/*!
* numaaReadStream()
*
* Input: stream
* Return: naa, or null on error
*/
NUMAA *
numaaReadStream(FILE *fp)
{
l_int32 i, n, index, ret, version;
NUMA *na;
NUMAA *naa;
PROCNAME("numaaReadStream");
if (!fp)
return (NUMAA *)ERROR_PTR("stream not defined", procName, NULL);
ret = fscanf(fp, "\nNumaa Version %d\n", &version);
if (ret != 1)
return (NUMAA *)ERROR_PTR("not a numa file", procName, NULL);
if (version != NUMA_VERSION_NUMBER)
return (NUMAA *)ERROR_PTR("invalid numaa version", procName, NULL);
if (fscanf(fp, "Number of numa = %d\n\n", &n) != 1)
return (NUMAA *)ERROR_PTR("invalid number of numa", procName, NULL);
if ((naa = numaaCreate(n)) == NULL)
return (NUMAA *)ERROR_PTR("naa not made", procName, NULL);
for (i = 0; i < n; i++) {
if (fscanf(fp, "Numa[%d]:", &index) != 1)
return (NUMAA *)ERROR_PTR("invalid numa header", procName, NULL);
if ((na = numaReadStream(fp)) == NULL)
return (NUMAA *)ERROR_PTR("na not made", procName, NULL);
numaaAddNuma(naa, na, L_INSERT);
}
return naa;
}
/*!
* numaaCreateFull()
*
* Input: nptr: size of numa ptr array to be alloc'd
* n: size of individual numa arrays to be alloc'd (0 for default)
* Return: naa, or null on error
*
* Notes:
* (1) This allocates numaa and fills the array with allocated numas.
* In use, after calling this function, use
* numaaAddNumber(naa, index, val);
* to add val to the index-th numa in naa.
*/
NUMAA *
numaaCreateFull(l_int32 nptr,
l_int32 n)
{
l_int32 i;
NUMAA *naa;
NUMA *na;
naa = numaaCreate(nptr);
for (i = 0; i < nptr; i++) {
na = numaCreate(n);
numaaAddNuma(naa, na, L_INSERT);
}
return naa;
}
/*!
* \brief boxaExtractSortedPattern()
*
* \param[in] boxa typ. of word bounding boxes, in textline order
* \param[in] na index of textline for each box in boxa
* \return naa NUMAA, where each numa represents one textline,
* or NULL on error
*
* <pre>
* Notes:
* (1) The input is expected to come from pixGetWordBoxesInTextlines().
* (2) Each numa in the output consists of an average y coordinate
* of the first box in the textline, followed by pairs of
* x coordinates representing the left and right edges of each
* of the boxes in the textline.
* </pre>
*/
NUMAA *
boxaExtractSortedPattern(BOXA *boxa,
NUMA *na)
{
l_int32 index, nbox, row, prevrow, x, y, w, h;
BOX *box;
NUMA *nad;
NUMAA *naa;
PROCNAME("boxaExtractSortedPattern");
if (!boxa)
return (NUMAA *)ERROR_PTR("boxa not defined", procName, NULL);
if (!na)
return (NUMAA *)ERROR_PTR("na not defined", procName, NULL);
naa = numaaCreate(0);
nbox = boxaGetCount(boxa);
if (nbox == 0)
return naa;
prevrow = -1;
for (index = 0; index < nbox; index++) {
box = boxaGetBox(boxa, index, L_CLONE);
numaGetIValue(na, index, &row);
if (row > prevrow) {
if (index > 0)
numaaAddNuma(naa, nad, L_INSERT);
nad = numaCreate(0);
prevrow = row;
boxGetGeometry(box, NULL, &y, NULL, &h);
numaAddNumber(nad, y + h / 2);
}
boxGetGeometry(box, &x, NULL, &w, NULL);
numaAddNumber(nad, x);
numaAddNumber(nad, x + w - 1);
