/*!
* pixDisplayWriteFormat()
*
* Input: pix (1, 2, 4, 8, 16, 32 bpp)
* reduction (-1 to reset/erase; 0 to disable;
* otherwise this is a reduction factor)
* format (IFF_PNG or IFF_JFIF_JPEG)
* Return: 0 if OK; 1 on error
*
* Notes:
* (1) This writes files if reduction > 0. These can be displayed using
* pixDisplayMultiple("/tmp/junk_write_display*");
* (2) All previously written files can be erased by calling with
* reduction < 0; the value of pixs is ignored.
* (3) If reduction > 1 and depth == 1, this does a scale-to-gray
* reduction.
* (4) This function uses a static internal variable to number
* output files written by a single process. Behavior
* with a shared library may be unpredictable.
* (5) Output file format is as follows:
* format == IFF_JFIF_JPEG:
* png if d < 8 or d == 16 or if the output pix
* has a colormap. Otherwise, output is jpg.
* format == IFF_PNG:
* png (lossless) on all images.
* (6) For 16 bpp, the choice of full dynamic range with log scale
* is the best for displaying these images. Alternative outputs are
* pix8 = pixMaxDynamicRange(pixt, L_LINEAR_SCALE);
* pix8 = pixConvert16To8(pixt, 0); // low order byte
* pix8 = pixConvert16To8(pixt, 1); // high order byte
*/
l_int32
pixDisplayWriteFormat(PIX *pixs,
l_int32 reduction,
l_int32 format)
{
char buffer[L_BUF_SIZE];
l_float32 scale;
PIX *pixt, *pix8;
static l_int32 index = 0; /* caution: not .so or thread safe */
PROCNAME("pixDisplayWriteFormat");
if (reduction == 0) return 0;
if (reduction < 0) {
index = 0; /* reset; this will cause erasure at next call to write */
return 0;
}
if (format != IFF_JFIF_JPEG && format != IFF_PNG)
return ERROR_INT("invalid format", procName, 1);
if (!pixs)
return ERROR_INT("pixs not defined", procName, 1);
if (index == 0) {
snprintf(buffer, L_BUF_SIZE,
"rm -f /tmp/junk_write_display.*.png /tmp/junk_write_display.*.jpg");
system(buffer);
}
index++;
if (reduction == 1)
pixt = pixClone(pixs);
else {
scale = 1. / (l_float32)reduction;
if (pixGetDepth(pixs) == 1)
pixt = pixScaleToGray(pixs, scale);
else
pixt = pixScale(pixs, scale, scale);
}
if (pixGetDepth(pixt) == 16) {
pix8 = pixMaxDynamicRange(pixt, L_LOG_SCALE);
snprintf(buffer, L_BUF_SIZE, "/tmp/junk_write_display.%03d.png", index);
pixWrite(buffer, pix8, IFF_PNG);
pixDestroy(&pix8);
}
else if (pixGetDepth(pixt) < 8 || pixGetColormap(pixt) ||
format == IFF_PNG) {
snprintf(buffer, L_BUF_SIZE, "/tmp/junk_write_display.%03d.png", index);
pixWrite(buffer, pixt, IFF_PNG);
}
else {
snprintf(buffer, L_BUF_SIZE, "/tmp/junk_write_display.%03d.jpg", index);
pixWrite(buffer, pixt, format);
}
pixDestroy(&pixt);
return 0;
}
main(int argc,
char **argv)
{
char *filein, *fileout;
l_int32 d;
l_float32 scalex, scaley;
PIX *pixs, *pixd;
static char mainName[] = "scaletest1";
if (argc != 5)
return ERROR_INT(" Syntax: scaletest1 filein scalex scaley fileout",
mainName, 1);
filein = argv[1];
scalex = atof(argv[2]);
scaley = atof(argv[3]);
fileout = argv[4];
if ((pixs = pixRead(filein)) == NULL)
return ERROR_INT("pixs not made", mainName, 1);
/* choose type of scaling operation */
#if 1
pixd = pixScale(pixs, scalex, scaley);
#elif 0
pixd = pixScaleLI(pixs, scalex, scaley);
#elif 0
pixd = pixScaleSmooth(pixs, scalex, scaley);
#elif 0
pixd = pixScaleAreaMap(pixs, scalex, scaley);
#elif 0
pixd = pixScaleBySampling(pixs, scalex, scaley);
#else
pixd = pixScaleToGray(pixs, scalex);
#endif
d = pixGetDepth(pixd);
#if 1
if (d <= 8)
pixWrite(fileout, pixd, IFF_PNG);
else
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
#else
pixWrite(fileout, pixd, IFF_PNG);
#endif
pixDestroy(&pixs);
pixDestroy(&pixd);
return 0;
}
/*!
* pixSaveTiledOutline()
*
* Input: pixs (1, 2, 4, 8, 32 bpp)
* pixa (the pix are accumulated here)
* scalefactor (0.0 to disable; otherwise this is a scale factor)
* newrow (0 if placed on the same row as previous; 1 otherwise)
* space (horizontal and vertical spacing, in pixels)
* linewidth (width of added outline for image; 0 for no outline)
* dp (depth of pixa; 8 or 32 bpp; only used on first call)
* Return: 0 if OK, 1 on error.
*
* Notes:
* (1) Before calling this function for the first time, use
* pixaCreate() to make the @pixa that will accumulate the pix.
* This is passed in each time pixSaveTiled() is called.
* (2) @scalefactor scales the input image. After scaling and
* possible depth conversion, the image is saved in the input
* pixa, along with a box that specifies the location to
* place it when tiled later. Disable saving the pix by
* setting @scalefactor == 0.0.
* (3) @newrow and @space specify the location of the new pix
* with respect to the last one(s) that were entered.
* (4) @dp specifies the depth at which all pix are saved. It can
* be only 8 or 32 bpp. Any colormap is removed. This is only
* used at the first invocation.
* (5) This function uses two variables from call to call.
* If they were static, the function would not be .so or thread
* safe, and furthermore, there would be interference with two or
* more pixa accumulating images at a time. Consequently,
* we use the first pix in the pixa to store and obtain both
* the depth and the current position of the bottom (one pixel
* below the lowest image raster line when laid out using
* the boxa). The bottom variable is stored in the input format
* field, which is the only field available for storing an int.
