Although weird, this is desirable. This image will be used as a database of 20x20 clutter objects that will be used to train a face classifier I'm working on. This was probably the simplest arrangement of pixels devised for this purpose.
2013/9/9 Larry Gritz <[email protected]> > Does that look correct? It's not just big overall, but very long and thin? > > OK, I'll take a quick skim over that code and see if I can spot where the > overflow is happening. > > > > On Sep 9, 2013, at 11:33 AM, Ramiro Pereira de Magalhães wrote: > > /home/ramiro/Imagens/0.pgm : 536468780 x 20, 1 channel, uint8 pnm > channel list: I > pnm:binary: 1 > oiio:BitsPerSample: 8 > > > > 2013/9/9 Larry Gritz <[email protected]> > >> If you do this: >> >> iinfo -v myfile.pgm # or whatever the name of your file actually is >> >> what does it say? >> >> >> On Sep 9, 2013, at 8:16 AM, Ramiro Pereira de Magalhães wrote: >> >> > Hi, >> > >> > I have just learned about OIIO and I wrote a simple program with >> OpenImageIO to load a 10GB PGM file into memory. To try things out I wrote >> a simple program to load a 10GB PGM (yeah, PGM) file into memory. Sadly, >> the program crashes prior to completing its task with a Segmentation Fault. >> The machine where this is running has 64GB RAM, most of it free. Can anyone >> help me figure out this issue? >> > >> > Bellow is the program I wrote. It is pretty simple: load the image >> given as argument to it into a buffer, then close the file, clean the >> buffers and leave. >> > >> > ================CODE================ >> > #include <iostream> >> > #include <string> >> > #include <sstream> >> > #include <OpenImageIO/imageio.h> >> > >> > OIIO_NAMESPACE_USING >> > >> > int main(int argc, char* args[]) >> > { >> > if (argc != 2) >> > { >> > return 1; >> > } >> > const std::string filePath = args[1]; >> > >> > ImageInput *in = ImageInput::open (filePath); >> > const ImageSpec & spec = in->spec(); >> > const int size = spec.width * spec.height; >> > >> > unsigned char * pixels = new unsigned char[size]; >> > in->read_image(TypeDesc::UCHAR, pixels); >> > std::cout << "Done reading." << std::endl; >> > in->close(); >> > std::cout << "Closed file." << std::endl; >> > >> > delete in; >> > delete pixels; >> > >> > std::cout << "Outta here." << std::endl; >> > return 0; >> > } >> > ================CODE================ >> > >> > >> > Segfault happens at line 173 of onminput.cpp. Here is the call stack >> given by Qt Builder: >> > >> > 0 OpenImageIO::v1_3::raw_to_raw<unsigned char> pnminput.cpp >> 173 0x7ffff798c1e6 >> > 1 OpenImageIO::v1_3::PNMInput::read_file_scanline pnminput.cpp >> 272 0x7ffff798b09c >> > 2 OpenImageIO::v1_3::PNMInput::read_native_scanline pnminput.cpp >> 385 0x7ffff798b91e >> > 3 OpenImageIO::v1_3::ImageInput::read_native_scanlines >> imageinput.cpp 260 0x7ffff76d9280 >> > 4 OpenImageIO::v1_3::ImageInput::read_scanlines imageinput.cpp >> 197 0x7ffff76d8c24 >> > 5 OpenImageIO::v1_3::ImageInput::read_scanlines imageinput.cpp >> 165 0x7ffff76d8977 >> > 6 OpenImageIO::v1_3::ImageInput::read_image imageinput.cpp 631 >> 0x7ffff76db3c8 >> > 7 main show.cpp 31 0x4012b7 >> > >> > >> > I compiled OIIO from the git commit >> d64b9ac8a63261040ae0263b0709924d8fecf4df (Tue Sep 3 12:53:12 2013 -0700). >> > >> > I appreciate any help. >> > _______________________________________________ >> > Oiio-dev mailing list >> > [email protected] >> > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >> >> -- >> Larry Gritz >> [email protected] >> >> >> _______________________________________________ >> Oiio-dev mailing list >> [email protected] >> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >> > > _______________________________________________ > Oiio-dev mailing list > [email protected] > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org > > > -- > Larry Gritz > [email protected] > > > > _______________________________________________ > Oiio-dev mailing list > [email protected] > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org > >
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