boxDestroy(&box);
}
numaaAddNuma(naa, nad, L_INSERT);
return naa;
}
int main(int argc,
char **argv)
{
char filename[BUF_SIZE];
char *dirin, *rootname, *fname;
l_int32 i, j, w, h, firstpage, npages, nfiles, ncomp;
l_int32 index, ival, rval, gval, bval;
BOX *box;
BOXA *boxa;
BOXAA *baa;
JBDATA *data;
JBCLASSER *classer;
NUMA *nai;
NUMAA *naa;
SARRAY *safiles;
PIX *pixs, *pixt1, *pixt2, *pixd;
PIXCMAP *cmap;
static char mainName[] = "wordsinorder";
if (argc != 3 && argc != 5)
return ERROR_INT(
" Syntax: wordsinorder dirin rootname [firstpage, npages]",
mainName, 1);
dirin = argv[1];
rootname = argv[2];
if (argc == 3) {
firstpage = 0;
npages = 0;
}
else {
firstpage = atoi(argv[3]);
npages = atoi(argv[4]);
}
/* Compute the word bounding boxes at 2x reduction, along with
* the textlines that they are in. */
safiles = getSortedPathnamesInDirectory(dirin, NULL, firstpage, npages);
nfiles = sarrayGetCount(safiles);
baa = boxaaCreate(nfiles);
naa = numaaCreate(nfiles);
for (i = 0; i < nfiles; i++) {
fname = sarrayGetString(safiles, i, 0);
if ((pixs = pixRead(fname)) == NULL) {
L_WARNING("image file %d not read\n", mainName, i);
continue;
}
pixGetWordBoxesInTextlines(pixs, 2, MIN_WORD_WIDTH, MIN_WORD_HEIGHT,
MAX_WORD_WIDTH, MAX_WORD_HEIGHT,
&boxa, &nai);
boxaaAddBoxa(baa, boxa, L_INSERT);
numaaAddNuma(naa, nai, L_INSERT);
#if RENDER_PAGES
/* Show the results on a 2x reduced image, where each
* word is outlined and the color of the box depends on the
* computed textline. */
pixt1 = pixReduceRankBinary2(pixs, 2, NULL);
pixGetDimensions(pixt1, &w, &h, NULL);
pixd = pixCreate(w, h, 8);
cmap = pixcmapCreateRandom(8, 1, 1); /* first color is black */
pixSetColormap(pixd, cmap);
pixt2 = pixUnpackBinary(pixt1, 8, 1);
pixRasterop(pixd, 0, 0, w, h, PIX_SRC | PIX_DST, pixt2, 0, 0);
ncomp = boxaGetCount(boxa);
for (j = 0; j < ncomp; j++) {
box = boxaGetBox(boxa, j, L_CLONE);
numaGetIValue(nai, j, &ival);
index = 1 + (ival % 254); /* omit black and white */
pixcmapGetColor(cmap, index, &rval, &gval, &bval);
pixRenderBoxArb(pixd, box, 2, rval, gval, bval);
boxDestroy(&box);
}
snprintf(filename, BUF_SIZE, "%s.%05d", rootname, i);
fprintf(stderr, "filename: %s\n", filename);
pixWrite(filename, pixd, IFF_PNG);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
pixDestroy(&pixs);
pixDestroy(&pixd);
#endif /* RENDER_PAGES */
}
boxaaDestroy(&baa);
numaaDestroy(&naa);
sarrayDestroy(&safiles);
return 0;
}
l_int32 main(int argc,
char **argv)
{
l_int32 ret, i, n, similar, x1, y1, val1, val2, val3, val4;
l_float32 minave, minave2, maxave, fract;
NUMA *na1, *na2, *na3, *na4, *na5, *na6;
NUMAA *naa;
PIX *pixs, *pix1, *pix2, *pix3, *pix4;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
pixs = pixRead("feyn.tif");
pix1 = pixScaleToGray6(pixs);
pixDisplayWithTitle(pix1, 100, 600, NULL, rp->display);
/* Find averages of min and max along about 120 horizontal lines */
fprintf(stderr, "Ignore the following 12 error messages:\n");
na1 = numaCreate(0);
