int main(int argc,
char **argv)
{
l_uint8 *data;
l_int32 w, h, n1, n2, n, i, minval, maxval;
l_int32 ncolors, rval, gval, bval, equal;
l_int32 *rmap, *gmap, *bmap;
l_uint32 color;
l_float32 gamma;
BOX *box;
FILE *fp;
PIX *pix1, *pix2, *pix3, *pix4, *pix5, *pix6;
PIX *pixs, *pixb, *pixg, *pixc, *pixd;
PIX *pixg2, *pixcs1, *pixcs2, *pixd1, *pixd2;
PIXA *pixa, *pixa2, *pixa3;
PIXCMAP *cmap, *cmap2;
RGBA_QUAD *cta;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
/* ------------------------ (1) ----------------------------*/
/* Blend with a white background */
pix1 = pixRead("books_logo.png");
pixDisplayWithTitle(pix1, 100, 0, NULL, rp->display);
pix2 = pixAlphaBlendUniform(pix1, 0xffffff00);
pixDisplayWithTitle(pix2, 100, 150, NULL, rp->display);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 0 */
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 1 */
/* Generate an alpha layer based on the white background */
pix3 = pixSetAlphaOverWhite(pix2);
pixSetSpp(pix3, 3);
pixWrite("/tmp/alphaops.2.png", pix3, IFF_PNG); /* without alpha */
regTestCheckFile(rp, "/tmp/alphaops.2.png"); /* 2 */
pixSetSpp(pix3, 4);
regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 3, with alpha */
pixDisplayWithTitle(pix3, 100, 300, NULL, rp->display);
/* Render on a light yellow background */
pix4 = pixAlphaBlendUniform(pix3, 0xffffe000);
regTestWritePixAndCheck(rp, pix4, IFF_PNG); /* 4 */
pixDisplayWithTitle(pix4, 100, 450, NULL, rp->display);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pix3);
pixDestroy(&pix4);
/* ------------------------ (2) ----------------------------*/
lept_rmdir("alpha");
lept_mkdir("alpha");
/* Make the transparency (alpha) layer.
* pixs is the mask. We turn it into a transparency (alpha)
* layer by converting to 8 bpp. A small convolution fuzzes
* the mask edges so that you don't see the pixels. */
pixs = pixRead("feyn-fract.tif");
pixGetDimensions(pixs, &w, &h, NULL);
pixg = pixConvert1To8(NULL, pixs, 0, 255);
pixg2 = pixBlockconvGray(pixg, NULL, 1, 1);
regTestWritePixAndCheck(rp, pixg2, IFF_JFIF_JPEG); /* 5 */
pixDisplayWithTitle(pixg2, 0, 0, "alpha", rp->display);
/* Make the viewable image.
* pixc is the image that we see where the alpha layer is
* opaque -- i.e., greater than 0. Scale it to the same
* size as the mask. To visualize what this will look like
* when displayed over a black background, create the black
* background image, pixb, and do the blending with pixcs1
* explicitly using the alpha layer pixg2. */
pixc = pixRead("tetons.jpg");
pixcs1 = pixScaleToSize(pixc, w, h);
regTestWritePixAndCheck(rp, pixcs1, IFF_JFIF_JPEG); /* 6 */
pixDisplayWithTitle(pixcs1, 300, 0, "viewable", rp->display);
pixb = pixCreateTemplate(pixcs1); /* black */
pixd1 = pixBlendWithGrayMask(pixb, pixcs1, pixg2, 0, 0);
regTestWritePixAndCheck(rp, pixd1, IFF_JFIF_JPEG); /* 7 */
pixDisplayWithTitle(pixd1, 600, 0, "alpha-blended 1", rp->display);
/* Embed the alpha layer pixg2 into the color image pixc.
* Write it out as is. Then clean pixcs1 (to 0) under the fully
* transparent part of the alpha layer, and write that result
* out as well. */
pixSetRGBComponent(pixcs1, pixg2, L_ALPHA_CHANNEL);
pixWrite("/tmp/alpha/pixcs1.png", pixcs1, IFF_PNG);
pixcs2 = pixSetUnderTransparency(pixcs1, 0, 0);
pixWrite("/tmp/alpha/pixcs2.png", pixcs2, IFF_PNG);
/* What will this look like over a black background?
