/*!
* pixMorphCompSequenceDwa()
*
* Input: pixs
* sequence (string specifying sequence)
* dispsep (horizontal separation in pixels between
* successive displays; use zero to suppress display)
* Return: pixd, or null on error
*
* Notes:
* (1) This does dwa morphology on binary images, using brick Sels.
* (2) This runs a pipeline of operations; no branching is allowed.
* (3) It implements all brick Sels that have dimensions up to 63
* on each side, using a composite (linear + comb) when useful.
* (4) A new image is always produced; the input image is not changed.
* (5) This contains an interpreter, allowing sequences to be
* generated and run.
* (6) See pixMorphSequence() for further information about usage.
*/
PIX *
pixMorphCompSequenceDwa(PIX *pixs,
const char *sequence,
l_int32 dispsep)
{
char *rawop, *op;
l_int32 nops, i, j, nred, fact, w, h, x, y, border;
l_int32 level[4];
PIX *pixt1, *pixt2;
SARRAY *sa;
PROCNAME("pixMorphCompSequenceDwa");
if (!pixs)
return (PIX *)ERROR_PTR("pixs not defined", procName, NULL);
if (!sequence)
return (PIX *)ERROR_PTR("sequence not defined", procName, NULL);
/* Split sequence into individual operations */
sa = sarrayCreate(0);
sarraySplitString(sa, sequence, "+");
nops = sarrayGetCount(sa);
if (!morphSequenceVerify(sa)) {
sarrayDestroy(&sa);
return (PIX *)ERROR_PTR("sequence not valid", procName, NULL);
}
/* Parse and operate */
border = 0;
pixt1 = pixCopy(NULL, pixs);
pixt2 = NULL;
x = y = 0;
for (i = 0; i < nops; i++) {
rawop = sarrayGetString(sa, i, 0);
op = stringRemoveChars(rawop, " \n\t");
switch (op[0])
{
case 'd':
case 'D':
sscanf(&op[1], "%d.%d", &w, &h);
pixt2 = pixDilateCompBrickDwa(NULL, pixt1, w, h);
pixDestroy(&pixt1);
pixt1 = pixClone(pixt2);
pixDestroy(&pixt2);
if (dispsep > 0) {
pixDisplay(pixt1, x, y);
x += dispsep;
}
break;
case 'e':
case 'E':
sscanf(&op[1], "%d.%d", &w, &h);
pixt2 = pixErodeCompBrickDwa(NULL, pixt1, w, h);
pixDestroy(&pixt1);
pixt1 = pixClone(pixt2);
pixDestroy(&pixt2);
if (dispsep > 0) {
pixDisplay(pixt1, x, y);
x += dispsep;
}
break;
case 'o':
case 'O':
sscanf(&op[1], "%d.%d", &w, &h);
pixOpenCompBrickDwa(pixt1, pixt1, w, h);
if (dispsep > 0) {
pixDisplay(pixt1, x, y);
x += dispsep;
}
break;
case 'c':
case 'C':
sscanf(&op[1], "%d.%d", &w, &h);
pixCloseCompBrickDwa(pixt1, pixt1, w, h);
if (dispsep > 0) {
pixDisplay(pixt1, x, y);
x += dispsep;
}
break;
case 'r':
case 'R':
nred = strlen(op) - 1;
for (j = 0; j < nred; j++)
level[j] = op[j + 1] - '0';
for (j = nred; j < 4; j++)
level[j] = 0;
pixt2 = pixReduceRankBinaryCascade(pixt1, level[0], level[1],
level[2], level[3]);
pixDestroy(&pixt1);
pixt1 = pixClone(pixt2);
pixDestroy(&pixt2);
if (dispsep > 0) {
pixDisplay(pixt1, x, y);
x += dispsep;
}
break;
case 'x':
case 'X':
sscanf(&op[1], "%d", &fact);
pixt2 = pixExpandReplicate(pixt1, fact);
pixDestroy(&pixt1);
pixt1 = pixClone(pixt2);
pixDestroy(&pixt2);
if (dispsep > 0) {
pixDisplay(pixt1, x, y);
x += dispsep;
}
break;
case 'b':
case 'B':
sscanf(&op[1], "%d", &border);
pixt2 = pixAddBorder(pixt1, border, 0);
pixDestroy(&pixt1);
pixt1 = pixClone(pixt2);
pixDestroy(&pixt2);
if (dispsep > 0) {
pixDisplay(pixt1, x, y);
x += dispsep;
}
break;
default:
/* All invalid ops are caught in the first pass */
break;
}
FREE(op);
}
if (border > 0) {
pixt2 = pixRemoveBorder(pixt1, border);
pixDestroy(&pixt1);
pixt1 = pixClone(pixt2);
pixDestroy(&pixt2);
}
sarrayDestroy(&sa);
return pixt1;
}
/*!
