main(int argc,
char **argv)
{
char bufname[256];
l_int32 i, j, w, h, d, x, y, wpls;
l_uint32 *datas, *lines;
l_float32 *vc;
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, *pixt1, *pixt2, *pixt3;
PIXA *pixa;
PTA *ptas, *ptad;
static char mainName[] = "affine_reg";
if (argc != 1)
exit(ERROR_INT(" Syntax: affine_reg", mainName, 1));
if ((pixs = pixRead("feyn.tif")) == NULL)
exit(ERROR_INT("pixs not made", mainName, 1));
#if ALL
/* Test invertability of sequential. */
pixa = pixaCreate(0);
for (i = 0; i < 3; i++) {
pixb = pixAddBorder(pixs, ADDED_BORDER_PIXELS, 0);
MakePtas(i, &ptas, &ptad);
pixt1 = pixAffineSequential(pixb, ptad, ptas, 0, 0);
pixSaveTiled(pixt1, pixa, 3, 1, 20, 8);
pixt2 = pixAffineSequential(pixt1, ptas, ptad, 0, 0);
pixSaveTiled(pixt2, pixa, 3, 0, 20, 0);
pixd = pixRemoveBorder(pixt2, ADDED_BORDER_PIXELS);
pixXor(pixd, pixd, pixs);
pixSaveTiled(pixd, pixa, 3, 0, 20, 0);
sprintf(bufname, "/tmp/junkseq%d.png", i);
pixWrite(bufname, pixd, IFF_PNG);
pixDestroy(&pixb);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
pixDestroy(&pixd);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
}
pixt1 = pixaDisplay(pixa, 0, 0);
pixWrite("/tmp/junkaffine1.png", pixt1, IFF_PNG);
pixDisplay(pixt1, 100, 100);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
#endif
#if ALL
/* Test invertability of sampling */
pixa = pixaCreate(0);
for (i = 0; i < 3; i++) {
pixb = pixAddBorder(pixs, ADDED_BORDER_PIXELS, 0);
MakePtas(i, &ptas, &ptad);
pixt1 = pixAffineSampledPta(pixb, ptad, ptas, L_BRING_IN_WHITE);
pixSaveTiled(pixt1, pixa, 3, 1, 20, 8);
pixt2 = pixAffineSampledPta(pixt1, ptas, ptad, L_BRING_IN_WHITE);
pixSaveTiled(pixt2, pixa, 3, 0, 20, 0);
pixd = pixRemoveBorder(pixt2, ADDED_BORDER_PIXELS);
pixXor(pixd, pixd, pixs);
pixSaveTiled(pixd, pixa, 3, 0, 20, 0);
if (i == 0) pixWrite("/tmp/junksamp.png", pixt1, IFF_PNG);
pixDestroy(&pixb);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
pixDestroy(&pixd);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
}
pixt1 = pixaDisplay(pixa, 0, 0);
pixWrite("/tmp/junkaffine2.png", pixt1, IFF_PNG);
pixDisplay(pixt1, 100, 300);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
#endif
#if ALL
/* Test invertability of interpolation on grayscale */
pixa = pixaCreate(0);
pixg = pixScaleToGray3(pixs);
for (i = 0; i < 3; i++) {
pixb = pixAddBorder(pixg, ADDED_BORDER_PIXELS / 3, 255);
MakePtas(i, &ptas, &ptad);
pixt1 = pixAffinePta(pixb, ptad, ptas, L_BRING_IN_WHITE);
pixSaveTiled(pixt1, pixa, 1, 1, 20, 8);
pixt2 = pixAffinePta(pixt1, ptas, ptad, L_BRING_IN_WHITE);
pixSaveTiled(pixt2, pixa, 1, 0, 20, 0);
pixd = pixRemoveBorder(pixt2, ADDED_BORDER_PIXELS / 3);
pixXor(pixd, pixd, pixg);
pixSaveTiled(pixd, pixa, 1, 0, 20, 0);
if (i == 0) pixWrite("/tmp/junkinterp.png", pixt1, IFF_PNG);
pixDestroy(&pixb);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
pixDestroy(&pixd);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
}
pixt1 = pixaDisplay(pixa, 0, 0);
pixWrite("/tmp/junkaffine3.png", pixt1, IFF_PNG);
pixDisplay(pixt1, 100, 500);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
pixDestroy(&pixg);
#endif
#if ALL
/* Test invertability of interpolation on color */
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);
pixt1 = pixAffinePta(pixb, ptad, ptas, L_BRING_IN_WHITE);
pixSaveTiled(pixt1, pixa, 1, 1, 20, 32);
pixt2 = pixAffinePta(pixt1, ptas, ptad, L_BRING_IN_WHITE);
pixSaveTiled(pixt2, pixa, 1, 0, 20, 0);
pixd = pixRemoveBorder(pixt2, ADDED_BORDER_PIXELS / 4);
pixXor(pixd, pixd, pixcs);
pixSaveTiled(pixd, pixa, 1, 0, 20, 0);