*/
l_int32
pixSaveTiledOutline(PIX *pixs,
PIXA *pixa,
l_float32 scalefactor,
l_int32 newrow,
l_int32 space,
l_int32 linewidth,
l_int32 dp)
{
l_int32 n, top, left, bx, by, bw, w, h, depth, bottom;
BOX *box;
PIX *pix1, *pix2, *pix3, *pix4;
PROCNAME("pixSaveTiledOutline");
if (scalefactor == 0.0) return 0;
if (!pixs)
return ERROR_INT("pixs not defined", procName, 1);
if (!pixa)
return ERROR_INT("pixa not defined", procName, 1);
n = pixaGetCount(pixa);
if (n == 0) {
bottom = 0;
if (dp != 8 && dp != 32) {
L_WARNING("dp not 8 or 32 bpp; using 32\n", procName);
depth = 32;
} else {
depth = dp;
}
} else { /* extract the depth and bottom params from the first pix */
pix1 = pixaGetPix(pixa, 0, L_CLONE);
depth = pixGetDepth(pix1);
bottom = pixGetInputFormat(pix1); /* not typical usage! */
pixDestroy(&pix1);
}
/* Remove colormap if it exists; otherwise a copy. This
* guarantees that pix4 is not a clone of pixs. */
pix1 = pixRemoveColormapGeneral(pixs, REMOVE_CMAP_BASED_ON_SRC, L_COPY);
/* Scale and convert to output depth */
if (scalefactor == 1.0) {
pix2 = pixClone(pix1);
} else if (scalefactor > 1.0) {
pix2 = pixScale(pix1, scalefactor, scalefactor);
} else if (scalefactor < 1.0) {
if (pixGetDepth(pix1) == 1)
pix2 = pixScaleToGray(pix1, scalefactor);
else
pix2 = pixScale(pix1, scalefactor, scalefactor);
}
pixDestroy(&pix1);
if (depth == 8)
pix3 = pixConvertTo8(pix2, 0);
else
pix3 = pixConvertTo32(pix2);
pixDestroy(&pix2);
/* Add black outline */
if (linewidth > 0)
pix4 = pixAddBorder(pix3, linewidth, 0);
else
pix4 = pixClone(pix3);
pixDestroy(&pix3);
/* Find position of current pix (UL corner plus size) */
if (n == 0) {
top = 0;
left = 0;
} else if (newrow == 1) {
top = bottom + space;
left = 0;
} else if (n > 0) {
pixaGetBoxGeometry(pixa, n - 1, &bx, &by, &bw, NULL);
top = by;
left = bx + bw + space;
}
pixGetDimensions(pix4, &w, &h, NULL);
bottom = L_MAX(bottom, top + h);
box = boxCreate(left, top, w, h);
pixaAddPix(pixa, pix4, L_INSERT);
pixaAddBox(pixa, box, L_INSERT);
/* Save the new bottom value */
pix1 = pixaGetPix(pixa, 0, L_CLONE);
pixSetInputFormat(pix1, bottom); /* not typical usage! */
pixDestroy(&pix1);
return 0;
}
/*!
* \brief pixDisplayWriteFormat()
*
* \param[in] pix 1, 2, 4, 8, 16, 32 bpp
* \param[in] reduction -1 to erase and reset; 0 to disable;
* otherwise this is a reduction factor
* \param[in] format IFF_DEFAULT or IFF_PNG
* \return 0 if OK; 1 on error
*
* <pre>
* Notes:
* (1) This writes files with pathnames "/tmp/lept/display/file.*"
* if reduction \> 0. These can be collected into a pdf using
* pixDisplayMultiple();
* (2) Before writing a set of files, call
* pixDisplayWrite(NULL, -1);
* This erases any previously written files in that directory.
* (3) If reduction \> 1 and depth == 1, this does a scale-to-gray
* reduction.
* (4) This function uses a static internal variable to number
* output files written by a single process. Behavior
* with a shared library may be unpredictable.
* (5) Output file format is as follows:
* format == IFF_DEFAULT:
* png if d \< 8 or d == 16 or if the output pix
* has a colormap. Otherwise, output is jpg.
* format == IFF_PNG:
* png (lossless) on all images.
* (6) For 16 bpp, the choice of full dynamic range with log scale
* is the best for displaying these images. Alternative outputs are
* pix8 = pixMaxDynamicRange(pixt, L_LINEAR_SCALE);
* pix8 = pixConvert16To8(pixt, 0); // low order byte
* pix8 = pixConvert16To8(pixt, 1); // high order byte
* </pre>
*/
l_int32
pixDisplayWriteFormat(PIX *pixs,
l_int32 reduction,
l_int32 format)
{
char buf[L_BUF_SIZE];
char *fname;
l_float32 scale;
PIX *pix1, *pix2;
static l_int32 index = 0; /* caution: not .so or thread safe */
PROCNAME("pixDisplayWriteFormat");
if (reduction == 0) return 0;
if (reduction < 0) { /* initialize */
lept_rmdir("lept/display");
index = 0;
return 0;
}
if (!pixs)
return ERROR_INT("pixs not defined", procName, 1);
if (format != IFF_DEFAULT && format != IFF_PNG) {
L_INFO("invalid format; using default\n", procName);
format = IFF_DEFAULT;
}
if (index == 0)
lept_mkdir("lept/display");
index++;
if (reduction == 1) {
pix1 = pixClone(pixs);
} else {
scale = 1. / (l_float32)reduction;
if (pixGetDepth(pixs) == 1)
pix1 = pixScaleToGray(pixs, scale);
else
pix1 = pixScale(pixs, scale, scale);
}
if (pixGetDepth(pix1) == 16) {
pix2 = pixMaxDynamicRange(pix1, L_LOG_SCALE);
snprintf(buf, L_BUF_SIZE, "file.%03d.png", index);
fname = genPathname("/tmp/lept/display", buf);
pixWrite(fname, pix2, IFF_PNG);
pixDestroy(&pix2);
} else if (pixGetDepth(pix1) < 8 || pixGetColormap(pix1) ||
format == IFF_PNG) {
snprintf(buf, L_BUF_SIZE, "file.%03d.png", index);
fname = genPathname("/tmp/lept/display", buf);
pixWrite(fname, pix1, IFF_PNG);
} else {
snprintf(buf, L_BUF_SIZE, "file.%03d.jpg", index);
fname = genPathname("/tmp/lept/display", buf);
pixWrite(fname, pix1, format);
}
LEPT_FREE(fname);
pixDestroy(&pix1);
return 0;
}
/*!
* pixSaveTiledOutline()
*
* Input: pixs (1, 2, 4, 8, 32 bpp)
* pixa (the pix are accumulated here)
* reduction (0 to disable; otherwise this is a reduction factor)
* newrow (0 if placed on the same row as previous; 1 otherwise)
* space (horizontal and vertical spacing, in pixels)
* linewidth (width of added outline for image; 0 for no outline)
* dp (depth of pixa; 8 or 32 bpp; only used on first call)
* Return: 0 if OK, 1 on error.
*
* Notes:
* (1) Before calling this function for the first time, use
* pixaCreate() to make the @pixa that will accumulate the pix.
* This is passed in each time pixSaveTiled() is called.
* (2) @reduction is the integer reduction factor for the input
* image. After reduction and possible depth conversion,
* the image is saved in the input pixa, along with a box
* that specifies the location to place it when tiled later.
