int main(int argc, char **argv) { l_int32 w, h, x, y, i, n; l_float32 *vc; PIX *pix1, *pix2, *pix3, *pix4, *pix5; PIXA *pixas, *pixa; L_REGPARAMS *rp; if (regTestSetup(argc, argv, &rp)) return 1; pixas = pixaCreate(11); for (i = 0; i < 10; i++) { /* this preserves any alpha */ pix1 = pixRead(fnames[i]); pix2 = pixScaleBySamplingToSize(pix1, 250, 150); pixaAddPix(pixas, pix2, L_INSERT); pixDestroy(&pix1); } /* Add a transparent grid over the rgb image */ pix1 = pixaGetPix(pixas, 8, L_COPY); pixGetDimensions(pix1, &w, &h, NULL); pix2 = pixCreate(w, h, 1); for (i = 0; i < 5; i++) { y = h * (i + 1) / 6; pixRenderLine(pix2, 0, y, w, y, 3, L_SET_PIXELS); } for (i = 0; i < 7; i++) { x = w * (i + 1) / 8; pixRenderLine(pix2, x, 0, x, h, 3, L_SET_PIXELS); } pix3 = pixConvertTo8(pix2, 0); /* 1 --> 0 ==> transparent */ pixSetRGBComponent(pix1, pix3, L_ALPHA_CHANNEL); pixaAddPix(pixas, pix1, L_INSERT); n = pixaGetCount(pixas); pixDestroy(&pix2); pixDestroy(&pix3); #if DO_ALL /* Display with and without removing alpha with white bg */ pix1 = pixaDisplayTiledInRows(pixas, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 0 */ pixDisplayWithTitle(pix1, 0, 0, NULL, rp->display); pixDestroy(&pix1); pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixRemoveAlpha(pix1); pixaAddPix(pixa, pix2, L_INSERT); pixDestroy(&pix1); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 1 */ pixDisplayWithTitle(pix1, 200, 0, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Setting to gray */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pixSetAllGray(pix1, 170); pix2 = pixRemoveAlpha(pix1); pixaAddPix(pixa, pix2, L_INSERT); pixDestroy(&pix1); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 2 */ pixDisplayWithTitle(pix1, 400, 0, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* General scaling */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixScaleToSize(pix1, 350, 650); pix3 = pixScaleToSize(pix2, 200, 200); pix4 = pixRemoveAlpha(pix3); pixaAddPix(pixa, pix4, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 3 */ pixDisplayWithTitle(pix1, 600, 0, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Scaling by sampling */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixScaleBySamplingToSize(pix1, 350, 650); pix3 = pixScaleBySamplingToSize(pix2, 200, 200); pix4 = pixRemoveAlpha(pix3); pixaAddPix(pixa, pix4, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 4 */ pixDisplayWithTitle(pix1, 800, 0, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Rotation by area mapping; no embedding */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixRotate(pix1, 0.25, L_ROTATE_AREA_MAP, L_BRING_IN_WHITE, 0, 0); pix3 = pixRotate(pix2, -0.35, L_ROTATE_AREA_MAP, L_BRING_IN_WHITE, 0, 0); pix4 = pixRemoveAlpha(pix3); pixaAddPix(pixa, pix4, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 5 */ pixDisplayWithTitle(pix1, 1000, 0, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Rotation by area mapping; with embedding */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixRotate(pix1, 