예제 #1
0
/*!
 *  pixCloseGray3()
 *
 *      Input:  pixs (8 bpp, not cmapped)
 *              hsize  (1 or 3)
 *              vsize  (1 or 3)
 *      Return: pixd, or null on error
 *
 *  Notes:
 *      (1) Special case for 1x3, 3x1 or 3x3 brick sel (all hits)
 *      (2) If hsize = vsize = 1, just returns a copy.
 */
PIX *
pixCloseGray3(PIX     *pixs,
              l_int32  hsize,
              l_int32  vsize)
{
PIX  *pixt, *pixb, *pixbd, *pixd;

    PROCNAME("pixCloseGray3");

    if (!pixs)
        return (PIX *)ERROR_PTR("pixs not defined", procName, NULL);
    if (pixGetDepth(pixs) != 8)
        return (PIX *)ERROR_PTR("pixs not 8 bpp", procName, NULL);
    if (pixGetColormap(pixs))
        return (PIX *)ERROR_PTR("pix has colormap", procName, NULL);
    if ((hsize != 1 && hsize != 3) ||
        (vsize != 1 && vsize != 3))
        return (PIX *)ERROR_PTR("invalid size: must be 1 or 3", procName, NULL);

    if (hsize == 1 && vsize == 1)
        return pixCopy(NULL, pixs);

    pixb = pixAddBorderGeneral(pixs, 4, 8, 2, 8, 0);  /* set to min */

    if (vsize == 1) {
        pixt = pixDilateGray3h(pixb);
        pixSetBorderVal(pixt, 4, 8, 2, 8, 255);  /* set to max */
        pixbd = pixErodeGray3h(pixt);
        pixDestroy(&pixt);
    }
    else if (hsize == 1) {
        pixt = pixDilateGray3v(pixb);
        pixSetBorderVal(pixt, 4, 8, 2, 8, 255);
        pixbd = pixErodeGray3v(pixt);
        pixDestroy(&pixt);
    }
    else {  /* vize == hsize == 3 */
        pixt = pixDilateGray3h(pixb);
        pixbd = pixDilateGray3v(pixt);
        pixDestroy(&pixt);
        pixSetBorderVal(pixbd, 4, 8, 2, 8, 255);
        pixt = pixErodeGray3h(pixbd);
        pixDestroy(&pixbd);
        pixbd = pixErodeGray3v(pixt);
        pixDestroy(&pixt);
    }

    pixd = pixRemoveBorderGeneral(pixbd, 4, 8, 2, 8);
    pixDestroy(&pixb);
    pixDestroy(&pixbd);
    return pixd;
}
예제 #2
0
/*!
 *  pixDilateGray3h()
 *
 *      Input:  pixs (8 bpp, not cmapped)
 *      Return: pixd, or null on error
 *
 *  Notes:
 *      (1) Special case for horizontal 3x1 brick Sel;
 *          also used as the first step for the 3x3 brick Sel.
 */
static PIX *
pixDilateGray3h(PIX  *pixs)
{
l_uint32  *datas, *datad, *lines, *lined;
l_int32    w, h, wpl, i, j;
l_int32    val0, val1, val2, val3, val4, val5, val6, val7, val8, val9, maxval;
PIX       *pixd;

    PROCNAME("pixDilateGray3h");

    if (!pixs)
        return (PIX *)ERROR_PTR("pixs not defined", procName, NULL);
    if (pixGetDepth(pixs) != 8)
        return (PIX *)ERROR_PTR("pixs not 8 bpp", procName, NULL);