* Disable saving the pix by setting reduction == 0.
* (3) @newrow and @space specify the location of the new pix
* with respect to the last one(s) that were entered.
* (4) @dp specifies the depth at which all pix are saved. It can
* be only 8 or 32 bpp. Any colormap is removed. This is only
* used at the first invocation.
* (5) This function uses two variables from call to call.
* If they were static, the function would not be .so or thread
* safe, and furthermore, there would be interference with two or
* more pixa accumulating images at a time. Consequently,
* we use the first pix in the pixa to store and obtain both
* the depth and the current position of the bottom (one pixel
* below the lowest image raster line when laid out using
* the boxa). The bottom variable is stored in the input format
* field, which is the only field available for storing an int.
*/
l_int32
pixSaveTiledOutline(PIX *pixs,
PIXA *pixa,
l_int32 reduction,
l_int32 newrow,
l_int32 space,
l_int32 linewidth,
l_int32 dp)
{
l_int32 n, top, left, bx, by, bw, w, h, depth, bottom;
l_float32 scale;
BOX *box;
PIX *pix, *pixt1, *pixt2, *pixt3;
PROCNAME("pixSaveTiledOutline");
if (reduction == 0) return 0;
if (!pixs)
return ERROR_INT("pixs not defined", procName, 1);
if (!pixa)
return ERROR_INT("pixa not defined", procName, 1);
n = pixaGetCount(pixa);
if (n == 0) {
bottom = 0;
if (dp != 8 && dp != 32) {
L_WARNING("dp not 8 or 32 bpp; using 32", procName);
depth = 32;
} else
depth = dp;
}
else { /* extract the depth and bottom params from the first pix */
pix = pixaGetPix(pixa, 0, L_CLONE);
depth = pixGetDepth(pix);
bottom = pixGetInputFormat(pix); /* not typical usage! */
pixDestroy(&pix);
}
/* Scale and convert to output depth */
if (reduction == 1)
pixt1 = pixClone(pixs);
else {
scale = 1. / (l_float32)reduction;
if (pixGetDepth(pixs) == 1)
pixt1 = pixScaleToGray(pixs, scale);
else
pixt1 = pixScale(pixs, scale, scale);
}
if (depth == 8)
pixt2 = pixConvertTo8(pixt1, 0);
else
pixt2 = pixConvertTo32(pixt1);
pixDestroy(&pixt1);
/* Add black outline */
if (linewidth > 0)
pixt3 = pixAddBorder(pixt2, linewidth, 0);
else
pixt3 = pixClone(pixt2);
pixDestroy(&pixt2);
/* Find position of current pix (UL corner plus size) */
if (n == 0) {
top = 0;
left = 0;
}
else if (newrow == 1) {
top = bottom + space;
left = 0;
}
else if (n > 0) {
pixaGetBoxGeometry(pixa, n - 1, &bx, &by, &bw, NULL);
top = by;
left = bx + bw + space;
}
pixGetDimensions(pixt3, &w, &h, NULL);
bottom = L_MAX(bottom, top + h);
box = boxCreate(left, top, w, h);
pixaAddPix(pixa, pixt3, L_INSERT);
pixaAddBox(pixa, box, L_INSERT);
/* Save the new bottom value */
pix = pixaGetPix(pixa, 0, L_CLONE);
pixSetInputFormat(pix, bottom); /* not typical usage! */
pixDestroy(&pix);
return 0;
}
/*!
* pixaDisplayTiledAndScaled()
*
* Input: pixa
* outdepth (output depth: 1, 8 or 32 bpp)
* tilewidth (each pix is scaled to this width)
* ncols (number of tiles in each row)
* background (0 for white, 1 for black; this is the color
* of the spacing between the images)
* spacing (between images, and on outside)
* border (width of additional black border on each image;
* use 0 for no border)
* Return: pix of tiled images, or null on error
*
* Notes:
* (1) This can be used to tile a number of renderings of
* an image that are at different scales and depths.
* (2) Each image, after scaling and optionally adding the
* black border, has width 'tilewidth'. Thus, the border does
* not affect the spacing between the image tiles. The
* maximum allowed border width is tilewidth / 5.
*/
PIX *
pixaDisplayTiledAndScaled(PIXA *pixa,
l_int32 outdepth,
l_int32 tilewidth,
l_int32 ncols,
l_int32 background,
l_int32 spacing,
l_int32 border)
{
l_int32 x, y, w, h, wd, hd, d;
l_int32 i, n, nrows, maxht, ninrow, irow, bordval;
l_int32 *rowht;
l_float32 scalefact;
PIX *pix, *pixn, *pixt, *pixb, *pixd;
PIXA *pixan;
PROCNAME("pixaDisplayTiledAndScaled");
if (!pixa)
return (PIX *)ERROR_PTR("pixa not defined", procName, NULL);
if (outdepth != 1 && outdepth != 8 && outdepth != 32)
return (PIX *)ERROR_PTR("outdepth not in {1, 8, 32}", procName, NULL);
if (border < 0 || border > tilewidth / 5)
border = 0;
if ((n = pixaGetCount(pixa)) == 0)
return (PIX *)ERROR_PTR("no components", procName, NULL);
/* Normalize scale and depth for each pix; optionally add border */
pixan = pixaCreate(n);
bordval = (outdepth == 1) ? 1 : 0;
for (i = 0; i < n; i++) {
if ((pix = pixaGetPix(pixa, i, L_CLONE)) == NULL)
continue;
pixGetDimensions(pix, &w, &h, &d);
scalefact = (l_float32)(tilewidth - 2 * border) / (l_float32)w;
if (d == 1 && outdepth > 1 && scalefact < 1.0)
pixt = pixScaleToGray(pix, scalefact);
else
pixt = pixScale(pix, scalefact, scalefact);
if (outdepth == 1)
pixn = pixConvertTo1(pixt, 128);
else if (outdepth == 8)
pixn = pixConvertTo8(pixt, FALSE);
else /* outdepth == 32 */
pixn = pixConvertTo32(pixt);
pixDestroy(&pixt);
if (border)
pixb = pixAddBorder(pixn, border, bordval);
else
pixb = pixClone(pixn);
pixaAddPix(pixan, pixb, L_INSERT);
pixDestroy(&pix);
pixDestroy(&pixn);