0.25, L_ROTATE_AREA_MAP, L_BRING_IN_WHITE, 250, 150); pix3 = pixRotate(pix2, -0.35, L_ROTATE_AREA_MAP, L_BRING_IN_WHITE, 250, 150); pix4 = pixRemoveBorderToSize(pix3, 250, 150); pix5 = pixRemoveAlpha(pix4); pixaAddPix(pixa, pix5, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); pixDestroy(&pix4); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 6 */ pixDisplayWithTitle(pix1, 0, 400, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Rotation by 3-shear; no embedding */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixRotate(pix1, 0.25, L_ROTATE_SHEAR, L_BRING_IN_WHITE, 0, 0); pix3 = pixRotate(pix2, -0.35, L_ROTATE_SHEAR, L_BRING_IN_WHITE, 0, 0); pix4 = pixRemoveAlpha(pix3); pixaAddPix(pixa, pix4, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 7 */ pixDisplayWithTitle(pix1, 200, 400, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Rotation by 3-shear; with embedding */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixRotate(pix1, 0.25, L_ROTATE_SHEAR, L_BRING_IN_WHITE, 250, 150); pix3 = pixRotate(pix2, -0.35, L_ROTATE_SHEAR, L_BRING_IN_WHITE, 250, 150); pix4 = pixRemoveBorderToSize(pix3, 250, 150); pix5 = pixRemoveAlpha(pix4); pixaAddPix(pixa, pix5, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); pixDestroy(&pix4); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 8 */ pixDisplayWithTitle(pix1, 400, 400, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Rotation by 2-shear about the center */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pixGetDimensions(pix1, &w, &h, NULL); pix2 = pixRotate2Shear(pix1, w / 2, h / 2, 0.25, L_BRING_IN_WHITE); pix3 = pixRotate2Shear(pix2, w / 2, h / 2, -0.35, L_BRING_IN_WHITE); pix4 = pixRemoveAlpha(pix3); pixaAddPix(pixa, pix4, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 9 */ pixDisplayWithTitle(pix1, 600, 400, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Rotation by sampling; no embedding */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixRotate(pix1, 0.25, L_ROTATE_SAMPLING, L_BRING_IN_WHITE, 0, 0); pix3 = pixRotate(pix2, -0.35, L_ROTATE_SAMPLING, L_BRING_IN_WHITE, 0, 0); pix4 = pixRemoveAlpha(pix3); pixaAddPix(pixa, pix4, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 10 */ pixDisplayWithTitle(pix1, 800, 400, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Rotation by sampling; with embedding */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixRotate(pix1, 0.25, L_ROTATE_SAMPLING, L_BRING_IN_WHITE, 250, 150); pix3 = pixRotate(pix2, -0.35, L_ROTATE_SAMPLING, L_BRING_IN_WHITE, 250, 150); pix4 = pixRemoveBorderToSize(pix3, 250, 150); pix5 = pixRemoveAlpha(pix4); pixaAddPix(pixa, pix5, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); pixDestroy(&pix4); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 11 */ pixDisplayWithTitle(pix1, 1000, 400, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Rotation by area mapping at corner */ pixa = pixaCreate(n); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixRotateAMCorner(pix1, 