* Do the blending explicitly and display. It should
* look identical to the blended result pixd1 before cleaning. */
pixd2 = pixBlendWithGrayMask(pixb, pixcs2, pixg2, 0, 0);
regTestWritePixAndCheck(rp, pixd2, IFF_JFIF_JPEG); /* 8 */
pixDisplayWithTitle(pixd2, 0, 400, "alpha blended 2", rp->display);
/* Read the two images back, ignoring the transparency layer.
* The uncleaned image will come back identical to pixcs1.
* However, the cleaned image will be black wherever
* the alpha layer was fully transparent. It will
* look the same when viewed through the alpha layer,
* but have much better compression. */
pix1 = pixRead("/tmp/alpha/pixcs1.png"); /* just pixcs1 */
pix2 = pixRead("/tmp/alpha/pixcs2.png"); /* cleaned under transparent */
n1 = nbytesInFile("/tmp/alpha/pixcs1.png");
n2 = nbytesInFile("/tmp/alpha/pixcs2.png");
fprintf(stderr, " Original: %d bytes\n Cleaned: %d bytes\n", n1, n2);
regTestWritePixAndCheck(rp, pix1, IFF_JFIF_JPEG); /* 9 */
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 10 */
pixDisplayWithTitle(pix1, 300, 400, "without alpha", rp->display);
pixDisplayWithTitle(pix2, 600, 400, "cleaned under transparent",
rp->display);
pixa = pixaCreate(0);
pixSaveTiled(pixg2, pixa, 1.0, 1, 20, 32);
pixSaveTiled(pixcs1, pixa, 1.0, 1, 20, 0);
pixSaveTiled(pix1, pixa, 1.0, 0, 20, 0);
pixSaveTiled(pixd1, pixa, 1.0, 1, 20, 0);
pixSaveTiled(pixd2, pixa, 1.0, 0, 20, 0);
pixSaveTiled(pix2, pixa, 1.0, 1, 20, 0);
pixd = pixaDisplay(pixa, 0, 0);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 11 */
pixDisplayWithTitle(pixd, 200, 200, "composite", rp->display);
pixWrite("/tmp/alpha/alpha.png", pixd, IFF_JFIF_JPEG);
pixDestroy(&pixd);
pixaDestroy(&pixa);
pixDestroy(&pixs);
pixDestroy(&pixb);
pixDestroy(&pixg);
pixDestroy(&pixg2);
pixDestroy(&pixc);
pixDestroy(&pixcs1);
pixDestroy(&pixcs2);
pixDestroy(&pixd);
pixDestroy(&pixd1);
pixDestroy(&pixd2);
pixDestroy(&pix1);
pixDestroy(&pix2);
/* ------------------------ (3) ----------------------------*/
color = 0xffffa000;
gamma = 1.0;
minval = 0;
maxval = 200;
box = boxCreate(0, 85, 600, 100);
pixa = pixaCreate(6);
pix1 = pixRead("blend-green1.jpg");
pixaAddPix(pixa, pix1, L_INSERT);
pix1 = pixRead("blend-green2.png");
pixaAddPix(pixa, pix1, L_INSERT);
pix1 = pixRead("blend-green3.png");
pixaAddPix(pixa, pix1, L_INSERT);
pix1 = pixRead("blend-orange.jpg");
pixaAddPix(pixa, pix1, L_INSERT);
pix1 = pixRead("blend-yellow.jpg");
pixaAddPix(pixa, pix1, L_INSERT);
pix1 = pixRead("blend-red.png");
pixaAddPix(pixa, pix1, L_INSERT);
n = pixaGetCount(pixa);
pixa2 = pixaCreate(n);
pixa3 = pixaCreate(n);
for (i = 0; i < n; i++) {
pix1 = pixaGetPix(pixa, i, L_CLONE);
pix2 = DoBlendTest(pix1, box, color, gamma, minval, maxval, 1);
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 12, 14, ... 22 */
pixDisplayWithTitle(pix2, 150 * i, 0, NULL, rp->display);
pixaAddPix(pixa2, pix2, L_INSERT);
pix2 = DoBlendTest(pix1, box, color, gamma, minval, maxval, 2);