}
if ((n = pixaGetCount(pixan)) == 0) { /* should not have changed! */
pixaDestroy(&pixan);
return (PIX *)ERROR_PTR("no components", procName, NULL);
}
/* Determine the size of each row and of pixd */
wd = tilewidth * ncols + spacing * (ncols + 1);
nrows = (n + ncols - 1) / ncols;
if ((rowht = (l_int32 *)CALLOC(nrows, sizeof(l_int32))) == NULL)
return (PIX *)ERROR_PTR("rowht array not made", procName, NULL);
maxht = 0;
ninrow = 0;
irow = 0;
for (i = 0; i < n; i++) {
pix = pixaGetPix(pixan, i, L_CLONE);
ninrow++;
pixGetDimensions(pix, &w, &h, NULL);
maxht = L_MAX(h, maxht);
if (ninrow == ncols) {
rowht[irow] = maxht;
maxht = ninrow = 0; /* reset */
irow++;
}
pixDestroy(&pix);
}
if (ninrow > 0) { /* last fencepost */
rowht[irow] = maxht;
irow++; /* total number of rows */
}
nrows = irow;
hd = spacing * (nrows + 1);
for (i = 0; i < nrows; i++)
hd += rowht[i];
pixd = pixCreate(wd, hd, outdepth);
if ((background == 1 && outdepth == 1) ||
(background == 0 && outdepth != 1))
pixSetAll(pixd);
/* Now blit images to pixd */
x = y = spacing;
irow = 0;
for (i = 0; i < n; i++) {
pix = pixaGetPix(pixan, i, L_CLONE);
pixGetDimensions(pix, &w, &h, NULL);
if (i && ((i % ncols) == 0)) { /* start new row */
x = spacing;
y += spacing + rowht[irow];
irow++;
}
pixRasterop(pixd, x, y, w, h, PIX_SRC, pix, 0, 0);
x += tilewidth + spacing;
pixDestroy(&pix);
}
pixaDestroy(&pixan);
FREE(rowht);
return pixd;
}
int main(int argc,
char **argv)
{
char bufname[256];
l_int32 i, w, h;
l_float32 *mat1, *mat2, *mat3, *mat1i, *mat2i, *mat3i, *matdinv;
l_float32 matd[9], matdi[9];
BOXA *boxa, *boxa2;
PIX *pix, *pixs, *pixb, *pixg, *pixc, *pixcs;
PIX *pixd, *pix1, *pix2, *pix3;
PIXA *pixa;
PTA *ptas, *ptad;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
pix = pixRead("feyn.tif");
pixs = pixScale(pix, 0.22, 0.22);
pixDestroy(&pix);
#if ALL
/* Test invertability of sequential. */
fprintf(stderr, "Test invertability of sequential\n");
pixa = pixaCreate(0);
for (i = 0; i < 3; i++) {
pixb = pixAddBorder(pixs, ADDED_BORDER_PIXELS, 0);
MakePtas(i, &ptas, &ptad);
pix1 = pixAffineSequential(pixb, ptad, ptas, 0, 0);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 0,3,6 */
pixaAddPix(pixa, pix1, L_INSERT);
pix2 = pixAffineSequential(pix1, ptas, ptad, 0, 0);
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 1,4,7 */
pixaAddPix(pixa, pix2, L_INSERT);
pixd = pixRemoveBorder(pix2, ADDED_BORDER_PIXELS);
pixXor(pixd, pixd, pixs);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 2,5,8 */
pixaAddPix(pixa, pixd, L_INSERT);
pixDestroy(&pixb);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
}
pix1 = pixaDisplayTiledInColumns(pixa, 3, 1.0, 20, 3);
pix2 = pixScaleToGray(pix1, 0.2);
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 9 */
pixDisplayWithTitle(pix2, 0, 100, NULL, rp->display);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixaDestroy(&pixa);
#endif
#if ALL
/* Test invertability of sampling */
fprintf(stderr, "Test invertability of sampling\n");
pixa = pixaCreate(0);
for (i = 0; i < 3; i++) {
pixb = pixAddBorder(pixs, ADDED_BORDER_PIXELS, 0);
MakePtas(i, &ptas, &ptad);
pix1 = pixAffineSampledPta(pixb, ptad, ptas, L_BRING_IN_WHITE);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 10,13,16 */
pixaAddPix(pixa, pix1, L_INSERT);
pix2 = pixAffineSampledPta(pix1, ptas, ptad, L_BRING_IN_WHITE);
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 11,14,17 */
pixaAddPix(pixa, pix2, L_INSERT);
pixd = pixRemoveBorder(pix2, ADDED_BORDER_PIXELS);
pixXor(pixd, pixd, pixs);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 12,15,18 */
pixaAddPix(pixa, pixd, L_INSERT);
pixDestroy(&pixb);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
}
pix1 = pixaDisplayTiledInColumns(pixa, 3, 1.0, 20, 3);
pix2 = pixScaleToGray(pix1, 0.2);
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 19 */
pixDisplayWithTitle(pix2, 200, 100, NULL, rp->display);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pixs);
pixaDestroy(&pixa);
#endif
#if ALL
/* Test invertability of interpolation on grayscale */
fprintf(stderr, "Test invertability of grayscale interpolation\n");
pix = pixRead("feyn.tif");
pixg = pixScaleToGray3(pix);
pixDestroy(&pix);
pixa = pixaCreate(0);
for (i = 0; i < 3; i++) {
pixb = pixAddBorder(pixg, ADDED_BORDER_PIXELS / 3, 255);
MakePtas(i, &ptas, &ptad);
pix1 = pixAffinePta(pixb, ptad, ptas, L_BRING_IN_WHITE);
regTestWritePixAndCheck(rp, pix1, IFF_JFIF_JPEG); /* 20,23,26 */
pixaAddPix(pixa, pix1, L_INSERT);
pix2 = pixAffinePta(pix1, ptas, ptad, L_BRING_IN_WHITE);
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 21,24,27 */
pixaAddPix(pixa, pix2, L_INSERT);
pixd = pixRemoveBorder(pix2, ADDED_BORDER_PIXELS / 3);
pixXor(pixd, pixd, pixg);
pixInvert(pixd, pixd);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 22,25,28 */
pixaAddPix(pixa, pixd, L_INSERT);
pixDestroy(&pixb);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
}
pix1 = pixaDisplayTiledInColumns(pixa, 3, 1.0, 20, 3);
pix2 = pixScale(pix1, 0.2, 0.2);
