Wednesday, November 3, 2010
Face Detection trials
Detecting head: while sift shows its robustness in scale and rotation, there is somewhat of an illumination problem
Clearer YOUTUBE videos
http://www.youtube.com/watch?v=mgr96oeXqH0
http://www.youtube.com/watch?v=lapux3e91_Y
http://www.youtube.com/watch?v=bMBNLPcLOVk
Matlab AVI video use
Matlab requires a RAW VIDEO file to be imported and used. however most cameras and recording devices use a compression to reduce file size and so on.
my trouble was an AVI file with a different codec. when i used AVIREAD in matlab, it gave me an error that it wasnt able to find the codedc or the frames are not known.
one option that is FREE:
use FFMPEG im downloading the executable for windows from this URL
ffmpeg is a command line tool, so in order to convert to a raw video to use in maatlab you use this command:
foo.avi is your compressed video file
bar.avi is your new raw video file name that you will use in MATLAB
my trouble was an AVI file with a different codec. when i used AVIREAD in matlab, it gave me an error that it wasnt able to find the codedc or the frames are not known.
one option that is FREE:
use FFMPEG im downloading the executable for windows from this URL
ffmpeg is a command line tool, so in order to convert to a raw video to use in maatlab you use this command:
c:/> ffmpeg -i foo.avi -vcodec rawvideo bar.avi
foo.avi is your compressed video file
bar.avi is your new raw video file name that you will use in MATLAB
Labels:
avi matlab,
ffmpeg,
matlab compression,
matlab ffmpeg,
raw video,
raw video matlab
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