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 13, 15, ... 23 */
pixDisplayWithTitle(pix2, 150 * i, 200, NULL, rp->display);
pixaAddPix(pixa3, pix2, L_INSERT);
pixDestroy(&pix1);
}
if (rp->display) {
pixaConvertToPdf(pixa2, 0, 0.75, L_FLATE_ENCODE, 0, "blend 1 test",
"/tmp/alpha/blending1.pdf");
pixaConvertToPdf(pixa3, 0, 0.75, L_FLATE_ENCODE, 0, "blend 2 test",
"/tmp/alpha/blending2.pdf");
}
pixaDestroy(&pixa);
pixaDestroy(&pixa2);
pixaDestroy(&pixa3);
boxDestroy(&box);
/* ------------------------ (4) ----------------------------*/
/* Use one image as the alpha component for a second image */
pix1 = pixRead("test24.jpg");
pix2 = pixRead("marge.jpg");
pix3 = pixScale(pix2, 1.9, 2.2);
pix4 = pixConvertTo8(pix3, 0);
pixSetRGBComponent(pix1, pix4, L_ALPHA_CHANNEL);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 24 */
pixDisplayWithTitle(pix1, 600, 0, NULL, rp->display);
/* Set the alpha value in a colormap to bval */
pix5 = pixOctreeColorQuant(pix1, 128, 0);
cmap = pixGetColormap(pix5);
pixcmapToArrays(cmap, &rmap, &gmap, &bmap, NULL);
n = pixcmapGetCount(cmap);
for (i = 0; i < n; i++) {
pixcmapGetColor(cmap, i, &rval, &gval, &bval);
cta = (RGBA_QUAD *)cmap->array;
cta[i].alpha = bval;
}
/* Test binary serialization/deserialization of colormap with alpha */
pixcmapSerializeToMemory(cmap, 4, &ncolors, &data);
cmap2 = pixcmapDeserializeFromMemory(data, 4, ncolors);
CmapEqual(cmap, cmap2, &equal);
regTestCompareValues(rp, TRUE, equal, 0.0); /* 25 */
pixcmapDestroy(&cmap2);
lept_free(data);
/* Test ascii serialization/deserialization of colormap with alpha */
fp = fopenWriteStream("/tmp/alpha/cmap.4", "w");
pixcmapWriteStream(fp, cmap);
fclose(fp);
fp = fopenReadStream("/tmp/alpha/cmap.4");
cmap2 = pixcmapReadStream(fp);
fclose(fp);
CmapEqual(cmap, cmap2, &equal);
regTestCompareValues(rp, TRUE, equal, 0.0); /* 26 */
pixcmapDestroy(&cmap2);
/* Test r/w for cmapped pix with non-opaque alpha */
pixDisplayWithTitle(pix5, 900, 0, NULL, rp->display);
regTestWritePixAndCheck(rp, pix5, IFF_PNG); /* 27 */
pixWrite("/tmp/alpha/fourcomp.png", pix5, IFF_PNG);
pix6 = pixRead("/tmp/alpha/fourcomp.png");
regTestComparePix(rp, pix5, pix6); /* 28 */
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pix3);
pixDestroy(&pix4);
pixDestroy(&pix5);
pixDestroy(&pix6);
lept_free(rmap);
lept_free(gmap);
lept_free(bmap);
return regTestCleanup(rp);
}
main(int argc,
char **argv)
{
l_int32 i, j, wc, hc, d;
L_KERNEL *kel1, *kel2;
PIX *pixs, *pixg, *pixacc, *pixd, *pixt;
char *filein, *fileout;
static char mainName[] = "convolvetest";
if (argc != 5)
exit(ERROR_INT(" Syntax: convolvetest filein wc hc fileout", mainName, 1));
filein = argv[1];
wc = atoi(argv[2]);
hc = atoi(argv[3]);
fileout = argv[4];
if ((pixs = pixRead(filein)) == NULL)
exit(ERROR_INT("pix not made", mainName, 1));
#if 0 /* Measure speed */
pixacc = pixBlockconvAccum(pixs);
for (i = 0; i < NTIMES; i++) {
pixd = pixBlockconvGray(pixs, pixacc, wc, hc);
if ((i+1) % 10 == 0)
fprintf(stderr, "%d iters\n", i + 1);