* \brief pixMorphCompSequenceDwa()
*
* \param[in] pixs
* \param[in] sequence string specifying sequence
* \param[in] dispsep controls debug display of each result in the sequence:
* 0: no output
* > 0: gives horizontal separation in pixels between
* successive displays
* < 0: pdf output; abs(dispsep) is used for naming
* \return pixd, or NULL on error
*
* <pre>
* Notes:
* (1) This does dwa morphology on binary images, using brick Sels.
* (2) This runs a pipeline of operations; no branching is allowed.
* (3) It implements all brick Sels that have dimensions up to 63
* on each side, using a composite (linear + comb) when useful.
* (4) A new image is always produced; the input image is not changed.
* (5) This contains an interpreter, allowing sequences to be
* generated and run.
* (6) See pixMorphSequence() for further information about usage.
* </pre>
*/
PIX *
pixMorphCompSequenceDwa(PIX *pixs,
const char *sequence,
l_int32 dispsep)
{
char *rawop, *op, *fname;
char buf[256];
l_int32 nops, i, j, nred, fact, w, h, x, y, border, pdfout;
l_int32 level[4];
PIX *pixt1, *pixt2;
PIXA *pixa;
SARRAY *sa;
PROCNAME("pixMorphCompSequenceDwa");
if (!pixs)
return (PIX *)ERROR_PTR("pixs not defined", procName, NULL);
if (!sequence)
return (PIX *)ERROR_PTR("sequence not defined", procName, NULL);
/* Split sequence into individual operations */
sa = sarrayCreate(0);
sarraySplitString(sa, sequence, "+");
nops = sarrayGetCount(sa);
pdfout = (dispsep < 0) ? 1 : 0;
if (!morphSequenceVerify(sa)) {
sarrayDestroy(&sa);
return (PIX *)ERROR_PTR("sequence not valid", procName, NULL);
}
/* Parse and operate */
pixa = NULL;
if (pdfout) {
pixa = pixaCreate(0);
pixaAddPix(pixa, pixs, L_CLONE);
snprintf(buf, sizeof(buf), "/tmp/seq_output_%d.pdf", L_ABS(dispsep));
fname = genPathname(buf, NULL);
}
border = 0;
pixt1 = pixCopy(NULL, pixs);
pixt2 = NULL;
x = y = 0;
for (i = 0; i < nops; i++) {
rawop = sarrayGetString(sa, i, L_NOCOPY);
op = stringRemoveChars(rawop, " \n\t");
switch (op[0])
{
case 'd':
case 'D':
sscanf(&op[1], "%d.%d", &w, &h);
pixt2 = pixDilateCompBrickDwa(NULL, pixt1, w, h);
pixSwapAndDestroy(&pixt1, &pixt2);
break;
case 'e':
case 'E':
sscanf(&op[1], "%d.%d", &w, &h);
pixt2 = pixErodeCompBrickDwa(NULL, pixt1, w, h);
pixSwapAndDestroy(&pixt1, &pixt2);
break;
case 'o':
case 'O':
sscanf(&op[1], "%d.%d", &w, &h);
pixOpenCompBrickDwa(pixt1, pixt1, w, h);
break;
case 'c':
case 'C':
sscanf(&op[1], "%d.%d", &w, &h);
pixCloseCompBrickDwa(pixt1, pixt1, w, h);
break;
case 'r':
case 'R':
nred = strlen(op) - 1;
for (j = 0; j < nred; j++)
level[j] = op[j + 1] - '0';
for (j = nred; j < 4; j++)
level[j] = 0;
pixt2 = pixReduceRankBinaryCascade(pixt1, level[0], level[1],
level[2], level[3]);
pixSwapAndDestroy(&pixt1, &pixt2);
break;
case 'x':
case 'X':
sscanf(&op[1], "%d", &fact);
pixt2 = pixExpandReplicate(pixt1, fact);
pixSwapAndDestroy(&pixt1, &pixt2);
break;
case 'b':
case 'B':
sscanf(&op[1], "%d", &border);
pixt2 = pixAddBorder(pixt1, border, 0);
pixSwapAndDestroy(&pixt1, &pixt2);
break;
default:
/* All invalid ops are caught in the first pass */
break;
}
LEPT_FREE(op);
/* Debug output */
if (dispsep > 0) {
pixDisplay(pixt1, x, y);
x += dispsep;
}
if (pdfout)
pixaAddPix(pixa, pixt1, L_COPY);
}
if (border > 0) {
pixt2 = pixRemoveBorder(pixt1, border);
pixSwapAndDestroy(&pixt1, &pixt2);
}
if (pdfout) {
pixaConvertToPdf(pixa, 0, 1.0, L_FLATE_ENCODE, 0, fname, fname);
LEPT_FREE(fname);
pixaDestroy(&pixa);
}
sarrayDestroy(&sa);
return pixt1;
}