0.25, L_BRING_IN_WHITE); pix3 = pixRotateAMCorner(pix2, -0.35, L_BRING_IN_WHITE); pix4 = pixRemoveAlpha(pix3); pixaAddPix(pixa, pix4, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 12 */ pixDisplayWithTitle(pix1, 0, 800, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); #endif #if DO_ALL /* Affine transform by interpolation */ pixa = pixaCreate(n); vc = Generate3PtTransformVector(); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixAffine(pix1, vc, L_BRING_IN_WHITE); /* pix2 = pixAffineSampled(pix1, vc, L_BRING_IN_WHITE); */ pix3 = pixRemoveAlpha(pix2); pixaAddPix(pixa, pix3, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 13 */ pixDisplayWithTitle(pix1, 200, 800, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); lept_free(vc); #endif #if DO_ALL /* Projective transform by sampling */ pixa = pixaCreate(n); vc = Generate4PtTransformVector(PROJECTIVE); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixProjectiveSampled(pix1, vc, L_BRING_IN_WHITE); pix3 = pixRemoveAlpha(pix2); pixaAddPix(pixa, pix3, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 14 */ pixDisplayWithTitle(pix1, 400, 800, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); lept_free(vc); #endif #if DO_ALL /* Projective transform by interpolation */ pixa = pixaCreate(n); vc = Generate4PtTransformVector(PROJECTIVE); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixProjective(pix1, vc, L_BRING_IN_WHITE); pix3 = pixRemoveAlpha(pix2); pixaAddPix(pixa, pix3, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 15 */ pixDisplayWithTitle(pix1, 600, 800, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); lept_free(vc); #endif #if DO_ALL /* Bilinear transform by interpolation */ pixa = pixaCreate(n); vc = Generate4PtTransformVector(BILINEAR); for (i = 0; i < n; i++) { pix1 = pixaGetPix(pixas, i, L_COPY); pix2 = pixBilinear(pix1, vc, L_BRING_IN_WHITE); pix3 = pixRemoveAlpha(pix2); pixaAddPix(pixa, pix3, L_INSERT); pixDestroy(&pix1); pixDestroy(&pix2); } pix1 = pixaDisplayTiledInRows(pixa, 32, 1200, 1.0, 0, 25, 2); regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 16 */ pixDisplayWithTitle(pix1, 800, 800, NULL, rp->display); pixDestroy(&pix1); pixaDestroy(&pixa); lept_free(vc); #endif pixaDestroy(&pixas); return regTestCleanup(rp); }
int main(int argc, char **argv) { l_int32 i, w, h, d, rotflag; PIX *pixs, *pixt, *pixd; l_float32 angle, deg2rad, pops, ang; char *filein, *fileout; static char mainName[] = "rotatetest1"; if (argc != 4) return ERROR_INT(" Syntax: rotatetest1 filein angle fileout", mainName, 1); filein = argv[1]; angle = atof(argv[2]); fileout = argv[3]; deg2rad = 3.1415926535 / 180.; if ((pixs = pixRead(filein)) == NULL) return ERROR_INT("pix not made", mainName, 1); if (pixGetDepth(pixs) == 1) { pixt = pixScaleToGray3(pixs); pixDestroy(&pixs); pixs = pixAddBorderGeneral(pixt, 1, 0, 1, 0, 255); pixDestroy(&pixt); } pixGetDimensions(pixs, &w, &h, &d); fprintf(stderr, "w = %d, h = %d\n", w, h); #if 0 /* repertory of rotation operations to choose from */ pixd = pixRotateAM(pixs, deg2rad * angle, L_BRING_IN_WHITE); pixd = pixRotateAMColor(pixs, deg2rad * angle, 0xffffff00); pixd = pixRotateAMColorFast(pixs, deg2rad * angle, 255); pixd = pixRotateAMCorner(pixs, deg2rad * angle, L_BRING_IN_WHITE); pixd = pixRotateShear(pixs, w /2, h / 2, deg2rad * angle, L_BRING_IN_WHITE); pixd = pixRotate3Shear(pixs, w /2, h / 2, deg2rad * angle, L_BRING_IN_WHITE); pixRotateShearIP(pixs, w / 2, h / 2, deg2rad * angle); pixd = pixs; #endif #if 0 /* timing of shear rotation */ for (i = 0; i < NITERS; i++) { pixd = pixRotateShear(pixs, (i * w) / NITERS, (i * h) / NITERS, deg2rad * angle, L_BRING_IN_WHITE); pixDisplay(pixd, 100 + 20 * i, 100 + 20 * i); pixDestroy(&pixd); } #endif #if 0 /* timing of in-place shear rotation */ for (i = 0; i < NITERS; i++) { pixRotateShearIP(pixs, w/2, h/2, deg2rad * angle, L_BRING_IN_WHITE); /* pixRotateShearCenterIP(pixs, deg2rad * angle, L_BRING_IN_WHITE); */ pixDisplay(pixs, 100 + 20 * i, 100 + 20 * i); } pixd = pixs; if (pixGetDepth(pixd) == 1) pixWrite(fileout, pixd, IFF_PNG); else pixWrite(fileout, pixd, IFF_JFIF_JPEG); pixDestroy(&pixs); #endif #if 0 /* timing of various rotation operations (choose) */ startTimer(); w = pixGetWidth(pixs); h = pixGetHeight(pixs); for (i = 0; i < NTIMES; i++) { pixd = pixRotateShearCenter(pixs, deg2rad * angle, L_BRING_IN_WHITE); pixDestroy(&pixd); } pops = (l_float32)(w * h * NTIMES / 1000000.) / stopTimer(); fprintf(stderr, "vers. 1, mpops: %f\n", pops); startTimer(); w = pixGetWidth(pixs); h = pixGetHeight(pixs); for (i = 0; i < NTIMES; i++) { pixRotateShearIP(pixs, w/2, h/2, deg2rad * angle, L_BRING_IN_WHITE); } pops = (l_float32)(w * h * NTIMES / 1000000.) / stopTimer(); fprintf(stderr, "shear, mpops: %f\n", pops); pixWrite(fileout, pixs, IFF_PNG); for (i = 0; i < NTIMES; i++) { pixRotateShearIP(pixs, w/2, h/2, -deg2rad * angle, L_BRING_IN_WHITE); } pixWrite("/usr/tmp/junkout", pixs, IFF_PNG); #endif #if 0 /* area-mapping rotation operations */ pixd = pixRotateAM(pixs, deg2rad * angle, L_BRING_IN_WHITE); /* pixd = pixRotateAMColorFast(pixs, deg2rad * angle, 255); */ if (pixGetDepth(pixd) == 1) pixWrite(fileout, pixd, IFF_PNG); else pixWrite(fileout, pixd, IFF_JFIF_JPEG); #endif #if 0 /* compare the standard area-map color rotation with * the fast area-map color rotation, on a pixel basis */ { PIX *pix1, *pix2; NUMA *nar, *nag, *nab, *naseq; GPLOT *gplot; startTimer(); pix1 = pixRotateAMColor(pixs, 0.12, 0xffffff00); fprintf(stderr, " standard color rotate: %7.2f sec\n", stopTimer()); pixWrite("junkcolor1", pix1, IFF_JFIF_JPEG); startTimer(); pix2 = pixRotateAMColorFast(pixs, 0.12, 0xffffff00); fprintf(stderr, " fast color rotate: %7.2f sec\n", stopTimer()); pixWrite("junkcolor2", pix2, IFF_JFIF_JPEG); pixd = pixAbsDifference(pix1, pix2); pixGetColorHistogram(pixd, 1, &nar, &nag, &nab); naseq = numaMakeSequence(0., 1., 256); gplot = gplotCreate("junk_absdiff", GPLOT_X11, "Number vs