na3 = numaCreate(0);
for (y1 = 40; y1 < 575; y1 += 5) {
ret = pixMinMaxNearLine(pix1, 20, y1, 400, y1, 5, L_SCAN_BOTH,
NULL, NULL, &minave, &maxave);
if (!ret) {
numaAddNumber(na1, (l_int32)minave);
numaAddNumber(na3, (l_int32)maxave);
if (rp->display)
fprintf(stderr, "y = %d: minave = %d, maxave = %d\n",
y1, (l_int32)minave, (l_int32)maxave);
}
}
/* Find averages along about 120 vertical lines. We've rotated
* the image by 90 degrees, so the results should be nearly
* identical to the first set. Also generate a single-sided
* scan (L_SCAN_NEGATIVE) for comparison with the double-sided scans. */
pix2 = pixRotateOrth(pix1, 3);
pixDisplayWithTitle(pix2, 600, 600, NULL, rp->display);
na2 = numaCreate(0);
na4 = numaCreate(0);
na5 = numaCreate(0);
for (x1 = 40; x1 < 575; x1 += 5) {
ret = pixMinMaxNearLine(pix2, x1, 20, x1, 400, 5, L_SCAN_BOTH,
NULL, NULL, &minave, &maxave);
pixMinMaxNearLine(pix2, x1, 20, x1, 400, 5, L_SCAN_NEGATIVE,
NULL, NULL, &minave2, NULL);
if (!ret) {
numaAddNumber(na2, (l_int32)minave);
numaAddNumber(na4, (l_int32)maxave);
numaAddNumber(na5, (l_int32)minave2);
if (rp->display)
fprintf(stderr,
"x = %d: minave = %d, minave2 = %d, maxave = %d\n",
x1, (l_int32)minave, (l_int32)minave2, (l_int32)maxave);
}
}
numaSimilar(na1, na2, 3.0, &similar); /* should be TRUE */
regTestCompareValues(rp, similar, 1, 0); /* 0 */
numaSimilar(na3, na4, 1.0, &similar); /* should be TRUE */
regTestCompareValues(rp, similar, 1, 0); /* 1 */
numaWrite("/tmp/lept/regout/na1.na", na1);
numaWrite("/tmp/lept/regout/na2.na", na2);
numaWrite("/tmp/lept/regout/na3.na", na3);
numaWrite("/tmp/lept/regout/na4.na", na4);
numaWrite("/tmp/lept/regout/na5.na", na5);
regTestCheckFile(rp, "/tmp/lept/regout/na1.na"); /* 2 */
regTestCheckFile(rp, "/tmp/lept/regout/na2.na"); /* 3 */
regTestCheckFile(rp, "/tmp/lept/regout/na3.na"); /* 4 */
regTestCheckFile(rp, "/tmp/lept/regout/na4.na"); /* 5 */
regTestCheckFile(rp, "/tmp/lept/regout/na5.na"); /* 6 */
/* Plot the average minimums for the 3 cases */
naa = numaaCreate(3);
numaaAddNuma(naa, na1, L_INSERT); /* portrait, double-sided */
numaaAddNuma(naa, na2, L_INSERT); /* landscape, double-sided */
numaaAddNuma(naa, na5, L_INSERT); /* landscape, single-sided */
gplotSimpleN(naa, GPLOT_PNG, "/tmp/lept/regout/nearline",
"Average minimums along lines");
#if 0
#ifndef _WIN32
sleep(1);
#else
Sleep(1000);
#endif /* _WIN32 */
#endif
pix3 = pixRead("/tmp/lept/regout/nearline.png");
regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 7 */
pixDisplayWithTitle(pix3, 100, 100, NULL, rp->display);
if (rp->display) {
n = numaGetCount(na3);
for (i = 0; i < n; i++) {
numaGetIValue(na1, i, &val1);
numaGetIValue(na2, i, &val2);
numaGetIValue(na3, i, &val3);
numaGetIValue(na4, i, &val4);
fprintf(stderr, "val1 = %d, val2 = %d, diff = %d; "
"val3 = %d, val4 = %d, diff = %d\n",
val1, val2, L_ABS(val1 - val2),
val3, val4, L_ABS(val3 - val4));
}
}
numaaDestroy(&naa);
numaDestroy(&na3);