pixDestroy(&pixd);
}
pixd = pixBlockconvGray(pixs, pixacc, wc, hc);
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
pixDestroy(&pixacc);
#endif
#if 0 /* Test pixBlockconvGray() */
pixacc = pixBlockconvAccum(pixs);
pixd = pixBlockconvGray(pixs, pixacc, wc, hc);
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
pixDestroy(&pixacc);
#endif
#if 0 /* Test pixBlockconv() */
pixd = pixBlockconv(pixs, wc, hc);
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
#endif
#if 0 /* Test pixBlockrank() */
pixacc = pixBlockconvAccum(pixs);
pixd = pixBlockrank(pixs, pixacc, wc, hc, 0.5);
pixWrite(fileout, pixd, IFF_TIFF_G4);
pixDestroy(&pixacc);
#endif
#if 0 /* Test pixBlocksum() */
pixacc = pixBlockconvAccum(pixs);
pixd = pixBlocksum(pixs, pixacc, wc, hc);
pixInvert(pixd, pixd);
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
pixDestroy(&pixacc);
#endif
#if 0 /* Test pixCensusTransform() */
d = pixGetDepth(pixs);
if (d == 32)
pixt = pixConvertRGBToLuminance(pixs);
else
pixt = pixClone(pixs);
pixacc = pixBlockconvAccum(pixt);
pixd = pixCensusTransform(pixt, wc, NULL);
pixDestroy(&pixt);
pixDestroy(&pixacc);
pixWrite(fileout, pixd, IFF_PNG);
#endif
#if 1 /* Test generic convolution with kel1 */
if (pixGetDepth(pixs) == 32)
pixg = pixScaleRGBToGrayFast(pixs, 2, COLOR_GREEN);
else
pixg = pixScale(pixs, 0.5, 0.5);
pixDisplay(pixg, 0, 600);
kel1 = kernelCreateFromString(5, 5, 2, 2, kdatastr);
pixd = pixConvolve(pixg, kel1, 8, 1);
pixDisplay(pixd, 700, 0);
pixWrite("/tmp/junkpixd4.bmp", pixd, IFF_BMP);
pixDestroy(&pixd);
kernelDestroy(&kel1);
/* Test convolution with flat rectangular kel */
kel2 = kernelCreate(11, 11);
kernelSetOrigin(kel2, 5, 5);
for (i = 0; i < 11; i++) {
for (j = 0; j < 11; j++)
kernelSetElement(kel2, i, j, 1);
}
startTimer();
pixd = pixConvolve(pixg, kel2, 8, 1);
fprintf(stderr, "Generic convolution: %7.3f sec\n", stopTimer());
pixDisplay(pixd, 1200, 0);
pixWrite("/tmp/junkpixd5.bmp", pixd, IFF_BMP);
startTimer();
pixt = pixBlockconv(pixg, 5, 5);
fprintf(stderr, "Block convolution: %7.3f sec\n", stopTimer());
pixDisplay(pixd, 1200, 600);
pixWrite("/tmp/junkpixd6.bmp", pixt, IFF_BMP);
pixCompareGray(pixd, pixt, L_COMPARE_ABS_DIFF, GPLOT_X11, NULL,
NULL, NULL, NULL);
pixDestroy(&pixg);
pixDestroy(&pixt);
kernelDestroy(&kel2);
#endif
pixDestroy(&pixs);
pixDestroy(&pixd);
return 0;
}
int main(int argc,
char **argv)
{
l_int32 i, j, sizex, sizey, bias;
FPIX *fpixv, *fpixrv;
L_KERNEL *kel1, *kel2, *kel3x, *kel3y;
PIX *pixs, *pixacc, *pixg, *pixt, *pixd;
PIX *pixb, *pixm, *pixms, *pixrv, *pix1, *pix2, *pix3, *pix4;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
/* Test pixBlockconvGray() on 8 bpp */
pixs = pixRead("test8.jpg");
pixacc = pixBlockconvAccum(pixs);
pixd = pixBlockconvGray(pixs, pixacc, 3, 5);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 0 */
pixDisplayWithTitle(pixd, 100, 0, NULL, rp->display);
pixDestroy(&pixacc);
pixDestroy(&pixd);
/* Test pixBlockconv() on 8 bpp */
