[PD] GEM: video analysis
Florian Walter
flo at earshot.de
Tue Jul 4 01:02:32 CEST 2006
Hallo,
I would like to do some video analysis to control the playback of
audio files. pix_movement and pix_blob work quite well, but now I
would like to go into details and have some questions:
- How can I apply a color filter to an image?
I would like to distinguish the movement of different colors...
- Is there an object that returns the total brightness of an image? Or
are there other possibilities to detect the "amount" of movment in
a video?
(I read about pix_mean_color in the archives but I can't find it in
gem 0.90.1...)
- I would like to recognize whether big blocks of a single color or
fine noise-like structures are moving. Downsamling might be a good
solution to get away the fine structures and to reduce the number of
pixels inside of a colored block that are not recognized as moving.
pix_resize didn't change anything (are there any parameters I
can pass to that object?) and needs lots of computing power...
Any ideas how to solve this problem?
Thank you for any ideas or suggestions!
I am doing my first steps with pd (and image processing), so probably
I have overlooked several things...
ciao, Florian
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