTimer()); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); pixDestroy(&pix4); pixDestroy(&pix5); pixDestroy(&pix6); #endif return 0; }
void TestLeptCpRm(L_REGPARAMS *rp, const char *srctail, const char *newdir, const char *newtail) { char realnewdir[256], newnewdir[256]; char *realtail, *newsrc, *fname; l_int32 nfiles1, nfiles2, nfiles3; SARRAY *sa; /* Remove old version if it exists */ realtail = (newtail) ? stringNew(newtail) : stringNew(srctail); lept_rm(newdir, realtail); makeTempDirname(realnewdir, 256, newdir); if (rp->display) { fprintf(stderr, "\nInput: srctail = %s, newdir = %s, newtail = %s\n", srctail, newdir, newtail); fprintf(stderr, " realnewdir = %s, realtail = %s\n", realnewdir, realtail); } sa = getFilenamesInDirectory(realnewdir); nfiles1 = sarrayGetCount(sa); sarrayDestroy(&sa); /* Copy */ lept_cp(srctail, newdir, newtail, &fname); sa = getFilenamesInDirectory(realnewdir); nfiles2 = sarrayGetCount(sa); if (rp->display) { fprintf(stderr, " File copied to directory: %s\n", realnewdir); fprintf(stderr, " ... with this filename: %s\n", fname); fprintf(stderr, " delta files should be 1: %d\n", nfiles2 - nfiles1); } regTestCompareValues(rp, 1, nfiles2 - nfiles1, 0.0); /* '1' */ sarrayDestroy(&sa); lept_free(fname); /* Remove it */ lept_rm(newdir, realtail); sa = getFilenamesInDirectory(realnewdir); nfiles2 = sarrayGetCount(sa); if (rp->display) { fprintf(stderr, " File removed from directory: %s\n", realnewdir); fprintf(stderr, " delta files should be 0: %d\n", nfiles2 - nfiles1); } regTestCompareValues(rp, 0, nfiles2 - nfiles1, 0.0); /* '2' */ sarrayDestroy(&sa); /* Copy it again ... */ lept_cp(srctail, newdir, newtail, &fname); if (rp->display) fprintf(stderr, " File copied to: %s\n", fname); /* move it elsewhere ... */ lept_rmdir("junko"); /* clear out this directory */ lept_mkdir("junko"); newsrc = pathJoin(realnewdir, realtail); lept_mv(newsrc, "junko", NULL, &fname); if (rp->display) { fprintf(stderr, " Move file at: %s\n", newsrc); fprintf(stderr, " ... to: %s\n", fname); } lept_free(fname); lept_free(newsrc); makeTempDirname(newnewdir, 256, "junko"); if (rp->display) fprintf(stderr, " In this directory: %s\n", newnewdir); sa = getFilenamesInDirectory(newnewdir); /* check if it landed ok */ nfiles3 = sarrayGetCount(sa); if (rp->display) fprintf(stderr, " num files should be 1: %d\n", nfiles3); regTestCompareValues(rp, 1, nfiles3, 0.0); /* '3' */ sarrayDestroy(&sa); /* and verify it was removed from the original location */ sa = getFilenamesInDirectory(realnewdir); /* check if it was removed */ nfiles2 = sarrayGetCount(sa); if (rp->display) { fprintf(stderr, " In this directory: %s\n", realnewdir); fprintf(stderr, " delta files should be 0: %d\n", nfiles2 - nfiles1); } regTestCompareValues(rp, 0, nfiles2 - nfiles1, 0.0); /* '4' */ sarrayDestroy(&sa); lept_free(realtail); }