pixd = pixBlockconv(pixs, 9, 8);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 1 */
pixDisplayWithTitle(pixd, 200, 0, NULL, rp->display);
pixDestroy(&pixd);
pixDestroy(&pixs);
/* Test pixBlockrank() on 1 bpp */
pixs = pixRead("test1.png");
pixacc = pixBlockconvAccum(pixs);
for (i = 0; i < 3; i++) {
pixd = pixBlockrank(pixs, pixacc, 4, 4, 0.25 + 0.25 * i);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 2 - 4 */
pixDisplayWithTitle(pixd, 300 + 100 * i, 0, NULL, rp->display);
pixDestroy(&pixd);
}
/* Test pixBlocksum() on 1 bpp */
pixd = pixBlocksum(pixs, pixacc, 16, 16);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 5 */
pixDisplayWithTitle(pixd, 700, 0, NULL, rp->display);
pixDestroy(&pixd);
pixDestroy(&pixacc);
pixDestroy(&pixs);
/* Test pixCensusTransform() */
pixs = pixRead("test24.jpg");
pixg = pixScaleRGBToGrayFast(pixs, 2, COLOR_GREEN);
pixd = pixCensusTransform(pixg, 10, NULL);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 6 */
pixDisplayWithTitle(pixd, 800, 0, NULL, rp->display);
pixDestroy(&pixd);
/* Test generic convolution with kel1 */
kel1 = kernelCreateFromString(5, 5, 2, 2, kel1str);
pixd = pixConvolve(pixg, kel1, 8, 1);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 7 */
pixDisplayWithTitle(pixd, 100, 500, NULL, rp->display);
pixDestroy(&pixd);
/* Test convolution with flat rectangular kel */
kel2 = kernelCreate(11, 11);
kernelSetOrigin(kel2, 5, 5);
for (i = 0; i < 11; i++) {
for (j = 0; j < 11; j++)
kernelSetElement(kel2, i, j, 1);
}
pixd = pixConvolve(pixg, kel2, 8, 1);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 8 */
pixDisplayWithTitle(pixd, 200, 500, NULL, rp->display);
pixDestroy(&pixd);
kernelDestroy(&kel1);
kernelDestroy(&kel2);
/* Test pixBlockconv() on 32 bpp */
pixt = pixScaleBySampling(pixs, 0.5, 0.5);
pixd = pixBlockconv(pixt, 4, 6);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 9 */
pixDisplayWithTitle(pixd, 300, 500, NULL, rp->display);
pixDestroy(&pixt);
pixDestroy(&pixs);
pixDestroy(&pixg);
pixDestroy(&pixd);
/* Test bias convolution non-separable with kel2 */
pixs = pixRead("marge.jpg");
pixg = pixScaleRGBToGrayFast(pixs, 2, COLOR_GREEN);
kel2 = kernelCreateFromString(5, 5, 2, 2, kel2str);
pixd = pixConvolveWithBias(pixg, kel2, NULL, TRUE, &bias);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 10 */
pixDisplayWithTitle(pixd, 400, 500, NULL, rp->display);
fprintf(stderr, "bias = %d\n", bias);
kernelDestroy(&kel2);
pixDestroy(&pixd);
/* Test bias convolution separable with kel3x and kel3y */
kel3x = kernelCreateFromString(1, 5, 0, 2, kel3xstr);
kel3y = kernelCreateFromString(7, 1, 3, 0, kel3ystr);
pixd = pixConvolveWithBias(pixg, kel3x, kel3y, TRUE, &bias);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 11 */
pixDisplayWithTitle(pixd, 500, 500, NULL, rp->display);
fprintf(stderr, "bias = %d\n", bias);
kernelDestroy(&kel3x);
kernelDestroy(&kel3y);
pixDestroy(&pixd);
pixDestroy(&pixs);
pixDestroy(&pixg);
/* Test pixWindowedMean() and pixWindowedMeanSquare() on 8 bpp */
