cv.jit 1.6 beta 1 release
Mar 3, 2008 at 10:39am
cv.jit 1.6 beta 1 release
This is to let you know that I have released a new update to the cv.jit computer vision library.
Version 1.6 is now distributed as a true universal binary on OSX.
Apart from that, there are relatively few changes.
Two new externals have been added:
cv.jit.shift implements the MeanShift and CAMShift trackers which allow for relatively efficient and robust tracking of regions in a greyscale image.
cv.jit.resize, well, resizes. Since bicubic interpolation is used, down-sampled matrices will appear anti-aliased.
Some minor changes to existing objects:
There is now no limit to the number of points cv.jit.track can track at the same time. Of course, you should expect sluggish performance for very large number of points but 255 is no longer a hard-coded limit.
You can now query cv.jit.faces for the number of detected faces. This makes it easier to filter the dummy matrices that are output when no face has been detected.
cv.jit.features can now also compute features with sub-pixel accuracy for better tracking initialization.
On OSX, cv.jit.erode and cv.jit.dilate now use Core Image which means they now run much, much faster.
A number of bugs have also been fixed.
This first beta has been tested on Windows XP, Mac OS 10.4 with both Intel and PPC machines. It has not yet been tested on Vista or OS 10.5, though I do not think there should be any problem.
As always, I appreciate bug reports and comments!
Hope this will come useful.
Mar 3, 2008 at 2:40pm
thank you Jean-Marc, always a pleasure to use cv.jit objects.
thanks again for the cv.jit packge which is one of the core attributes of
On Mon, Mar 3, 2008 at 12:39 PM, Jean-Marc Pelletier
Mar 3, 2008 at 4:42pm
a quick one, this patch will down-res a 640×480 camera grab to 80×60, detect
one minor problem, on windows i had to add the cv.jit-supportdata subdir to
this is for windows, to make it work on mac change the [jit.dx.grab] to [
#P window setfont “Sans Serif” 9.;
On Mon, Mar 3, 2008 at 4:40 PM, yair reshef
> thank you Jean-Marc, always a pleasure to use cv.jit objects.
Mar 4, 2008 at 3:51am
> one minor problem, on windows i had to add the cv.jit-supportdata subdir to
Really? I tried it on two different computers and I can’t seem to be able to reproduce the problem. The models load fine. In the cv.jit.blobs.recon help file can you load the training data properly? Also, can you read the test images for the cv.jit.blobs.*** objects (arrows.gif and abstract.jpg)?
Mar 4, 2008 at 7:41am
ok, my bad. it works without specifying the path. probably didn’t restart
On Tue, Mar 4, 2008 at 5:51 AM, Jean-Marc Pelletier
Mar 15, 2008 at 3:35pm
I don’t seem to get the cv.jit package fully to work.
any help appreciated
Mar 17, 2008 at 9:27am
I’m terribly sorry about that. The wrong zip file found its way on the server when I did minor maintenance. Download everything again, it should work now.
Apologies for the inconvenience.
Quote: Tim van Elferen wrote on Sat, 15 March 2008 09:35
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