pixDestroy(&pixb);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
pixDestroy(&pixd);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
}
pixt1 = pixaDisplay(pixa, 0, 0);
pixWrite("/tmp/junkaffine4.png", pixt1, IFF_PNG);
pixDisplay(pixt1, 100, 500);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
pixDestroy(&pixc);
pixDestroy(&pixcs);
#endif
#if ALL
/* Comparison between sequential and sampling */
MakePtas(3, &ptas, &ptad);
pixa = pixaCreate(0);
/* Use sequential transforms */
pixt1 = pixAffineSequential(pixs, ptas, ptad,
ADDED_BORDER_PIXELS, ADDED_BORDER_PIXELS);
pixSaveTiled(pixt1, pixa, 2, 0, 20, 8);
/* Use sampled transform */
pixt2 = pixAffineSampledPta(pixs, ptas, ptad, L_BRING_IN_WHITE);
pixSaveTiled(pixt2, pixa, 2, 0, 20, 8);
/* Compare the results */
pixXor(pixt2, pixt2, pixt1);
pixSaveTiled(pixt2, pixa, 2, 0, 20, 8);
pixd = pixaDisplay(pixa, 0, 0);
pixWrite("/tmp/junkaffine5.png", pixd, IFF_PNG);
pixDisplay(pixd, 100, 700);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
pixDestroy(&pixd);
pixaDestroy(&pixa);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
#endif
#if ALL
/* Get timings and test with large distortion */
MakePtas(4, &ptas, &ptad);
pixa = pixaCreate(0);
pixg = pixScaleToGray3(pixs);
startTimer();
pixt1 = pixAffineSequential(pixg, ptas, ptad, 0, 0);
fprintf(stderr, " Time for pixAffineSequentialPta(): %6.2f sec\n",
stopTimer());
pixSaveTiled(pixt1, pixa, 1, 1, 20, 8);
startTimer();
pixt2 = pixAffineSampledPta(pixg, ptas, ptad, L_BRING_IN_WHITE);
fprintf(stderr, " Time for pixAffineSampledPta(): %6.2f sec\n", stopTimer());
pixSaveTiled(pixt2, pixa, 1, 0, 20, 8);
startTimer();
pixt3 = pixAffinePta(pixg, ptas, ptad, L_BRING_IN_WHITE);
fprintf(stderr, " Time for pixAffinePta(): %6.2f sec\n", stopTimer());
pixSaveTiled(pixt3, pixa, 1, 0, 20, 8);
pixXor(pixt1, pixt1, pixt2);
pixSaveTiled(pixt1, pixa, 1, 1, 20, 8);
pixXor(pixt2, pixt2, pixt3);
pixSaveTiled(pixt2, pixa, 1, 0, 20, 8);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
pixDestroy(&pixt3);
pixd = pixaDisplay(pixa, 0, 0);
pixWrite("/tmp/junkaffine6.png", pixd, IFF_PNG);
pixDisplay(pixd, 100, 900);
pixDestroy(&pixd);
pixDestroy(&pixg);
pixaDestroy(&pixa);
ptaDestroy(&ptas);
ptaDestroy(&ptad);
#endif
pixDestroy(&pixs);
#if 1
/* Set up pix and boxa */
pixa = pixaCreate(0);
pix = pixRead("lucasta.1.300.tif");
pixTranslate(pix, pix, 70, 0, L_BRING_IN_WHITE);
pixt1 = pixCloseBrick(NULL, pix, 14, 5);
pixOpenBrick(pixt1, pixt1, 1, 2);
boxa = pixConnComp(pixt1, NULL, 8);
pixs = pixConvertTo32(pix);
pixGetDimensions(pixs, &w, &h, NULL);
pixc = pixCopy(NULL, pixs);
RenderHashedBoxa(pixc, boxa, 113);
pixSaveTiled(pixc, pixa, 2, 1, 30, 32);
pixDestroy(&pix);
pixDestroy(&pixc);
pixDestroy(&pixt1);
/* 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 in 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 in matdinv */
affineInvertXform(matd, &matdinv);
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, "\nInverse transform, made 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, "\nInverse transform, made by inverting the 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);
pixSaveTiled(pixd, pixa, 2, 0, 30, 32);
pixDestroy(&pixd);
pixd = pixaDisplay(pixa, 0, 0);
pixWrite("/tmp/junkaffine7.png", pixd, IFF_PNG);
pixDisplay(pixd, 100, 900);
pixDestroy(&pixd);
pixDestroy(&pixs);
pixaDestroy(&pixa);
boxaDestroy(&boxa);
boxaDestroy(&boxa2);
FREE(mat1);
FREE(mat2);
FREE(mat3);
FREE(mat1i);
FREE(mat2i);
FREE(mat3i);
#endif
return 0;
}
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);
}