pixs = pixRead("feyn-fract2.tif");
pixg = pixConvertTo8(pixs, 0);
sizex = 5;
sizey = 20;
pixb = pixAddBorderGeneral(pixg, sizex + 1, sizex + 1,
sizey + 1, sizey + 1, 0);
pixm = pixWindowedMean(pixb, sizex, sizey, 1, 1);
pixms = pixWindowedMeanSquare(pixb, sizex, sizey, 1);
regTestWritePixAndCheck(rp, pixm, IFF_JFIF_JPEG); /* 12 */
pixDisplayWithTitle(pixm, 100, 0, NULL, rp->display);
pixDestroy(&pixs);
pixDestroy(&pixb);
/* Test pixWindowedVariance() on 8 bpp */
pixWindowedVariance(pixm, pixms, &fpixv, &fpixrv);
pixrv = fpixConvertToPix(fpixrv, 8, L_CLIP_TO_ZERO, 1);
regTestWritePixAndCheck(rp, pixrv, IFF_JFIF_JPEG); /* 13 */
pixDisplayWithTitle(pixrv, 100, 250, NULL, rp->display);
pix1 = fpixDisplayMaxDynamicRange(fpixv);
pix2 = fpixDisplayMaxDynamicRange(fpixrv);
pixDisplayWithTitle(pix1, 100, 500, "Variance", rp->display);
pixDisplayWithTitle(pix2, 100, 750, "RMS deviation", rp->display);
regTestWritePixAndCheck(rp, pix1, IFF_JFIF_JPEG); /* 14 */
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 15 */
fpixDestroy(&fpixv);
fpixDestroy(&fpixrv);
pixDestroy(&pixm);
pixDestroy(&pixms);
pixDestroy(&pixrv);
/* Test again all windowed functions with simpler interface */
pixWindowedStats(pixg, sizex, sizey, 0, NULL, NULL, &fpixv, &fpixrv);
pix3 = fpixDisplayMaxDynamicRange(fpixv);
pix4 = fpixDisplayMaxDynamicRange(fpixrv);
regTestComparePix(rp, pix1, pix3); /* 16 */
regTestComparePix(rp, pix2, pix4); /* 17 */
pixDestroy(&pixg);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pix3);
pixDestroy(&pix4);
fpixDestroy(&fpixv);
fpixDestroy(&fpixrv);
return regTestCleanup(rp);
}
int main(int argc,
char **argv)
{
l_int32 i, j, wc, hc, d, bias;
L_KERNEL *kel1, *kel2, *kel3x, *kel3y;
PIX *pix, *pixs, *pixg, *pixacc, *pixd, *pixt;
char *filein, *fileout;
static char mainName[] = "convolvetest";
if (argc != 5)
return ERROR_INT(" Syntax: convolvetest filein wc hc fileout",
mainName, 1);
filein = argv[1];
wc = atoi(argv[2]);
hc = atoi(argv[3]);
fileout = argv[4];
if ((pix = pixRead(filein)) == NULL)
return ERROR_INT("pix not made", mainName, 1);
d = pixGetDepth(pix);
if (d != 1 && d != 8 && d != 32)
pixs = pixConvertTo8(pix, 0);
else
pixs = pixClone(pix);
pixDestroy(&pix);
d = pixGetDepth(pixs);
if (d == 8 && (ALL || 0)) {
/* Measure speed */
pixacc = pixBlockconvAccum(pixs);
for (i = 0; i < NTIMES; i++) {
pixd = pixBlockconvGray(pixs, pixacc, wc, hc);
if ((i+1) % 10 == 0)
fprintf(stderr, "%d iters\n", i + 1);
pixDestroy(&pixd);
}
pixd = pixBlockconvGray(pixs, pixacc, wc, hc);
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
pixDestroy(&pixacc);
}
if (d == 8 && (ALL || 0)) {
/* Test pixBlockconvGray() */
pixacc = pixBlockconvAccum(pixs);
pixd = pixBlockconvGray(pixs, pixacc, wc, hc);
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
pixDestroy(&pixacc);
}
if (ALL || 0) {
/* Test pixBlockconv() */
pixd = pixBlockconv(pixs, wc, hc);
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
}
if (d == 1 && (ALL || 0)) {