numaDestroy(&na4);
/* Plot minima along a single line, with different distances */
pixMinMaxNearLine(pix1, 20, 200, 400, 200, 2, L_SCAN_BOTH,
&na1, NULL, NULL, NULL);
pixMinMaxNearLine(pix1, 20, 200, 400, 200, 5, L_SCAN_BOTH,
&na2, NULL, NULL, NULL);
pixMinMaxNearLine(pix1, 20, 200, 400, 200, 15, L_SCAN_BOTH,
&na3, NULL, NULL, NULL);
numaWrite("/tmp/lept/regout/na6.na", na1);
regTestCheckFile(rp, "/tmp/lept/regout/na6.na"); /* 8 */
n = numaGetCount(na1);
fract = 100.0 / n;
na4 = numaTransform(na1, 0.0, fract);
na5 = numaTransform(na2, 0.0, fract);
na6 = numaTransform(na3, 0.0, fract);
numaDestroy(&na1);
numaDestroy(&na2);
numaDestroy(&na3);
na1 = numaUniformSampling(na4, 100);
na2 = numaUniformSampling(na5, 100);
na3 = numaUniformSampling(na6, 100);
naa = numaaCreate(3);
numaaAddNuma(naa, na1, L_INSERT);
numaaAddNuma(naa, na2, L_INSERT);
numaaAddNuma(naa, na3, L_INSERT);
gplotSimpleN(naa, GPLOT_PNG, "/tmp/lept/regout/nearline2",
"Min along line");
pix4 = pixRead("/tmp/lept/regout/nearline2.png");
regTestWritePixAndCheck(rp, pix4, IFF_PNG); /* 9 */
pixDisplayWithTitle(pix4, 800, 100, NULL, rp->display);
numaaDestroy(&naa);
numaDestroy(&na4);
numaDestroy(&na5);
numaDestroy(&na6);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pix3);
pixDestroy(&pix4);
pixDestroy(&pixs);
return regTestCleanup(rp);
}
int main(int argc,
char **argv)
{
char label[512];
l_int32 rval, gval, bval, w, h, i, j, rwhite, gwhite, bwhite, count;
l_uint32 pixel;
GPLOT *gplot1, *gplot2;
NUMA *naseq, *na;
NUMAA *naa1, *naa2;
PIX *pixs, *pixt, *pixt0, *pixt1, *pixt2;
PIX *pixr, *pixg, *pixb;
PIXA *pixa;
PIXCMAP *cmap;
static char mainName[] = "colorspacetest";
if (argc != 2)
return ERROR_INT(" Syntax: colorspacetest filein", mainName, 1);
if ((pixs = pixRead(argv[1])) == NULL)
return ERROR_INT("pixs not made", mainName, 1);
/* Generate colors by sampling hue with max sat and value.
* This was used to make the color strip 19-colors.png. */
pixa = pixaCreate(19);
for (i = 0; i < 19; i++) {
convertHSVToRGB((240 * i / 18), 255, 255, &rval, &gval, &bval);
composeRGBPixel(rval, gval, bval, &pixel);
pixt1 = pixCreate(50, 100, 32);
pixSetAllArbitrary(pixt1, pixel);
pixaAddPix(pixa, pixt1, L_INSERT);
}
pixt2 = pixaDisplayTiledInRows(pixa, 32, 1100, 1.0, 0, 0, 0);
pixDisplayWrite(pixt2, 1);
pixDestroy(&pixt2);
pixaDestroy(&pixa);
/* Colorspace conversion in rgb */
pixDisplayWrite(pixs, 1);
pixt = pixConvertRGBToHSV(NULL, pixs);
pixDisplayWrite(pixt, 1);
pixConvertHSVToRGB(pixt, pixt);
pixDisplayWrite(pixt, 1);
pixDestroy(&pixt);
/* Colorspace conversion on a colormap */
pixt = pixOctreeQuantNumColors(pixs, 25, 0);
pixDisplayWrite(pixt, 1);
cmap = pixGetColormap(pixt);
pixcmapWriteStream(stderr, cmap);
pixcmapConvertRGBToHSV(cmap);
pixcmapWriteStream(stderr, cmap);
pixDisplayWrite(pixt, 1);
pixcmapConvertHSVToRGB(cmap);
pixcmapWriteStream(stderr, cmap);
pixDisplayWrite(pixt, 1);
pixDestroy(&pixt);
/* Color content extraction */