diff", "diff", "number"); gplotAddPlot(gplot, naseq, nar, GPLOT_POINTS, "red"); gplotAddPlot(gplot, naseq, nag, GPLOT_POINTS, "green"); gplotAddPlot(gplot, naseq, nab, GPLOT_POINTS, "blue"); gplotMakeOutput(gplot); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pixd); numaDestroy(&nar); numaDestroy(&nag); numaDestroy(&nab); numaDestroy(&naseq); gplotDestroy(&gplot); } #endif /* Do a succession of 180 7-degree rotations in a cw * direction, and unwind the result with another set in * a ccw direction. Although there is a considerable amount * of distortion after successive rotations, after all * 360 rotations, the resulting image is restored to * its original pristine condition! */ #if 1 rotflag = L_ROTATE_AREA_MAP; /* rotflag = L_ROTATE_SHEAR; */ /* rotflag = L_ROTATE_SAMPLING; */ ang = 7.0 * deg2rad; pixGetDimensions(pixs, &w, &h, NULL); pixd = pixRotate(pixs, ang, rotflag, L_BRING_IN_WHITE, w, h); pixWrite("junkrot7", pixd, IFF_PNG); for (i = 1; i < 180; i++) { pixs = pixd; pixd = pixRotate(pixs, ang, rotflag, L_BRING_IN_WHITE, w, h); if ((i % 30) == 0) pixDisplay(pixd, 600, 0); pixDestroy(&pixs); } pixWrite("junkspin", pixd, IFF_PNG); pixDisplay(pixd, 0, 0); for (i = 0; i < 180; i++) { pixs = pixd; pixd = pixRotate(pixs, -ang, rotflag, L_BRING_IN_WHITE, w, h); if (i && (i % 30) == 0) pixDisplay(pixd, 600, 500); pixDestroy(&pixs); } pixWrite("junkunspin", pixd, IFF_PNG); pixDisplay(pixd, 0, 500); pixDestroy(&pixd); #endif return 0; }
static void RotateTest(PIX *pixs, l_float32 scale, L_REGPARAMS *rp) { l_int32 w, h, d, i, outformat; PIX *pixt, *pixd; PIXA *pixa; pixa = pixaCreate(0); pixGetDimensions(pixs, &w, &h, &d); outformat = (d == 8 || d == 32) ? IFF_JFIF_JPEG : IFF_PNG; pixd = pixRotate(pixs, ANGLE1, L_ROTATE_SHEAR, L_BRING_IN_WHITE, w, h); for (i = 1; i < NTIMES; i++) { if ((i % MODSIZE) == 0) { if (i == MODSIZE) { pixSaveTiled(pixd, pixa, scale, 1, 20, 32); regTestWritePixAndCheck(rp, pixd, outformat); } else { pixSaveTiled(pixd, pixa, scale, 0, 20, 32); regTestWritePixAndCheck(rp, pixd, outformat); } } pixt = pixRotate(pixd, ANGLE1, L_ROTATE_SHEAR, L_BRING_IN_WHITE, w, h); pixDestroy(&pixd); pixd = pixt; } pixDestroy(&pixd); pixd = pixRotate(pixs, ANGLE1, L_ROTATE_SAMPLING, L_BRING_IN_WHITE, w, h); for (i = 1; i < NTIMES; i++) { if ((i % MODSIZE) == 0) { if (i == MODSIZE) { pixSaveTiled(pixd, pixa, scale, 1, 20, 32); regTestWritePixAndCheck(rp, pixd, outformat); } else { pixSaveTiled(pixd, pixa, scale, 0, 20, 32); regTestWritePixAndCheck(rp, pixd, outformat); } } pixt = pixRotate(pixd, ANGLE1, L_ROTATE_SAMPLING, L_BRING_IN_WHITE, w, h); pixDestroy(&pixd); pixd = pixt; } pixDestroy(&pixd); pixd = pixRotate(pixs, ANGLE1, L_ROTATE_AREA_MAP, L_BRING_IN_WHITE, w, h); for (i = 1; i < NTIMES; i++) { if ((i % MODSIZE) == 0) { if (i == MODSIZE) { pixSaveTiled(pixd, pixa, scale, 1, 20, 32); regTestWritePixAndCheck(rp, pixd, outformat); } else { pixSaveTiled(pixd, pixa, scale, 0, 20, 32); regTestWritePixAndCheck(rp, pixd, outformat); } } pixt = pixRotate(pixd, ANGLE1, L_ROTATE_AREA_MAP, L_BRING_IN_WHITE, w, h); pixDestroy(&pixd); pixd = pixt; } pixDestroy(&pixd); pixd = pixRotateAMCorner(pixs, ANGLE2, L_BRING_IN_WHITE); for (i = 1; i < NTIMES; i++) { if ((i % MODSIZE) == 0) { if (i == MODSIZE) { pixSaveTiled(pixd, pixa, scale, 1, 20, 32); regTestWritePixAndCheck(rp, pixd, outformat); } else { pixSaveTiled(pixd, pixa, scale, 0, 20, 32); regTestWritePixAndCheck(rp, pixd, outformat); } } pixt = pixRotateAMCorner(pixd, ANGLE2, L_BRING_IN_WHITE); pixDestroy(&pixd); pixd = pixt; } pixDestroy(&pixd); if (d == 32) { pixd = pixRotateAMColorFast(pixs, ANGLE1, 0xb0ffb000); for (i = 1; i < NTIMES; i++) { if ((i % MODSIZE) == 0) { if (i == MODSIZE) { pixSaveTiled(pixd, pixa, scale, 1, 20, 32); regTestWritePixAndCheck(rp, pixd, outformat); } else { pixSaveTiled(pixd, pixa, scale, 0, 20, 32); regTestWritePixAndCheck(rp, pixd, outformat); } } pixt = pixRotateAMColorFast(pixd, ANGLE1, 0xb0ffb000); pixDestroy(&pixd); pixd = pixt; } } pixDestroy(&pixd); pixd = pixaDisplay(pixa, 0, 0); pixDisplayWithTitle(pixd, 100, 100, NULL, rp->display); pixDestroy(&pixd); pixaDestroy(&pixa); return; }
main(int argc, char **argv) { l_int32 i; l_float32 pi, scale, angle; PIX *pixc, *pixm, *pix1, *pix2, *pix3; PIXA *pixa; PTA *pta1, *pta2, *pta3, *pta4; static char mainName[] = "smallpix_reg"; /* Make a small test image, the hard way! */ pi = 3.1415926535; pixc = pixCreate(9, 9, 32); pixm = pixCreate(9, 9, 1); pta1 = generatePtaLineFromPt(4, 4, 3.1, 0.0); pta2 = generatePtaLineFromPt(4, 4, 3.1, 0.5 * pi); pta3 = generatePtaLineFromPt(4, 4, 3.1, pi); pta4 = generatePtaLineFromPt(4, 4, 3.1, 1.5 * pi); ptaJoin(pta1, pta2, 0, 0); ptaJoin(pta1, pta3, 0, 0); ptaJoin(pta1, pta4, 0, 0); pixRenderPta(pixm, pta1, L_SET_PIXELS); pixPaintThroughMask(pixc, pixm, 0, 0, 0x00ff0000); ptaDestroy(&pta1); ptaDestroy(&pta2); ptaDestroy(&pta3); ptaDestroy(&pta4); pixDestroy(&pixm); /* Results differ for scaleSmoothLow() w/ and w/out + 0.5. * Neither is properly symmetric (with symm pattern on odd-sized * pix, because the smoothing is destroying the symmetry. */ pixa = pixaCreate(11); pix1 = pixExpandReplicate(pixc, 2); for (i = 0; i < 11; i++) { scale = 0.30 + 0.035 * (l_float32)i; pix2 = pixScaleSmooth(pix1, scale, scale); pix3 = pixExpandReplicate(pix2, 6); pixSaveTiled(pix3, pixa, 1, (i == 0), 20, 32); pixDestroy(&pix2); pixDestroy(&pix3); } pixDestroy(&pix1); DisplayPix(&pixa, 100, 100, NULL); /* Results same for pixScaleAreaMap w/ and w/out + 0.5 */ pixa = pixaCreate(11); pix1 = pixExpandReplicate(pixc, 2); for (i = 0; i < 11; i++) { scale = 0.30 + 0.035 * (l_float32)i; pix2 = pixScaleAreaMap(pix1, scale, scale); pix3 = pixExpandReplicate(pix2, 6); pixSaveTiled(pix3, pixa, 1, (i == 0), 20, 32); pixDestroy(&pix2); pixDestroy(&pix3); } pixDestroy(&pix1); DisplayPix(&pixa, 100, 200, NULL); /* Results better for pixScaleBySampling with + 0.5, for small, * odd-dimension pix. */ pixa = pixaCreate(11); pix1 = pixExpandReplicate(pixc, 2); for (i = 0; i < 11; i++) { scale = 0.30 + 0.035 * (l_float32)i; pix2 = pixScaleBySampling(pix1, scale, scale); pix3 = pixExpandReplicate(pix2, 6); pixSaveTiled(pix3, pixa, 1, (i == 0), 20, 32); pixDestroy(&pix2); pixDestroy(&pix3); } pixDestroy(&pix1); DisplayPix(&pixa, 100, 300, NULL); /* Results same for pixRotateAM w/ and w/out + 0.5 */ pixa = pixaCreate(11); pix1 = pixExpandReplicate(pixc, 1); for (i = 0; i < 11; i++) { angle = 0.10 + 0.05 * (l_float32)i; pix2 = pixRotateAM(pix1, angle, L_BRING_IN_BLACK); pix3 = pixExpandReplicate(pix2, 8); pixSaveTiled(pix3, pixa, 1, (i == 0), 20, 32); pixDestroy(&pix2); pixDestroy(&pix3); } pixDestroy(&pix1); DisplayPix(&pixa, 100, 400, NULL); /* If the size is odd, we express the center exactly, and the * results are better for pixRotateBySampling() w/out 0.5 * However, if the size is even, the center value is not * exact, and if we choose it 0.5 smaller than the actual * center, we get symmetrical results with +0.5. * So we choose not to include + 0.5. */ pixa = pixaCreate(11); pix1 = pixExpandReplicate(pixc, 1); for (i = 0; i < 11; i++) { angle = 0.10 + 0.05 * (l_float32)i; pix2 = pixRotateBySampling(pix1, 4, 4, angle, L_BRING_IN_BLACK); pix3 = pixExpandReplicate(pix2, 8); pixSaveTiled(pix3, pixa, 1, (i == 0), 20, 32); pixDestroy(&pix2); pixDestroy(&pix3); } pixDestroy(&pix1); DisplayPix(&pixa, 100, 500, NULL); /* Results same for pixRotateAMCorner w/ and w/out + 0.5 */ pixa = pixaCreate(11); pix1 = pixExpandReplicate(pixc, 1); for (i = 0; i < 11; i++) { angle = 0.10 + 0.05 * (l_float32)i; pix2 = pixRotateAMCorner(pix1, angle, L_BRING_IN_BLACK); pix3 = pixExpandReplicate(pix2, 8); pixSaveTiled(pix3, pixa, 1, (i == 0), 20, 32); pixDestroy(&pix2); pixDestroy(&pix3); } pixDestroy(&pix1); DisplayPix(&pixa, 100, 600, NULL); /* Results better for pixRotateAMColorFast without + 0.5 */ pixa = pixaCreate(11); pix1 = pixExpandReplicate(pixc, 1); for (i = 0; i < 11; i++) { angle = 0.10 + 0.05 * (l_float32)i; pix2 = pixRotateAMColorFast(pix1, angle, 0); pix3 = pixExpandReplicate(pix2, 8); pixSaveTiled(pix3, pixa, 1, (i == 0), 20, 32); pixDestroy(&pix2); pixDestroy(&pix3); } pixDestroy(&pix1); DisplayPix(&pixa, 100, 700, NULL); /* Results slightly better for pixScaleColorLI() w/out + 0.5 */ pixa = pixaCreate(11); pix1 = pixExpandReplicate(pixc, 1); for (i = 0; i < 11; i++) { scale = 1.0 + 0.2 * (l_float32)i; pix2 = pixScaleColorLI(pix1, scale, scale); pix3 = pixExpandReplicate(pix2, 4); pixSaveTiled(pix3, pixa, 1, (i == 0), 20, 32); pixDestroy(&pix2); pixDestroy(&pix3); } pixDestroy(&pix1); DisplayPix(&pixa, 100, 800, NULL); /* Results slightly better for pixScaleColorLI() w/out + 0.5 */ pixa = pixaCreate(11); pix1 = pixExpandReplicate(pixc, 1); for (i = 0; i < 11; i++) { scale = 1.0 + 0.2 * (l_float32)i; pix2 = pixScaleLI(pix1, scale, scale); pix3 = pixExpandReplicate(pix2, 4); pixSaveTiled(pix3, pixa, 1, (i == 0), 20, 32); pixDestroy(&pix2); pixDestroy(&pix3); } pixDestroy(&pix1); DisplayPix(&pixa, 100, 940, NULL); pixDestroy(&pixc); return 0; }