Ejemplo n.º 1
0
main(int    argc,
     char **argv)
{
char        *filein, *fileout;
l_float32    deg2rad;
l_float32    angle, conf;
PIX         *pixs, *pixd;
static char  mainName[] = "skewtest";

    if (argc != 3)
	exit(ERROR_INT(" Syntax:  skewtest filein fileout", mainName, 1));

    filein = argv[1];
    fileout = argv[2];

    deg2rad = 3.1415926535 / 180.;

    if ((pixs = pixRead(filein)) == NULL)
	exit(ERROR_INT("pixs not made", mainName, 1));

#if 1
    pixd = pixDeskew(pixs, DESKEW_REDUCTION);
    pixWrite(fileout, pixd, IFF_PNG);
    pixDestroy(&pixd);
#endif

#if 0
    if (pixFindSkew(pixs, &angle, &conf)) {
	L_WARNING("skew angle not valid", mainName);
	exit(1);
    }
#endif

#if 0
    if (pixFindSkewSweep(pixs, &angle, SWEEP_REDUCTION,
                         SWEEP_RANGE, SWEEP_DELTA)) {
	L_WARNING("skew angle not valid", mainName);
	exit(1);
    }
#endif

#if 0
    if (pixFindSkewSweepAndSearch(pixs, &angle, &conf, SWEEP_REDUCTION2,
                         SEARCH_REDUCTION, SWEEP_RANGE2, SWEEP_DELTA2,
			 SEARCH_MIN_DELTA)) {
	L_WARNING("skew angle not valid", mainName);
	exit(1);
    }
#endif

    pixDestroy(&pixs);
    exit(0);
}
Ejemplo n.º 2
0
int main(int    argc,
         char **argv)
{
char        *filein, *fileout;
l_int32      ret;
l_float32    deg2rad;
l_float32    angle, conf, score;
PIX         *pix, *pixs, *pixd;
static char  mainName[] = "skewtest";

    if (argc != 3)
        return ERROR_INT(" Syntax:  skewtest filein fileout", mainName, 1);
    filein = argv[1];
    fileout = argv[2];

    setLeptDebugOK(1);
    pixd = NULL;
    deg2rad = 3.1415926535 / 180.;

    if ((pixs = pixRead(filein)) == NULL)
        return ERROR_INT("pixs not made", mainName, 1);

        /* Find the skew angle various ways */
    pix = pixConvertTo1(pixs, 130);
    pixWrite("/tmp/binarized.tif", pix, IFF_TIFF_G4);
    pixFindSkew(pix, &angle, &conf);
    fprintf(stderr, "pixFindSkew():\n"
                    "  conf = %5.3f, angle = %7.3f degrees\n", conf, angle);

    pixFindSkewSweepAndSearchScorePivot(pix, &angle, &conf, &score,
                                        SWEEP_REDUCTION2, SEARCH_REDUCTION,
                                        0.0, SWEEP_RANGE2, SWEEP_DELTA2,
                                        SEARCH_MIN_DELTA,
                                        L_SHEAR_ABOUT_CORNER);
    fprintf(stderr, "pixFind...Pivot(about corner):\n"
                    "  conf = %5.3f, angle = %7.3f degrees, score = %f\n",
            conf, angle, score);

    pixFindSkewSweepAndSearchScorePivot(pix, &angle, &conf, &score,
                                        SWEEP_REDUCTION2, SEARCH_REDUCTION,
                                        0.0, SWEEP_RANGE2, SWEEP_DELTA2,
                                        SEARCH_MIN_DELTA,
                                        L_SHEAR_ABOUT_CENTER);
    fprintf(stderr, "pixFind...Pivot(about center):\n"
                    "  conf = %5.3f, angle = %7.3f degrees, score = %f\n",
            conf, angle, score);

        /* Use top-level */
    pixd = pixDeskew(pixs, 0);
    pixWriteImpliedFormat(fileout, pixd, 0, 0);


#if 0
        /* Do it piecemeal; fails if outside the range */
    if (pixGetDepth(pixs) == 1) {
        pixd = pixDeskew(pix, DESKEW_REDUCTION);
        pixWrite(fileout, pixd, IFF_PNG);
    }
    else {
        ret = pixFindSkewSweepAndSearch(pix, &angle, &conf, SWEEP_REDUCTION2,
                                        SEARCH_REDUCTION, SWEEP_RANGE2,
                                        SWEEP_DELTA2, SEARCH_MIN_DELTA);
        if (ret)
            L_WARNING("skew angle not valid\n", mainName);
        else {
            fprintf(stderr, "conf = %5.3f, angle = %7.3f degrees\n",
                    conf, angle);
            if (conf > 2.5)
                pixd = pixRotate(pixs, angle * deg2rad, L_ROTATE_AREA_MAP,
                                 L_BRING_IN_WHITE, 0, 0);
            else
                pixd = pixClone(pixs);
            pixWrite(fileout, pixd, IFF_PNG);
            pixDestroy(&pixd);
        }
    }
#endif

    pixDestroy(&pixs);
    pixDestroy(&pix);
    pixDestroy(&pixd);
    return 0;
}
Ejemplo n.º 3
0
int main(int argc,
         char **argv) {
    char *filein;
    l_float32 angle, conf, deg2rad;
    PIX *pixs, *pix1, *pix2, *pix3, *pix4, *pix5;
    PIX *pix6, *pix7, *pix8, *pix9;
    static char mainName[] = "lineremoval";

    if (argc != 2)
        return ERROR_INT(" Syntax:  lineremoval filein", mainName, 1);

    filein = argv[1];

    deg2rad = 3.14159 / 180.;
    if ((pixs = pixRead(filein)) == NULL)
        return ERROR_INT("pix not made", mainName, 1);

