/*====================================================================* - Copyright (C) 2001 Leptonica. All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - 1. Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - 2. Redistributions in binary form must reproduce the above - copyright notice, this list of conditions and the following - disclaimer in the documentation and/or other materials - provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY - CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY - OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *====================================================================*/ /* * convertsegfilestopdf.c * * Converts all image files in the page directory with matching substring * to a pdf. Image regions are downscaled by the scalefactor and * encoded as jpeg. Non-image regions with depth > 1 are automatically * scaled up by 2x and thresholded if the encoding type is G4; * otherwise, no scaling is performed on them. To convert all * files in the page directory, use 'allfiles' for its substring. * Likewise to use all files in the mask directory, use 'allfiles' * for its substring. * * A typical invocation would be something like: * convertsegfilestopdf /tmp/segpages allfiles /tmp/segmasks allfiles \ * 300 2 160 skip 0.5 [title] [output pdf] * This upscales by 2x all non-image regions to 600 ppi, and downscales * by 0.5 all image regions to 150 ppi. * * If used on a set of images without segmentation data, a typical * invocation would be: * convertsegfilestopdf /tmp/pages allfiles skip skip \ * 300 2 160 skip 1.0 [title] [output pdf] * If the page images have depth > 1 bpp, this will upscale all pages * by 2x (to 600 ppi), and then convert the images to 1 bpp. * Note that 'skip' is used three times to omit all segmentation data. * * See below for further syntax and usage. * * Again, note that the image regions are displayed at a resolution * that depends on the input resolution (res) and the scaling factor * (scalefact) that is applied to the images before conversion to pdf. * Internally we multiply these, so that the generated pdf will render * at the same resolution as if it hadn't been scaled. When we * downscale the image regions, this: * (1) reduces the size of the images. For jpeg, downscaling * reduces by square of the scale factor the 'image' segmented part. * (2) regenerates the jpeg with quality = 75 after downscaling. * * If you already have a boxaafile of the image regions, use 'skip' for * maskdir. Otherwise, this will generate the boxaa from the mask images. * * A regression test that uses this is pdfseg_reg, which * generates images and the boxaa file in /tmp/segtest/. */ #ifdef HAVE_CONFIG_H #include #endif /* HAVE_CONFIG_H */ #include #include "allheaders.h" int main(int argc, char **argv) { char *pagedir, *pagesubstr, *maskdir, *masksubstr; char *title, *fileout, *boxaafile, *boxaapath; l_int32 ret, res, type, thresh; l_float32 scalefactor; BOXAA *baa; static char mainName[] = "convertsegfilestopdf"; if (argc != 12) { lept_stderr( " Syntax: convertsegfilestopdf dirin substr res type thresh \\ \n" " boxaafile scalefactor title fileout\n" " where\n" " pagedir: input directory for image files\n" " pagesubstr: Use 'allfiles' to convert all files\n" " in the directory\n" " maskdir: input directory for mask files;\n" " use 'skip' to skip \n" " masksubstr: Use 'allfiles' to convert all files\n" " in the directory; 'skip' to skip\n" " res: Input resolution of each image;\n" " assumed to all be the same\n" " type: compression used for non-image regions:\n" " 0: default (G4 encoding)\n" " 1: JPEG encoding\n" " 2: G4 encoding\n" " 3: PNG encoding\n" " thresh: threshold for binarization; use 0 for default\n" " boxaafile: Optional file of 'image' regions within\n" " each page. This contains a boxa for each\n" " page, consisting of a set of regions.\n" " Use 'skip' to skip.\n" " scalefactor: Use to scale down the image regions\n" " title: Use 'none' to omit\n" " fileout: Output pdf file\n"); return 1; } pagedir = argv[1]; pagesubstr = argv[2]; maskdir = argv[3]; masksubstr = argv[4]; res = atoi(argv[5]); type = atoi(argv[6]); thresh = atoi(argv[7]); boxaafile = argv[8]; scalefactor = atof(argv[9]); title = argv[10]; fileout = argv[11]; if (!strcmp(pagesubstr, "allfiles")) pagesubstr = NULL; if (!strcmp(maskdir, "skip")) maskdir = NULL; if (!strcmp(masksubstr, "allfiles")) masksubstr = NULL; if (scalefactor <= 0.0 || scalefactor > 1.0) { L_WARNING("invalid scalefactor: setting to 1.0\n", mainName); scalefactor = 1.0; } if (type != 1 && type != 2 && type != 3) type = L_G4_ENCODE; if (thresh <= 0) thresh = 150; if (!strcmp(title, "none")) title = NULL; setLeptDebugOK(1); if (maskdir) /* use this; ignore any input boxaafile */ baa = convertNumberedMasksToBoxaa(maskdir, masksubstr, 0, 0); else if (strcmp(boxaafile, "skip") != 0) { /* use the boxaafile */ boxaapath = genPathname(boxaafile, NULL); baa = boxaaRead(boxaapath); lept_free(boxaapath); } else /* no maskdir and no input boxaafile */ baa = NULL; ret = convertSegmentedFilesToPdf(pagedir, pagesubstr, res, type, thresh, baa, 75, scalefactor, title, fileout); boxaaDestroy(&baa); return ret; }