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 29 */
pixDisplayWithTitle(pix2, 400, 100, NULL, rp->display);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pixg);
pixaDestroy(&pixa);
#endif
#if ALL
/* Test invertability of interpolation on color */
fprintf(stderr, "Test invertability of color interpolation\n");
pixa = pixaCreate(0);
pixc = pixRead("test24.jpg");
pixcs = pixScale(pixc, 0.3, 0.3);
for (i = 0; i < 3; i++) {
pixb = pixAddBorder(pixcs, ADDED_BORDER_PIXELS / 4, 0xffffff00);
MakePtas(i, &ptas, &ptad);
pix1 = pixAffinePta(pixb, ptad, ptas, L_BRING_IN_WHITE);
regTestWritePixAndCheck(rp, pix1, IFF_JFIF_JPEG); /* 30,33,36 */
pixaAddPix(pixa, pix1, L_INSERT);
pix2 = pixAffinePta(pix1, ptas, ptad, L_BRING_IN_WHITE);
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 31,34,37 */
pixaAddPix(pixa, pix2, L_INSERT);
pixd = pixRemoveBorder(pix2, ADDED_BORDER_PIXELS / 4);
pixXor(pixd, pixd, pixcs);
pixInvert(pixd, pixd);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 32,35,38 */
pixaAddPix(pixa, pixd, L_INSERT);
pixDestroy(&pixb);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
}
pix1 = pixaDisplayTiledInColumns(pixa, 3, 1.0, 20, 3);
pix2 = pixScale(pix1, 0.25, 0.25);
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 39 */
pixDisplayWithTitle(pix2, 600, 100, NULL, rp->display);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pixc);
pixaDestroy(&pixa);
#endif
#if ALL
/* Comparison between sequential and sampling */
fprintf(stderr, "Compare sequential with sampling\n");
pix = pixRead("feyn.tif");
pixs = pixScale(pix, 0.22, 0.22);
pixDestroy(&pix);
MakePtas(3, &ptas, &ptad);
pixa = pixaCreate(0);
/* Use sequential transforms */
pix1 = pixAffineSequential(pixs, ptas, ptad,
ADDED_BORDER_PIXELS, ADDED_BORDER_PIXELS);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 40 */
pixaAddPix(pixa, pix1, L_INSERT);
/* Use sampled transform */
pix2 = pixAffineSampledPta(pixs, ptas, ptad, L_BRING_IN_WHITE);
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 41 */
pixaAddPix(pixa, pix2, L_COPY);
/* Compare the results */
pixXor(pix2, pix2, pix1);
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 42 */
pixaAddPix(pixa, pix2, L_INSERT);
pix1 = pixaDisplayTiledInColumns(pixa, 3, 1.0, 20, 3);
pix2 = pixScale(pix1, 0.5, 0.5);
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 43 */
pixDisplayWithTitle(pix2, 800, 100, NULL, rp->display);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pixs);
pixaDestroy(&pixa);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
#endif
#if ALL
/* Test with large distortion */
fprintf(stderr, "Test with large distortion\n");
MakePtas(4, &ptas, &ptad);
pixa = pixaCreate(0);
pix = pixRead("feyn.tif");
pixg = pixScaleToGray6(pix);
pixDestroy(&pix);
pix1 = pixAffineSequential(pixg, ptas, ptad, 0, 0);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 44 */
pixaAddPix(pixa, pix1, L_COPY);
pix2 = pixAffineSampledPta(pixg, ptas, ptad, L_BRING_IN_WHITE);
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 45 */
pixaAddPix(pixa, pix2, L_COPY);
pix3 = pixAffinePta(pixg, ptas, ptad, L_BRING_IN_WHITE);
regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 46 */
pixaAddPix(pixa, pix3, L_INSERT);
pixXor(pix1, pix1, pix2);
pixInvert(pix1, pix1);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 47 */
pixaAddPix(pixa, pix1, L_INSERT);
pixXor(pix2, pix2, pix3);
pixInvert(pix2, pix2);
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 48 */
pixaAddPix(pixa, pix2, L_INSERT);
pix1 = pixaDisplayTiledInColumns(pixa, 5, 1.0, 20, 3);
pix2 = pixScale(pix1, 0.8, 0.8);
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 49 */
pixDisplayWithTitle(pix2, 1000, 100, NULL, rp->display);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pixg);
pixaDestroy(&pixa);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
#endif
#if ALL
/* Set up pix and boxa */
fprintf(stderr, "Test affine transforms and inverses on pix and boxa\n");
pixa = pixaCreate(0);
pix = pixRead("lucasta.1.300.tif");
pixTranslate(pix, pix, 70, 0, L_BRING_IN_WHITE);
pix1 = pixCloseBrick(NULL, pix, 14, 5);
pixOpenBrick(pix1, pix1, 1, 2);
boxa = pixConnComp(pix1, NULL, 8);
pixs = pixConvertTo32(pix);
pixGetDimensions(pixs, &w, &h, NULL);
pixc = pixCopy(NULL, pixs);
RenderHashedBoxa(pixc, boxa, 113);
regTestWritePixAndCheck(rp, pixc, IFF_PNG); /* 50 */
pixaAddPix(pixa, pixc, L_INSERT);
pixDestroy(&pix);
pixDestroy(&pix1);
/* Set up an affine transform in matd, and apply it to boxa */
mat1 = createMatrix2dTranslate(SHIFTX, SHIFTY);
mat2 = createMatrix2dScale(SCALEX, SCALEY);
mat3 = createMatrix2dRotate(w / 2, h / 2, ROTATION);
l_productMat3(mat3, mat2, mat1, matd, 3);
boxa2 = boxaAffineTransform(boxa, matd);
/* Set up the inverse transform --> matdi */
mat1i = createMatrix2dTranslate(-SHIFTX, -SHIFTY);
mat2i = createMatrix2dScale(1.0/ SCALEX, 1.0 / SCALEY);
mat3i = createMatrix2dRotate(w / 2, h / 2, -ROTATION);
l_productMat3(mat1i, mat2i, mat3i, matdi, 3);
/* Invert the original affine transform --> matdinv */
affineInvertXform(matd, &matdinv);