    /* threshold to binary, extracting much of the lines */
    pix1 = pixThresholdToBinary(pixs, 170);
    pixWrite("/tmp/dave-proc1.png", pix1, IFF_PNG);
    pixDisplayWrite(pix1, 1);

    /* find the skew angle and deskew using an interpolated
     * rotator for anti-aliasing (to avoid jaggies) */
    pixFindSkew(pix1, &angle, &conf);
    pix2 = pixRotateAMGray(pixs, deg2rad * angle, 255);
    pixWrite("/tmp/dave-proc2.png", pix2, IFF_PNG);
    pixDisplayWrite(pix2, 1);

    /* extract the lines to be removed */
    pix3 = pixCloseGray(pix2, 51, 1);
    pixWrite("/tmp/dave-proc3.png", pix3, IFF_PNG);
    pixDisplayWrite(pix3, 1);

    /* solidify the lines to be removed */
    pix4 = pixErodeGray(pix3, 1, 5);
    pixWrite("/tmp/dave-proc4.png", pix4, IFF_PNG);
    pixDisplayWrite(pix4, 1);

    /* clean the background of those lines */
    pix5 = pixThresholdToValue(NULL, pix4, 210, 255);
    pixWrite("/tmp/dave-proc5.png", pix5, IFF_PNG);
    pixDisplayWrite(pix5, 1);

    pix6 = pixThresholdToValue(NULL, pix5, 200, 0);
    pixWrite("/tmp/dave-proc6.png", pix6, IFF_PNG);
    pixDisplayWrite(pix6, 1);

    /* get paint-through mask for changed pixels */
    pix7 = pixThresholdToBinary(pix6, 210);
    pixWrite("/tmp/dave-proc7.png", pix7, IFF_PNG);
    pixDisplayWrite(pix7, 1);

    /* add the inverted, cleaned lines to orig.  Because
     * the background was cleaned, the inversion is 0,
     * so when you add, it doesn't lighten those pixels.
     * It only lightens (to white) the pixels in the lines! */
    pixInvert(pix6, pix6);
    pix8 = pixAddGray(NULL, pix2, pix6);
    pixWrite("/tmp/dave-proc8.png", pix8, IFF_PNG);
    pixDisplayWrite(pix8, 1);

    pix9 = pixOpenGray(pix8, 1, 9);
    pixWrite("/tmp/dave-proc9.png", pix9, IFF_PNG);
    pixDisplayWrite(pix9, 1);

    pixCombineMasked(pix8, pix9, pix7);
    pixWrite("/tmp/dave-result.png", pix8, IFF_PNG);
    pixDisplayWrite(pix8, 1);

    pixDisplayMultiple("/tmp/display/file*");
    return 0;
}
Ejemplo n.º 4
0
int main_line_removal() {
	PIX* pixs_source = pixRead("dave-start.png");
	if (!pixs_source) {
		printf("Error opening file");
		return 1;
	}


	double deg2rad = 3.1415926535 / 180.;
	l_float32    angle, conf, score;

	PIX *pix1, *pix2, *pix3, *pix4, *pix5, *pix6, *pix7, *pix8, *pix9;

	pix1 = pixThresholdToBinary(pixs_source, 160);
	printf("Create line removal image\n");
	pixWrite("line-removal/result.line-removal-1.tif", pix1, IFF_TIFF_G4);

	pixFindSkew(pix1, &angle, &conf);
	pix2 = pixRotateAMGray(pixs_source, deg2rad * angle, 160);
	printf("Create line removal image\n");
	pixWrite("line-removal/result.line-removal-2.tif", pix2, IFF_TIFF_G4);

	l_int32 HORIZ = 1;
	l_int32 VERT = 3;
	pix3 = pixCloseGray(pix2, 51, HORIZ); //k?p?c 51?
	printf("Create line removal image\n");
	pixWrite("line-removal/result.line-removal-3.tif", pix3, IFF_TIFF_G4);

	pix4 = pixErodeGray(pix3, 5, VERT); //k?p?c 5?
	printf("Create line removal image\n");
	pixWrite("line-removal/result.line-removal-4.tif", pix4, IFF_TIFF_G4);


	pix5 = pix4;
	pix5 = pixThresholdToValue(pix5, pix4, 230, 255);
	printf("Create line removal image\n");
	pixWrite("line-removal/result.line-removal-5.tif", pix5, IFF_TIFF_G4);

	pix6 = pix5;
	pix6 = pixThresholdToValue(pix5, pix5, 210, 0);
	printf("Create line removal image\n");
	pixWrite("line-removal/result.line-removal-6.tif", pix6, IFF_TIFF_G4);

	pix7 = pixThresholdToBinary(pix6, 230);
	printf("Create line removal image\n");
	pixWrite("line-removal/result.line-removal-7.tif", pix7, IFF_TIFF_G4);
	
	pixInvert(pix6, pix6);
	pix8 = pixAddGray(NULL, pix2, pix6);
	printf("Create line removal image\n");
	pixWrite("line-removal/result.line-removal-8.tif", pix8, IFF_TIFF_G4);

	VERT = 7;
	pix9 = pixOpenGray(pix8, 3, VERT);
	printf("Create line removal image\n");
	pixWrite("line-removal/result.line-removal-9.tif", pix9, IFF_TIFF_G4);

	if (pixCombineMasked(pix8, pix9, pix7)) {
		printf("!!!Error while combining pixs!!!\n");
	}
	printf("Create line removal image\n");
	pixWrite("line-removal/result.line-removal-final.tif", pix8, IFF_TIFF_G4);


	printf("\n---\nEnd\n");
	getchar();
	return 0;
}