pixColorContent(pixs, 0, 0, 0, 0, &pixr, &pixg, &pixb);
pixDisplayWrite(pixr, 1);
pixDisplayWrite(pixg, 1);
pixDisplayWrite(pixb, 1);
pixDestroy(&pixr);
pixDestroy(&pixg);
pixDestroy(&pixb);
/* Color content measurement */
pixa = pixaCreate(20);
naseq = numaMakeSequence(100, 5, 20);
naa1 = numaaCreate(6);
naa2 = numaaCreate(6);
for (i = 0; i < 6; i++) {
na = numaCreate(20);
numaaAddNuma(naa1, na, L_COPY);
numaaAddNuma(naa2, na, L_INSERT);
}
pixGetDimensions(pixs, &w, &h, NULL);
for (i = 0; i < 20; i++) {
rwhite = 100 + 5 * i;
gwhite = 200 - 5 * i;
bwhite = 150;
pixt0 = pixGlobalNormRGB(NULL, pixs, rwhite, gwhite, bwhite, 255);
pixaAddPix(pixa, pixt0, L_INSERT);
pixt1 = pixColorMagnitude(pixs, rwhite, gwhite, bwhite,
L_MAX_DIFF_FROM_AVERAGE_2);
for (j = 0; j < 6; j++) {
pixt2 = pixThresholdToBinary(pixt1, 30 + 10 * j);
pixInvert(pixt2, pixt2);
pixCountPixels(pixt2, &count, NULL);
na = numaaGetNuma(naa1, j, L_CLONE);
numaAddNumber(na, (l_float32)count / (l_float32)(w * h));
numaDestroy(&na);
pixDestroy(&pixt2);
}
pixDestroy(&pixt1);
pixt1 = pixColorMagnitude(pixs, rwhite, gwhite, bwhite,
L_MAX_MIN_DIFF_FROM_2);
for (j = 0; j < 6; j++) {
pixt2 = pixThresholdToBinary(pixt1, 30 + 10 * j);
pixInvert(pixt2, pixt2);
pixCountPixels(pixt2, &count, NULL);
na = numaaGetNuma(naa2, j, L_CLONE);
numaAddNumber(na, (l_float32)count / (l_float32)(w * h));
numaDestroy(&na);
pixDestroy(&pixt2);
}
pixDestroy(&pixt1);
}
gplot1 = gplotCreate("/tmp/junkplot1", GPLOT_X11,
"Fraction with given color (diff from average)",
"white point space for red", "amount of color");
gplot2 = gplotCreate("/tmp/junkplot2", GPLOT_X11,
"Fraction with given color (min diff)",
"white point space for red", "amount of color");
for (j = 0; j < 6; j++) {
na = numaaGetNuma(naa1, j, L_CLONE);
sprintf(label, "thresh %d", 30 + 10 * j);
gplotAddPlot(gplot1, naseq, na, GPLOT_LINES, label);
numaDestroy(&na);
na = numaaGetNuma(naa2, j, L_CLONE);
gplotAddPlot(gplot2, naseq, na, GPLOT_LINES, label);
numaDestroy(&na);
}
gplotMakeOutput(gplot1);
gplotMakeOutput(gplot2);
gplotDestroy(&gplot1);
gplotDestroy(&gplot2);
pixt1 = pixaDisplayTiledAndScaled(pixa, 32, 250, 4, 0, 10, 2);
pixWrite("/tmp/junkcolormag", pixt1, IFF_PNG);
pixDisplayWithTitle(pixt1, 0, 100, "Color magnitude", 1);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
numaDestroy(&naseq);
numaaDestroy(&naa1);
numaaDestroy(&naa2);
pixDisplayMultiple("/tmp/display/file*");
pixDestroy(&pixs);
return 0;
}
int main(int argc,
char **argv)
{
char label[512];
l_int32 rval, gval, bval, w, h, i, j, rwhite, gwhite, bwhite, count;
l_uint32 pixel;
GPLOT *gplot1, *gplot2;
NUMA *naseq, *na;
NUMAA *naa1, *naa2;
PIX *pixs, *pixt, *pixt0, *pixt1, *pixt2;
PIX *pixr, *pixg, *pixb; /* for color content extraction */
PIXA *pixa, *pixat;
PIXCMAP *cmap;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
/* Generate a pdf of results when called with display */
pixa = pixaCreate(0);
/* Generate colors by sampling hue with max sat and value.