    pixd = pixCreateTemplateNoInit(pixs);
    pixSetBorderVal(pixd, 4, 8, 2, 8, 0);  /* only to silence valgrind */
    pixGetDimensions(pixs, &w, &h, NULL);
    datas = pixGetData(pixs);
    datad = pixGetData(pixd);
    wpl = pixGetWpl(pixs);
    for (i = 0; i < h; i++) {
        lines = datas + i * wpl;
        lined = datad + i * wpl;
        for (j = 1; j < w - 8; j += 8) {
            val0 = GET_DATA_BYTE(lines, j - 1);
            val1 = GET_DATA_BYTE(lines, j);
            val2 = GET_DATA_BYTE(lines, j + 1);
            val3 = GET_DATA_BYTE(lines, j + 2);
            val4 = GET_DATA_BYTE(lines, j + 3);
            val5 = GET_DATA_BYTE(lines, j + 4);
            val6 = GET_DATA_BYTE(lines, j + 5);
            val7 = GET_DATA_BYTE(lines, j + 6);
            val8 = GET_DATA_BYTE(lines, j + 7);
            val9 = GET_DATA_BYTE(lines, j + 8);
            maxval = L_MAX(val1, val2);
            SET_DATA_BYTE(lined, j, L_MAX(val0, maxval));
            SET_DATA_BYTE(lined, j + 1, L_MAX(maxval, val3));
            maxval = L_MAX(val3, val4);
            SET_DATA_BYTE(lined, j + 2, L_MAX(val2, maxval));
            SET_DATA_BYTE(lined, j + 3, L_MAX(maxval, val5));
            maxval = L_MAX(val5, val6);
            SET_DATA_BYTE(lined, j + 4, L_MAX(val4, maxval));
            SET_DATA_BYTE(lined, j + 5, L_MAX(maxval, val7));
            maxval = L_MAX(val7, val8);
            SET_DATA_BYTE(lined, j + 6, L_MAX(val6, maxval));
            SET_DATA_BYTE(lined, j + 7, L_MAX(maxval, val9));
        }
    }
    return pixd;
}
예제 #3
0
/*!
 * \brief   boxaDisplayTiled()
 *
 * \param[in]    boxas
 * \param[in]    pixa          [optional] background for each box
 * \param[in]    first         index of first box
 * \param[in]    last          index of last box; use -1 to go to end
 * \param[in]    maxwidth      of output image
 * \param[in]    linewidth     width of box outlines, before scaling
 * \param[in]    scalefactor   applied to every box; use 1.0 for no scaling
 * \param[in]    background    0 for white, 1 for black; this is the color
 *                             of the spacing between the images
 * \param[in]    spacing       between images, and on outside
 * \param[in]    border        width of black border added to each image;
 *                             use 0 for no border
 * \return  pixd of tiled images of boxes, or NULL on error
 *
 * <pre>
 * Notes:
 *      (1) Displays each box separately in a tiled 32 bpp image.
 *      (2) If pixa is defined, it must have the same count as the boxa,
 *          and it will be a background over with each box is rendered.
 *          If pixa is not defined, the boxes will be rendered over
 *          blank images of identical size.
 *      (3) See pixaDisplayTiledInRows() for other parameters.
 * </pre>
 */
PIX *
boxaDisplayTiled(BOXA        *boxas,
                 PIXA        *pixa,
                 l_int32      first,
                 l_int32      last,
                 l_int32      maxwidth,
                 l_int32      linewidth,
                 l_float32    scalefactor,
                 l_int32      background,
                 l_int32      spacing,
                 l_int32      border)
{
char     buf[32];
l_int32  i, n, npix, w, h, fontsize;
L_BMF   *bmf;
BOX     *box;
BOXA    *boxa;
PIX     *pix1, *pix2, *pixd;
PIXA    *pixat;

    PROCNAME("boxaDisplayTiled");

    if (!boxas)
        return (PIX *)ERROR_PTR("boxas not defined", procName, NULL);

    boxa = boxaSaveValid(boxas, L_COPY);
    n = boxaGetCount(boxa);
    if (pixa) {
        npix = pixaGetCount(pixa);
        if (n != npix) {
            boxaDestroy(&boxa);
            return (PIX *)ERROR_PTR("boxa and pixa counts differ",
                                    procName, NULL);
        }
    }
    first = L_MAX(0, first);
    if (last < 0) last = n - 1;
    if (first >= n) {
        boxaDestroy(&boxa);
        return (PIX *)ERROR_PTR("invalid first", procName, NULL);
    }
    if (last >= n) {
        L_WARNING("last = %d is beyond max index = %d; adjusting\n",
                  procName, last, n - 1);
        last = n - 1;
    }
    if (first > last) {
        boxaDestroy(&boxa);
        return (PIX *)ERROR_PTR("first > last", procName, NULL);
    }

        /* Because the bitmap font will be reduced when tiled, choose the
         * font size inversely with the scale factor. */
    if (scalefactor > 0.8)
        fontsize = 6;
    else if (scalefactor > 0.6)
        fontsize = 10;
    else if (scalefactor > 0.4)
        fontsize = 14;
    else if (scalefactor > 0.3)
        fontsize = 18;
    else fontsize = 20;
    bmf = bmfCreate(NULL, fontsize);

    pixat = pixaCreate(n);
    boxaGetExtent(boxa, &w, &h, NULL);
    for (i = first; i <= last; i++) {
        box = boxaGetBox(boxa, i, L_CLONE);
        if (!pixa) {
            pix1 = pixCreate(w, h, 32);
            pixSetAll(pix1);
        } else {
            pix1 = pixaGetPix(pixa, i, L_COPY);
        }
        pixSetBorderVal(pix1, 0, 0, 0, 2, 0x0000ff00);
        snprintf(buf, sizeof(buf), "%d", i);
        pix2 = pixAddSingleTextblock(pix1, bmf, buf, 0x00ff0000,
                                     L_ADD_BELOW, NULL);
        pixDestroy(&pix1);
        pixRenderBoxArb(pix2, box, linewidth, 255, 0, 0);
        pixaAddPix(pixat, pix2, L_INSERT);
        boxDestroy(&box);
    }
    bmfDestroy(&bmf);
    boxaDestroy(&boxa);

    pixd = pixaDisplayTiledInRows(pixat, 32, maxwidth, scalefactor, background,
                                  spacing, border);
    pixaDestroy(&pixat);
    return pixd;
}