/* Test pixBlockrank() */
pixacc = pixBlockconvAccum(pixs);
pixd = pixBlockrank(pixs, pixacc, wc, hc, 0.5);
pixWrite(fileout, pixd, IFF_TIFF_G4);
pixDestroy(&pixacc);
}
if (d == 1 && (ALL || 0)) {
/* Test pixBlocksum() */
pixacc = pixBlockconvAccum(pixs);
pixd = pixBlocksum(pixs, pixacc, wc, hc);
pixInvert(pixd, pixd);
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
pixDestroy(&pixacc);
}
if (ALL || 0) {
/* Test pixCensusTransform() */
d = pixGetDepth(pixs);
if (d == 32)
pixt = pixConvertRGBToLuminance(pixs);
else
pixt = pixClone(pixs);
pixacc = pixBlockconvAccum(pixt);
pixd = pixCensusTransform(pixt, wc, NULL);
pixDestroy(&pixt);
pixDestroy(&pixacc);
pixWrite(fileout, pixd, IFF_PNG);
}
if (ALL || 0) {
/* Test generic convolution with kel1 */
lept_mkdir("lept");
if (pixGetDepth(pixs) == 32)
pixg = pixScaleRGBToGrayFast(pixs, 2, COLOR_GREEN);
else
pixg = pixScale(pixs, 0.5, 0.5);
pixDisplay(pixg, 0, 600);
kel1 = kernelCreateFromString(5, 5, 2, 2, kel1str);
pixd = pixConvolve(pixg, kel1, 8, 1);
pixDisplay(pixd, 700, 0);
pixWrite("/tmp/lept/convol_d4.bmp", pixd, IFF_BMP);
pixDestroy(&pixd);
kernelDestroy(&kel1);
/* Test convolution with flat rectangular kel */
kel2 = kernelCreate(11, 11);
kernelSetOrigin(kel2, 5, 5);
for (i = 0; i < 11; i++) {
for (j = 0; j < 11; j++)
kernelSetElement(kel2, i, j, 1);
}
startTimer();
pixd = pixConvolve(pixg, kel2, 8, 1);
fprintf(stderr, "Generic convolution: %7.3f sec\n", stopTimer());
pixDisplay(pixd, 1200, 0);
pixWrite("/tmp/lept/convol_d5.bmp", pixd, IFF_BMP);
startTimer();
pixt = pixBlockconv(pixg, 5, 5);
fprintf(stderr, "Block convolution: %7.3f sec\n", stopTimer());
pixDisplay(pixd, 1200, 600);
pixWrite("/tmp/lept/convol_d6.bmp", pixt, IFF_BMP);
pixCompareGray(pixd, pixt, L_COMPARE_ABS_DIFF, GPLOT_X11, NULL,
NULL, NULL, NULL);
pixDestroy(&pixg);
pixDestroy(&pixt);
kernelDestroy(&kel2);
}
if (ALL || 0) {
/* Test bias convolution with kel2 */
if (pixGetDepth(pixs) == 32)
pixg = pixScaleRGBToGrayFast(pixs, 2, COLOR_GREEN);
else
pixg = pixScale(pixs, 0.5, 0.5);
pixDisplay(pixg, 0, 600);
kel2 = kernelCreateFromString(5, 5, 2, 2, kel2str);
pixd = pixConvolveWithBias(pixg, kel2, NULL, TRUE, &bias);
pixDisplay(pixd, 700, 0);
fprintf(stderr, "bias = %d\n", bias);
pixWrite("/tmp/lept/convol_d6.png", pixd, IFF_PNG);
pixDestroy(&pixg);
kernelDestroy(&kel2);
pixDestroy(&pixd);
}
if (ALL || 1) {
/* Test separable bias convolution with kel3x, kel3y */
if (pixGetDepth(pixs) == 32)
pixg = pixScaleRGBToGrayFast(pixs, 2, COLOR_GREEN);
else
pixg = pixScale(pixs, 0.5, 0.5);
pixDisplay(pixg, 0, 600);
kel3x = kernelCreateFromString(1, 5, 0, 2, kel3xstr);
kel3y = kernelCreateFromString(7, 1, 3, 0, kel3ystr);
pixd = pixConvolveWithBias(pixg, kel3x, kel3y, TRUE, &bias);
pixDisplay(pixd, 700, 0);
fprintf(stderr, "bias = %d\n", bias);
pixWrite("/tmp/lept/convol_d7.png", pixd, IFF_PNG);
pixDestroy(&pixg);
kernelDestroy(&kel3x);
kernelDestroy(&kel3y);
pixDestroy(&pixd);
}
pixDestroy(&pixs);
return 0;
}
