pdfSaveImageAsPBM

Save an image as a PBM file.
int pdfSaveImageAsPBM(PDFHandle pdf, int idx, char *pbmFileName)
This function saves the idxth image on the page specified in the last call to pdfGetImages as a PBM (portable bitmap) file. It returns 1 if successful, 0 if there was an error.

This function only works for monochrome images and image masks; it will fail on grayscale and color images.

Typically, the PBM/PGM/PPM formats are used on Unix systems and the BMP format on Windows systems, but all formats are available in all versions of the XpdfImageExtract library.

C:
char *csName; int nImgs, i, mask, colorSpace, w, h; nImgs = pdfGetNumImages(pdf); for (i = 0; i < nImgs; ++i) { /* Save the image as a PBM, PGM, or PPM file */ pdfGetImageInfo(pdf, i, &mask, &colorSpace, &w, &h); csName = pdfGetColorSpaceName(pdf, colorSpace); if (mask) { pdfSaveImageAsPBM(pdf, i, "image.pbm"); } else if (!strcmp(csName, "DeviceGray") || !strcmp(csName, "CalGray")) { pdfSaveImageAsPGM(pdf, i, "image.pgm"); } else { pdfSaveImageAsPPM(pdf, i, "image.ppm"); } }
pdfGetImages
pdfGetNumImages
pdfSaveImageAsPGM
pdfSaveImageAsPPM
pdfSaveImageAsBMP