l_int32 main(int argc, char **argv) { l_int32 delx, dely, etransx, etransy, w, h, area1, area2; l_int32 *stab, *ctab; l_float32 cx1, cy1, cx2, cy2, score, fract; PIX *pix0, *pix1, *pix2, *pix3, *pix4, *pix5; L_REGPARAMS *rp; if (regTestSetup(argc, argv, &rp)) return 1; /* ------------ Test of pixBestCorrelation() --------------- */ pix0 = pixRead("harmoniam100-11.png"); pix1 = pixConvertTo1(pix0, 160); pixGetDimensions(pix1, &w, &h, NULL); /* Now make a smaller image, translated by (-32, -12) * Except for the resizing, this is equivalent to * pix2 = pixTranslate(NULL, pix1, -32, -12, L_BRING_IN_WHITE); */ pix2 = pixCreate(w - 10, h, 1); pixRasterop(pix2, 0, 0, w, h, PIX_SRC, pix1, 32, 12); /* Get the number of FG pixels and the centroid locations */ stab = makePixelSumTab8(); ctab = makePixelCentroidTab8(); pixCountPixels(pix1, &area1, stab); pixCountPixels(pix2, &area2, stab); pixCentroid(pix1, ctab, stab, &cx1, &cy1); pixCentroid(pix2, ctab, stab, &cx2, &cy2); etransx = lept_roundftoi(cx1 - cx2); etransy = lept_roundftoi(cy1 - cy2); fprintf(stderr, "delta cx = %d, delta cy = %d\n", etransx, etransy); /* Get the best correlation, searching around the translation * where the centroids coincide */ pixBestCorrelation(pix1, pix2, area1, area2, etransx, etransy, 4, stab, &delx, &dely, &score, 5); fprintf(stderr, "delx = %d, dely = %d, score = %7.4f\n", delx, dely, score); regTestCompareValues(rp, 32, delx, 0); /* 0 */ regTestCompareValues(rp, 12, dely, 0); /* 1 */ lept_mv("/tmp/lept/correl_5.png", "regout", NULL, NULL); regTestCheckFile(rp, "/tmp/regout/correl_5.png"); /* 2 */ lept_free(stab); lept_free(ctab); pixDestroy(&pix0); pixDestroy(&pix1); pixDestroy(&pix2); /* ------------ Test of pixCompareWithTranslation() ------------ */ /* Now use the pyramid to get the result. Do a translation * to remove pixels at the bottom from pix2, so that the * centroids are initially far apart. */ pix1 = pixRead("harmoniam-11.tif"); pix2 = pixTranslate(NULL, pix1, -45, 25, L_BRING_IN_WHITE); l_pdfSetDateAndVersion(0); pixCompareWithTranslation(pix1, pix2, 160, &delx, &dely, &score, 1); pixDestroy(&pix1); pixDestroy(&pix2); fprintf(stderr, "delx = %d, dely = %d\n", delx, dely); regTestCompareValues(rp, 45, delx, 0); /* 3 */ regTestCompareValues(rp, -25, dely, 0); /* 4 */ lept_mv("/tmp/lept/correl.pdf", "regout", NULL, NULL); lept_mv("/tmp/lept/compare.pdf", "regout", NULL, NULL); regTestCheckFile(rp, "/tmp/regout/compare.pdf"); /* 5 */ regTestCheckFile(rp, "/tmp/regout/correl.pdf"); /* 6 */ /* ------------ Test of pixGetPerceptualDiff() --------------- */ pix0 = pixRead("greencover.jpg"); pix1 = pixRead("redcover.jpg"); /* pre-scaled to the same size */ /* Apply directly to the color images */ pixGetPerceptualDiff(pix0, pix1, 1, 3, 20, &fract, &pix2, &pix3); fprintf(stderr, "Fraction of color pixels = %f\n", fract); regTestCompareValues(rp, 0.061252, fract, 0.01); /* 7 */ regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 8 */ regTestWritePixAndCheck(rp, pix3, IFF_TIFF_G4); /* 9 */ pixDestroy(&pix2); pixDestroy(&pix3); /* Apply to grayscale images */ pix2 = pixConvertTo8(pix0, 0); pix3 = pixConvertTo8(pix1, 0); pixGetPerceptualDiff(pix2, pix3, 1, 3, 20, &fract, &pix4, &pix5); fprintf(stderr, "Fraction of grayscale pixels = %f\n", fract); regTestCompareValues(rp, 0.046928, fract, 0.0002); /* 10 */ regTestWritePixAndCheck(rp, pix4, IFF_JFIF_JPEG); /* 11 */ regTestWritePixAndCheck(rp, pix5, IFF_TIFF_G4); /* 12 */ pixDestroy(&pix0); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); pixDestroy(&pix4); pixDestroy(&pix5); return regTestCleanup(rp); }