if (rp->display) {
fprintf(stderr, " Affine transform, applied to boxa\n");
for (i = 0; i < 9; i++) {
if (i && (i % 3 == 0)) fprintf(stderr, "\n");
fprintf(stderr, " %7.3f ", matd[i]);
}
fprintf(stderr, "\n Inverse transform, by composing inverse parts");
for (i = 0; i < 9; i++) {
if (i % 3 == 0) fprintf(stderr, "\n");
fprintf(stderr, " %7.3f ", matdi[i]);
}
fprintf(stderr, "\n Inverse transform, by inverting affine xform");
for (i = 0; i < 6; i++) {
if (i % 3 == 0) fprintf(stderr, "\n");
fprintf(stderr, " %7.3f ", matdinv[i]);
}
fprintf(stderr, "\n");
}
/* Apply the inverted affine transform --> pixs */
pixd = pixAffine(pixs, matdinv, L_BRING_IN_WHITE);
RenderHashedBoxa(pixd, boxa2, 513);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 51 */
pixaAddPix(pixa, pixd, L_INSERT);
pix1 = pixaDisplayTiledInColumns(pixa, 2, 1.0, 30, 2);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 52 */
pixDisplayWithTitle(pix1, 1200, 100, NULL, rp->display);
pixDestroy(&pix1);
pixaDestroy(&pixa);
pixDestroy(&pixs);
boxaDestroy(&boxa);
boxaDestroy(&boxa2);
lept_free(mat1);
lept_free(mat2);
lept_free(mat3);
lept_free(mat1i);
lept_free(mat2i);
lept_free(mat3i);
lept_free(matdinv);
#endif
return regTestCleanup(rp);
}
main(int argc,
char **argv)
{
l_int32 h;
l_float32 scalefactor;
BOX *box;
BOXA *boxa1, *boxa2;
BOXAA *baa;
PIX *pix1, *pix2, *pix3, *pix4, *pix5, *pix6, *pix7, *pix8, *pix9;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
lept_rmdir("segtest");
lept_mkdir("segtest");
baa = boxaaCreate(5);
/* Image region input. */
pix1 = pixRead("wet-day.jpg");
pix2 = pixScaleToSize(pix1, WIDTH, 0);
pixWrite("/tmp/segtest/0.jpg", pix2, IFF_JFIF_JPEG);
regTestCheckFile(rp, "/tmp/segtest/0.jpg"); /* 0 */
box = boxCreate(105, 161, 620, 872); /* image region */
boxa1 = boxaCreate(1);
boxaAddBox(boxa1, box, L_INSERT);
boxaaAddBoxa(baa, boxa1, L_INSERT);
pixDestroy(&pix1);
pixDestroy(&pix2);
/* Compute image region at w = 2 * WIDTH */
pix1 = pixRead("candelabrum-11.jpg");
pix2 = pixScaleToSize(pix1, WIDTH, 0);
pix3 = pixConvertTo1(pix2, 100);
pix4 = pixExpandBinaryPower2(pix3, 2); /* w = 2 * WIDTH */
pix5 = pixGenHalftoneMask(pix4, NULL, NULL, 1);
pix6 = pixMorphSequence(pix5, "c20.1 + c1.20", 0);
pix7 = pixMaskConnComp(pix6, 8, &boxa1);
pix8 = pixReduceBinary2(pix7, NULL); /* back to w = WIDTH */
pix9 = pixBackgroundNormSimple(pix2, pix8, NULL);
pixWrite("/tmp/segtest/1.jpg", pix9, IFF_JFIF_JPEG);
regTestCheckFile(rp, "/tmp/segtest/1.jpg"); /* 1 */
boxa2 = boxaTransform(boxa1, 0, 0, 0.5, 0.5); /* back to w = WIDTH */
boxaaAddBoxa(baa, boxa2, L_INSERT);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pix3);
pixDestroy(&pix4);
pixDestroy(&pix5);
pixDestroy(&pix6);
pixDestroy(&pix7);
pixDestroy(&pix8);
pixDestroy(&pix9);
boxaDestroy(&boxa1);
/* Use mask to find image region */
pix1 = pixRead("lion-page.00016.jpg");
pix2 = pixScaleToSize(pix1, WIDTH, 0);
pixWrite("/tmp/segtest/2.jpg", pix2, IFF_JFIF_JPEG);
regTestCheckFile(rp, "/tmp/segtest/2.jpg"); /* 2 */
pix3 = pixRead("lion-mask.00016.tif");
pix4 = pixScaleToSize(pix3, WIDTH, 0);
boxa1 = pixConnComp(pix4, NULL, 8);
boxaaAddBoxa(baa, boxa1, L_INSERT);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pix3);
pixDestroy(&pix4);
/* Compute image region at full res */
pix1 = pixRead("rabi.png");
scalefactor = (l_float32)WIDTH / (l_float32)pixGetWidth(pix1);
pix2 = pixScaleToGray(pix1, scalefactor);
pixWrite("/tmp/segtest/3.jpg", pix2, IFF_JFIF_JPEG);
regTestCheckFile(rp, "/tmp/segtest/3.jpg"); /* 3 */
pix3 = pixGenHalftoneMask(pix1, NULL, NULL, 0);
pix4 = pixMorphSequence(pix3, "c20.1 + c1.20", 0);
boxa1 = pixConnComp(pix4, NULL, 8);
boxa2 = boxaTransform(boxa1, 0, 0, scalefactor, scalefactor);
boxaaAddBoxa(baa, boxa2, L_INSERT);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pix3);
pixDestroy(&pix4);
boxaDestroy(&boxa1);
/* Page with no image regions */
pix1 = pixRead("lucasta-47.jpg");
pix2 = pixScaleToSize(pix1, WIDTH, 0);
boxa1 = boxaCreate(1);
pixWrite("/tmp/segtest/4.jpg", pix2, IFF_JFIF_JPEG);
regTestCheckFile(rp, "/tmp/segtest/4.jpg"); /* 4 */
boxaaAddBoxa(baa, boxa1, L_INSERT);
pixDestroy(&pix1);
pixDestroy(&pix2);
/* Page that is all image */
pix1 = pixRead("map1.jpg");
pix2 = pixScaleToSize(pix1, WIDTH, 0);
pixWrite("/tmp/segtest/5.jpg", pix2, IFF_JFIF_JPEG);
regTestCheckFile(rp, "/tmp/segtest/5.jpg"); /* 5 */
h = pixGetHeight(pix2);
box = boxCreate(0, 0, WIDTH, h);
boxa1 = boxaCreate(1);
boxaAddBox(boxa1, box, L_INSERT);
boxaaAddBoxa(baa, boxa1, L_INSERT);
pixDestroy(&pix1);
pixDestroy(&pix2);
/* Save the boxaa file */
boxaaWrite("/tmp/segtest/seg.baa", baa);
regTestCheckFile(rp, "/tmp/segtest/seg.baa"); /* 6 */
/* Do the conversion */
l_pdfSetDateAndVersion(FALSE);
convertSegmentedFilesToPdf("/tmp/segtest", ".jpg", 100, L_G4_ENCODE,
140, baa, 75, 0.6, "Segmentation Test",
"/tmp/pdfseg.7.pdf");
regTestCheckFile(rp, "/tmp/pdfseg.7.pdf"); /* 7 */
boxaaDestroy(&baa);
return regTestCleanup(rp);
}
main(int argc,
char **argv)
{
PIX *pixs;
l_int32 d;
static char mainName[] = "scaletest2";