* This image has been saved as 19-colors.png. */
pixat = pixaCreate(19);
for (i = 0; i < 19; i++) {
convertHSVToRGB((240 * i / 18), 255, 255, &rval, &gval, &bval);
composeRGBPixel(rval, gval, bval, &pixel);
pixt1 = pixCreate(50, 100, 32);
pixSetAllArbitrary(pixt1, pixel);
pixaAddPix(pixat, pixt1, L_INSERT);
}
pixt2 = pixaDisplayTiledInRows(pixat, 32, 1100, 1.0, 0, 0, 0);
regTestWritePixAndCheck(rp, pixt2, IFF_PNG); /* 0 */
pixaAddPix(pixa, pixt2, L_INSERT);
pixaDestroy(&pixat);
/* Colorspace conversion in rgb */
pixs = pixRead("wyom.jpg");
pixaAddPix(pixa, pixs, L_INSERT);
pixt = pixConvertRGBToHSV(NULL, pixs);
regTestWritePixAndCheck(rp, pixt, IFF_JFIF_JPEG); /* 1 */
pixaAddPix(pixa, pixt, L_COPY);
pixConvertHSVToRGB(pixt, pixt);
regTestWritePixAndCheck(rp, pixt, IFF_JFIF_JPEG); /* 2 */
pixaAddPix(pixa, pixt, L_INSERT);
/* Colorspace conversion on a colormap */
pixt = pixOctreeQuantNumColors(pixs, 25, 0);
regTestWritePixAndCheck(rp, pixt, IFF_JFIF_JPEG); /* 3 */
pixaAddPix(pixa, pixt, L_COPY);
cmap = pixGetColormap(pixt);
if (rp->display) pixcmapWriteStream(stderr, cmap);
pixcmapConvertRGBToHSV(cmap);
if (rp->display) pixcmapWriteStream(stderr, cmap);
regTestWritePixAndCheck(rp, pixt, IFF_JFIF_JPEG); /* 4 */
pixaAddPix(pixa, pixt, L_COPY);
pixcmapConvertHSVToRGB(cmap);
if (rp->display) pixcmapWriteStream(stderr, cmap);
regTestWritePixAndCheck(rp, pixt, IFF_JFIF_JPEG); /* 5 */
pixaAddPix(pixa, pixt, L_INSERT);
/* Color content extraction */
pixColorContent(pixs, 0, 0, 0, 0, &pixr, &pixg, &pixb);
regTestWritePixAndCheck(rp, pixr, IFF_JFIF_JPEG); /* 6 */
pixaAddPix(pixa, pixr, L_INSERT);
regTestWritePixAndCheck(rp, pixg, IFF_JFIF_JPEG); /* 7 */
pixaAddPix(pixa, pixg, L_INSERT);
regTestWritePixAndCheck(rp, pixb, IFF_JFIF_JPEG); /* 8 */
pixaAddPix(pixa, pixb, L_INSERT);
/* Color content measurement. This tests the global
* mapping of (r,g,b) --> (white), for 20 different
* values of (r,g,b). For each mappings, we compute
* the color magnitude and threshold it at six values.
* For each of those six thresholds, we plot the
* fraction of pixels that exceeds the threshold
* color magnitude, where the red value (mapped to
* white) goes between 100 and 195. */
pixat = pixaCreate(20);
naseq = numaMakeSequence(100, 5, 20);
naa1 = numaaCreate(6);
naa2 = numaaCreate(6);
for (i = 0; i < 6; i++) {
na = numaCreate(20);
numaaAddNuma(naa1, na, L_COPY);
numaaAddNuma(naa2, na, L_INSERT);
}
pixGetDimensions(pixs, &w, &h, NULL);
for (i = 0; i < 20; i++) {
rwhite = 100 + 5 * i;
gwhite = 200 - 5 * i;
bwhite = 150;
pixt0 = pixGlobalNormRGB(NULL, pixs, rwhite, gwhite, bwhite, 255);
pixaAddPix(pixat, pixt0, L_INSERT);
pixt1 = pixColorMagnitude(pixs, rwhite, gwhite, bwhite,
L_MAX_DIFF_FROM_AVERAGE_2);
for (j = 0; j < 6; j++) {
pixt2 = pixThresholdToBinary(pixt1, 30 + 10 * j);
pixInvert(pixt2, pixt2);
pixCountPixels(pixt2, &count, NULL);
na = numaaGetNuma(naa1, j, L_CLONE);
numaAddNumber(na, (l_float32)count / (l_float32)(w * h));
numaDestroy(&na);
pixDestroy(&pixt2);
}
pixDestroy(&pixt1);
pixt1 = pixColorMagnitude(pixs, rwhite, gwhite, bwhite,
L_MAX_MIN_DIFF_FROM_2);
for (j = 0; j < 6; j++) {
pixt2 = pixThresholdToBinary(pixt1, 30 + 10 * j);
pixInvert(pixt2, pixt2);
pixCountPixels(pixt2, &count, NULL);
na = numaaGetNuma(naa2, j, L_CLONE);
numaAddNumber(na, (l_float32)count / (l_float32)(w * h));
numaDestroy(&na);
pixDestroy(&pixt2);
}
