tir, 23 02 2010 kl. 10:16 +0100, skrev David Grundberg: > Are you running Octave 3.2 or the development version? The 3.2 suffers > from poor imread performance. I patched octave to make imread 10x faster: > > http://hg.savannah.gnu.org/hgweb/octave/rev/13d382fc758b > > There might be a problem with multi-frame images, I don't have any such > image so I can't tell. Do you read the image all at once or frame by frame?
I believe we actually discussed the problem on one of the core Octave lists a couple of days ago. The problem (I think) is that we reading a multi-frame image, Octave reads *all* images into memory and then extracts the one needed image. It would be better if Octave only read the header information and then extracted the needed frame. I tried looking into it, but I couldn't figure out how to do it properly with GraphicsMagick. Søren ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Octave-dev mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/octave-dev