if (argc != 2)
return ERROR_INT(" Syntax: scaletest2 filein", mainName, 1);
if ((pixs = pixRead(argv[1])) == NULL)
return ERROR_INT("pixs not made", mainName, 1);
d = pixGetDepth(pixs);
#if 1
/* Integer scale-to-gray functions */
if (d == 1)
{
PIX *pixd;
pixd = pixScaleToGray2(pixs);
pixWrite("/tmp/s2g_2x", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixScaleToGray3(pixs);
pixWrite("/tmp/s2g_3x", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixScaleToGray4(pixs);
pixWrite("/tmp/s2g_4x", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixScaleToGray6(pixs);
pixWrite("/tmp/s2g_6x", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixScaleToGray8(pixs);
pixWrite("/tmp/s2g_8x", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixScaleToGray16(pixs);
pixWrite("/tmp/s2g_16x", pixd, IFF_PNG);
pixDestroy(&pixd);
}
#endif
#if 1
/* Various non-integer scale-to-gray, compared with
* with different ways of getting similar results */
if (d == 1)
{
PIX *pixt, *pixd;
pixd = pixScaleToGray8(pixs);
pixWrite("/tmp/s2g_8.png", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixScaleToGray(pixs, 0.124);
pixWrite("/tmp/s2g_124.png", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixScaleToGray(pixs, 0.284);
pixWrite("/tmp/s2g_284.png", pixd, IFF_PNG);
pixDestroy(&pixd);
pixt = pixScaleToGray4(pixs);
pixd = pixScaleBySampling(pixt, 284./250., 284./250.);
pixWrite("/tmp/s2g_284.2.png", pixd, IFF_PNG);
pixDestroy(&pixt);
pixDestroy(&pixd);
pixt = pixScaleToGray4(pixs);
pixd = pixScaleGrayLI(pixt, 284./250., 284./250.);
pixWrite("/tmp/s2g_284.3.png", pixd, IFF_PNG);
pixDestroy(&pixt);
pixDestroy(&pixd);
pixt = pixScaleBinary(pixs, 284./250., 284./250.);
pixd = pixScaleToGray4(pixt);
pixWrite("/tmp/s2g_284.4.png", pixd, IFF_PNG);
pixDestroy(&pixt);
pixDestroy(&pixd);
pixt = pixScaleToGray4(pixs);
pixd = pixScaleGrayLI(pixt, 0.49, 0.49);
pixWrite("/tmp/s2g_42.png", pixd, IFF_PNG);
pixDestroy(&pixt);
pixDestroy(&pixd);
pixt = pixScaleToGray4(pixs);
pixd = pixScaleSmooth(pixt, 0.49, 0.49);
pixWrite("/tmp/s2g_4sm.png", pixd, IFF_PNG);
pixDestroy(&pixt);
pixDestroy(&pixd);
pixt = pixScaleBinary(pixs, .16/.125, .16/.125);
pixd = pixScaleToGray8(pixt);
pixWrite("/tmp/s2g_16.png", pixd, IFF_PNG);
pixDestroy(&pixt);
pixDestroy(&pixd);
pixd = pixScaleToGray(pixs, .16);
pixWrite("/tmp/s2g_16.2.png", pixd, IFF_PNG);
pixDestroy(&pixd);
}
#endif
#if 1
/* Antialiased (smoothed) reduction, along with sharpening */
if (d != 1)
{
PIX *pixt1, *pixt2;
startTimer();
pixt1 = pixScaleSmooth(pixs, 0.154, 0.154);
fprintf(stderr, "fast scale: %5.3f sec\n", stopTimer());
pixDisplayWithTitle(pixt1, 0, 0, "smooth scaling", DISPLAY);
pixWrite("/tmp/smooth1.png", pixt1, IFF_PNG);
pixt2 = pixUnsharpMasking(pixt1, 1, 0.3);
pixWrite("/tmp/smooth2.png", pixt2, IFF_PNG);
pixDisplayWithTitle(pixt2, 200, 0, "sharp scaling", DISPLAY);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
}
#endif
#if 1
/* Test a large range of scale-to-gray reductions */
if (d == 1)
{
l_int32 i;
l_float32 scale;
PIX *pixd;
for (i = 2; i < 15; i++) {
scale = 1. / (l_float32)i;
startTimer();
pixd = pixScaleToGray(pixs, scale);
fprintf(stderr, "Time for scale %7.3f: %7.3f sec\n",
scale, stopTimer());
pixDisplayWithTitle(pixd, 75 * i, 100, "scaletogray", DISPLAY);
pixDestroy(&pixd);
}
for (i = 8; i < 14; i++) {
scale = 1. / (l_float32)(2 * i);
startTimer();
pixd = pixScaleToGray(pixs, scale);
fprintf(stderr, "Time for scale %7.3f: %7.3f sec\n",
scale, stopTimer());
pixDisplayWithTitle(pixd, 100 * i, 600, "scaletogray", DISPLAY);
pixDestroy(&pixd);
}
}
#endif
#if 1
/* Test the same range of scale-to-gray mipmap reductions */
if (d == 1)
{
l_int32 i;
l_float32 scale;
PIX *pixd;
for (i = 2; i < 15; i++) {
scale = 1. / (l_float32)i;
startTimer();
pixd = pixScaleToGrayMipmap(pixs, scale);
fprintf(stderr, "Time for scale %7.3f: %7.3f sec\n",
scale, stopTimer());
pixDisplayWithTitle(pixd, 75 * i, 100, "scale mipmap", DISPLAY);
pixDestroy(&pixd);
}
for (i = 8; i < 12; i++) {
scale = 1. / (l_float32)(2 * i);
startTimer();
pixd = pixScaleToGrayMipmap(pixs, scale);
fprintf(stderr, "Time for scale %7.3f: %7.3f sec\n",
scale, stopTimer());
pixDisplayWithTitle(pixd, 100 * i, 600, "scale mipmap", DISPLAY);
pixDestroy(&pixd);
}
}
#endif
#if 1
/* Test several methods for antialiased reduction,
* along with sharpening */
if (d != 1)
{
PIX *pixt1, *pixt2, *pixt3, *pixt4, *pixt5, *pixt6, *pixt7;
l_float32 SCALING = 0.27;
l_int32 SIZE = 7;
l_int32 smooth;
l_float32 FRACT = 1.0;
smooth = SIZE / 2;
startTimer();
pixt1 = pixScaleSmooth(pixs, SCALING, SCALING);
fprintf(stderr, "fast scale: %5.3f sec\n", stopTimer());
pixDisplayWithTitle(pixt1, 0, 0, "smooth scaling", DISPLAY);
pixWrite("/tmp/sm_1.png", pixt1, IFF_PNG);
pixt2 = pixUnsharpMasking(pixt1, 1, 0.3);
pixDisplayWithTitle(pixt2, 150, 0, "sharpened scaling", DISPLAY);
startTimer();
pixt3 = pixBlockconv(pixs, smooth, smooth);
pixt4 = pixScaleBySampling(pixt3, SCALING, SCALING);
fprintf(stderr, "slow scale: %5.3f sec\n", stopTimer());