pixDestroy(&pixt1);
}
gplot1 = gplotCreate("/tmp/regout/colorspace.10", GPLOT_PNG,
"Fraction with given color (diff from average)",
"white point space for red", "amount of color");
gplot2 = gplotCreate("/tmp/regout/colorspace.11", GPLOT_PNG,
"Fraction with given color (min diff)",
"white point space for red", "amount of color");
for (j = 0; j < 6; j++) {
na = numaaGetNuma(naa1, j, L_CLONE);
sprintf(label, "thresh %d", 30 + 10 * j);
gplotAddPlot(gplot1, naseq, na, GPLOT_LINES, label);
numaDestroy(&na);
na = numaaGetNuma(naa2, j, L_CLONE);
gplotAddPlot(gplot2, naseq, na, GPLOT_LINES, label);
numaDestroy(&na);
}
gplotMakeOutput(gplot1);
gplotMakeOutput(gplot2);
gplotDestroy(&gplot1);
gplotDestroy(&gplot2);
pixt1 = pixaDisplayTiledAndScaled(pixat, 32, 250, 4, 0, 10, 2);
regTestWritePixAndCheck(rp, pixt1, IFF_JFIF_JPEG); /* 9 */
pixaAddPix(pixa, pixt1, L_INSERT);
pixDisplayWithTitle(pixt1, 0, 100, "Color magnitude", rp->display);
pixaDestroy(&pixat);
numaDestroy(&naseq);
numaaDestroy(&naa1);
numaaDestroy(&naa2);
/* Give gnuplot time to write out the files */
#ifndef _WIN32
sleep(1);
#else
Sleep(1000);
#endif /* _WIN32 */
/* Save as golden files, or check against them */
regTestCheckFile(rp, "/tmp/regout/colorspace.10.png"); /* 10 */
regTestCheckFile(rp, "/tmp/regout/colorspace.11.png"); /* 11 */
if (rp->display) {
pixt = pixRead("/tmp/regout/colorspace.10.png");
pixaAddPix(pixa, pixt, L_INSERT);
pixt = pixRead("/tmp/regout/colorspace.11.png");
pixaAddPix(pixa, pixt, L_INSERT);
pixaConvertToPdf(pixa, 0, 1.0, 0, 0, "colorspace tests",
"/tmp/regout/colorspace.pdf");
L_INFO("Output pdf: /tmp/regout/colorspace.pdf\n", rp->testname);
}
pixaDestroy(&pixa);
return regTestCleanup(rp);
}
/*!
* boxaSort2d()
*
* Input: boxas
* &naa (<optional return> numaa with sorted indices
* whose values are the indices of the input array)
* delta1 (min overlap that permits aggregation of a box
* onto a boxa of horizontally-aligned boxes; pass 1)
* delta2 (min overlap that permits aggregation of a box
* onto a boxa of horizontally-aligned boxes; pass 2)
* minh1 (components less than this height either join an
* existing boxa or are set aside for pass 2)
* Return: boxaa (2d sorted version of boxa), or null on error
*
* Notes:
* (1) The final result is a sort where the 'fast scan' direction is
* left to right, and the 'slow scan' direction is from top
* to bottom. Each boxa in the boxaa represents a sorted set
* of boxes from left to right.
* (2) Two passes are used to aggregate the boxas, which can corresond
* to characters or words in a line of text. In pass 1, only
* taller components, which correspond to xheight or larger,
* are permitted to start a new boxa, whereas in pass 2,
* the remaining vertically-challenged components are allowed
* to join an existing boxa or start a new one.
* (3) If delta1 < 0, the first pass allows aggregation when
* boxes in the same boxa do not overlap vertically.
* The distance by which they can miss and still be aggregated
* is the absolute value |delta1|. Similar for delta2 on
* the second pass.
* (4) On the first pass, any component of height less than minh1
* cannot start a new boxa; it's put aside for later insertion.
* (5) On the second pass, any small component that doesn't align
* with an existing boxa can start a new one.
* (6) This can be used to identify lines of text from
* character or word bounding boxes.
*/
BOXAA *
boxaSort2d(BOXA *boxas,
NUMAA **pnaad,
l_int32 delta1,
l_int32 delta2,
l_int32 minh1)
{
l_int32 i, index, h, nt, ne, n, m, ival;
BOX *box;
BOXA *boxa, *boxae, *boxan, *boxat1, *boxat2, *boxav, *boxavs;
BOXAA *baa, *baad;
NUMA *naindex, *nae, *nan, *nah, *nav, *nat1, *nat2, *nad;
NUMAA *naa, *naad;
PROCNAME("boxaSort2d");
if (pnaad) *pnaad = NULL;
if (!boxas)
return (BOXAA *)ERROR_PTR("boxas not defined", procName, NULL);
/* Sort from left to right */
if ((boxa = boxaSort(boxas, L_SORT_BY_X, L_SORT_INCREASING, &naindex))
== NULL)
return (BOXAA *)ERROR_PTR("boxa not made", procName, NULL);
/* First pass: assign taller boxes to boxa by row */
nt = boxaGetCount(boxa);
baa = boxaaCreate(0);
naa = numaaCreate(0);
boxae = boxaCreate(0); /* save small height boxes here */
nae = numaCreate(0); /* keep track of small height boxes */
for (i = 0; i < nt; i++) {
box = boxaGetBox(boxa, i, L_CLONE);
boxGetGeometry(box, NULL, NULL, NULL, &h);
if (h < minh1) { /* save for 2nd pass */
boxaAddBox(boxae, box, L_INSERT);
numaAddNumber(nae, i);
}
else {
n = boxaaGetCount(baa);
boxaaAlignBox(baa, box, delta1, &index);
if (index < n) { /* append to an existing boxa */
boxaaAddBox(baa, index, box, L_INSERT);
}
else { /* doesn't align, need new boxa */
boxan = boxaCreate(0);
boxaAddBox(boxan, box, L_INSERT);
boxaaAddBoxa(baa, boxan, L_INSERT);
nan = numaCreate(0);
numaaAddNuma(naa, nan, L_INSERT);
}
numaGetIValue(naindex, i, &ival);
numaaAddNumber(naa, index, ival);
}
}
boxaDestroy(&boxa);
numaDestroy(&naindex);
/* Second pass: feed in small height boxes;
* TODO: this correctly, using local y position! */
ne = boxaGetCount(boxae);
for (i = 0; i < ne; i++) {
box = boxaGetBox(boxae, i, L_CLONE);
n = boxaaGetCount(baa);
boxaaAlignBox(baa, box, delta2, &index);
if (index < n) { /* append to an existing boxa */
boxaaAddBox(baa, index, box, L_INSERT);
}
else { /* doesn't align, need new boxa */
boxan = boxaCreate(0);
boxaAddBox(boxan, box, L_INSERT);
boxaaAddBoxa(baa, boxan, L_INSERT);
nan = numaCreate(0);
numaaAddNuma(naa, nan, L_INSERT);
}
numaGetIValue(nae, i, &ival); /* location in original boxas */
numaaAddNumber(naa, index, ival);
}
/* Sort each boxa in the boxaa */
m = boxaaGetCount(baa);
for (i = 0; i < m; i++) {
boxat1 = boxaaGetBoxa(baa, i, L_CLONE);
boxat2 = boxaSort(boxat1, L_SORT_BY_X, L_SORT_INCREASING, &nah);
boxaaReplaceBoxa(baa, i, boxat2);
nat1 = numaaGetNuma(naa, i, L_CLONE);
nat2 = numaSortByIndex(nat1, nah);
numaaReplaceNuma(naa, i, nat2);
boxaDestroy(&boxat1);
numaDestroy(&nat1);
numaDestroy(&nah);
}
/* Sort boxa vertically within boxaa, using the first box
* in each boxa. */
m = boxaaGetCount(baa);
boxav = boxaCreate(m); /* holds first box in each boxa in baa */
naad = numaaCreate(m);
if (pnaad)
*pnaad = naad;
baad = boxaaCreate(m);
for (i = 0; i < m; i++) {
boxat1 = boxaaGetBoxa(baa, i, L_CLONE);
box = boxaGetBox(boxat1, 0, L_CLONE);
boxaAddBox(boxav, box, L_INSERT);
boxaDestroy(&boxat1);
}
boxavs = boxaSort(boxav, L_SORT_BY_Y, L_SORT_INCREASING, &nav);
for (i = 0; i < m; i++) {
numaGetIValue(nav, i, &index);
boxa = boxaaGetBoxa(baa, index, L_CLONE);
boxaaAddBoxa(baad, boxa, L_INSERT);
nad = numaaGetNuma(naa, index, L_CLONE);
numaaAddNuma(naad, nad, L_INSERT);
}
/* fprintf(stderr, "box count = %d, numaa count = %d\n", nt,
numaaGetNumberCount(naad)); */
boxaaDestroy(&baa);
boxaDestroy(&boxav);
boxaDestroy(&boxavs);
boxaDestroy(&boxae);
numaDestroy(&nav);
numaDestroy(&nae);
numaaDestroy(&naa);
if (!pnaad)
numaaDestroy(&naad);
return baad;
}