pixDisplayWithTitle(pixt4, 200, 200, "sampled scaling", DISPLAY);
pixWrite("/tmp/sm_2.png", pixt4, IFF_PNG);
startTimer();
pixt5 = pixUnsharpMasking(pixs, smooth, FRACT);
pixt6 = pixBlockconv(pixt5, smooth, smooth);
pixt7 = pixScaleBySampling(pixt6, SCALING, SCALING);
fprintf(stderr, "very slow scale + sharp: %5.3f sec\n", stopTimer());
pixDisplayWithTitle(pixt7, 500, 200, "sampled scaling", DISPLAY);
pixWrite("/tmp/sm_3.jpg", pixt7, IFF_JFIF_JPEG);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
pixDestroy(&pixt3);
pixDestroy(&pixt4);
pixDestroy(&pixt5);
pixDestroy(&pixt6);
pixDestroy(&pixt7);
}
#endif
#if 1
/* Test the color scaling function, comparing the
* special case of scaling factor 2.0 with the
* general case. */
if (d == 32)
{
PIX *pix1, *pix2, *pixd;
NUMA *nar, *nag, *nab, *naseq;
GPLOT *gplot;
startTimer();
pix1 = pixScaleColorLI(pixs, 2.00001, 2.0);
fprintf(stderr, " Time with regular LI: %7.3f\n", stopTimer());
pixWrite("/tmp/color1.jpg", pix1, IFF_JFIF_JPEG);
startTimer();
pix2 = pixScaleColorLI(pixs, 2.0, 2.0);
fprintf(stderr, " Time with 2x LI: %7.3f\n", stopTimer());
pixWrite("/tmp/color2.jpg", pix2, IFF_JFIF_JPEG);
pixd = pixAbsDifference(pix1, pix2);
pixGetColorHistogram(pixd, 1, &nar, &nag, &nab);
naseq = numaMakeSequence(0., 1., 256);
gplot = gplotCreate("/tmp/plot_absdiff", GPLOT_X11, "Number vs diff",
"diff", "number");
gplotSetScaling(gplot, GPLOT_LOG_SCALE_Y);
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(&naseq);
numaDestroy(&nar);
numaDestroy(&nag);
numaDestroy(&nab);
gplotDestroy(&gplot);
}
#endif
#if 1
/* Test the gray LI scaling function, comparing the
* special cases of scaling factor 2.0 and 4.0 with the
* general case */
if (d == 8 || d == 32)
{
PIX *pixt, *pix0, *pix1, *pix2, *pixd;
NUMA *nagray, *naseq;
GPLOT *gplot;
if (d == 8)
pixt = pixClone(pixs);
else
pixt = pixConvertRGBToGray(pixs, 0.33, 0.34, 0.33);
pix0 = pixScaleGrayLI(pixt, 0.5, 0.5);
#if 1
startTimer();
pix1 = pixScaleGrayLI(pix0, 2.00001, 2.0);
fprintf(stderr, " Time with regular LI 2x: %7.3f\n", stopTimer());
startTimer();
pix2 = pixScaleGrayLI(pix0, 2.0, 2.0);
fprintf(stderr, " Time with 2x LI: %7.3f\n", stopTimer());
#else
startTimer();
pix1 = pixScaleGrayLI(pix0, 4.00001, 4.0);
fprintf(stderr, " Time with regular LI 4x: %7.3f\n", stopTimer());
startTimer();
pix2 = pixScaleGrayLI(pix0, 4.0, 4.0);
fprintf(stderr, " Time with 2x LI: %7.3f\n", stopTimer());
#endif
pixWrite("/tmp/gray1", pix1, IFF_JFIF_JPEG);
pixWrite("/tmp/gray2", pix2, IFF_JFIF_JPEG);
pixd = pixAbsDifference(pix1, pix2);
nagray = pixGetGrayHistogram(pixd, 1);
naseq = numaMakeSequence(0., 1., 256);
gplot = gplotCreate("/tmp/g_absdiff", GPLOT_X11, "Number vs diff",
"diff", "number");
gplotSetScaling(gplot, GPLOT_LOG_SCALE_Y);
gplotAddPlot(gplot, naseq, nagray, GPLOT_POINTS, "gray");
gplotMakeOutput(gplot);
pixDestroy(&pixt);
pixDestroy(&pix0);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pixd);
numaDestroy(&naseq);
numaDestroy(&nagray);
gplotDestroy(&gplot);
}
#endif
pixDestroy(&pixs);
return 0;
}
main(int argc,
char **argv)
{
char *infile;
PIX *pixs, *pixg, *pixc, *pixd;
static char mainName[] = "morphseq_reg";
if (argc != 1)
return ERROR_INT(" Syntax: morphseq_reg", mainName, 1);
pixs = pixRead("feyn.tif");
/* 1 bpp */
pixd = pixMorphSequence(pixs, SEQUENCE1, -1);
pixDestroy(&pixd);
pixd = pixMorphSequence(pixs, SEQUENCE1, DISPLAY_SEPARATION);
pixWrite("/tmp/morphseq1.png", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixMorphCompSequence(pixs, SEQUENCE2, -2);
pixDestroy(&pixd);
pixd = pixMorphCompSequence(pixs, SEQUENCE2, DISPLAY_SEPARATION);
pixWrite("/tmp/morphseq2.png", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixMorphSequenceDwa(pixs, SEQUENCE2, -3);
pixDestroy(&pixd);
pixd = pixMorphSequenceDwa(pixs, SEQUENCE2, DISPLAY_SEPARATION);
pixWrite("/tmp/morphseq3.png", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixMorphCompSequenceDwa(pixs, SEQUENCE2, -4);
pixDestroy(&pixd);
pixd = pixMorphCompSequenceDwa(pixs, SEQUENCE2, DISPLAY_SEPARATION);
pixWrite("/tmp/morphseq4.png", pixd, IFF_PNG);
pixDestroy(&pixd);
/* 8 bpp */
pixg = pixScaleToGray(pixs, 0.25);
pixd = pixGrayMorphSequence(pixg, SEQUENCE3, -5, 150);
pixDestroy(&pixd);
pixd = pixGrayMorphSequence(pixg, SEQUENCE3, DISPLAY_SEPARATION, 150);
pixWrite("/tmp/morphseq5.png", pixd, IFF_PNG);
pixDestroy(&pixd);
pixd = pixGrayMorphSequence(pixg, SEQUENCE4, -6, 300);
pixWrite("/tmp/morphseq6.png", pixd, IFF_PNG);
pixDestroy(&pixd);
/* 32 bpp */
pixc = pixRead("wyom.jpg");
pixd = pixColorMorphSequence(pixc, SEQUENCE5, -7, 150);
pixDestroy(&pixd);
pixd = pixColorMorphSequence(pixc, SEQUENCE5, DISPLAY_SEPARATION, 450);
pixWrite("/tmp/morphseq7.png", pixd, IFF_PNG);
pixDestroy(&pixc);
pixDestroy(&pixd);
/* Syntax error handling */
fprintf(stderr, " ------------ Error messages follow ------------------\n");
pixd = pixMorphSequence(pixs, BAD_SEQUENCE, 50); /* fails; returns null */
pixd = pixGrayMorphSequence(pixg, BAD_SEQUENCE, 50, 0); /* this fails */
pixDestroy(&pixg);
pixDestroy(&pixs);
return 0;
}