Avisynth Tracking Filter

[Wilbert]

Shlomo posted his Tracking Filter to avisynth.org:
Author: Shlomo Matichin
plugin: https://sourceforge.net/projects/avisynthtrackin/
YouTube demo: http://www.youtube.com/watch?v=SQ-JtJs7US0
license: GPL

I can't find the plugin itself though, perhaps i'm looking in the wrong place.

[Guest]

I couldn't find any files there either.

[Blue_MiSfit]

Looks like a very cool tool for visual effects! The YouTube demo is interesting!

~MiSfit

[tin3tin]

Wow looks nice. OpenCV + Avisynth rules. :)

Looking forward to try the plugin, when it is uploaded.

Noticed another interesting Avisynth project on Sourceforge to keep an eye on: JAviSynth (http://sourceforge.net/apps/trac/javisynth/)
JAviSynth is a wrapper library that allows AviSynth to be used in the Java programming language.

[tin3tin]

The tracker file is up now. :)

[shlomimatichin]

Hi guys!

Thank you for showing interest! I wanted to post it here myself, and also wanted to post a reply saying when will the download be available, but Doom9 has a five day rule for newbies...

I'm thinking about developing further automatic resizing option (so when following, the input amount of pixels changes according to how big the object is on the screen).

Any feedback will be welcome!

Shlomi.

[AnnaFan777]

Hi guys!

Thank you for showing interest! I wanted to post it here myself, and also wanted to post a reply saying when will the download be available, but Doom9 has a five day rule for newbies...

I'm thinking about developing further automatic resizing option (so when following, the input amount of pixels changes according to how big the object is on the screen).

Any feedback will be welcome!

Shlomi.

can you upload the demo vid to rapidshare or some place
people can download from?

I'm using dial-up, it's impossible to view or dl from youtube..

[um3k]

I wonder, would it be possible to make the coordinates available to other plugins? I think this could be a lot more versatile than just cropping to a subject.

[shlomimatichin]

um3k: already works this way. The filter works "two-pass": in the first "pass" a gui window opens were you select the object. the region selected is searched for "strong features" (subpixel) to track. the coordinate for each feature for each frame is written to a text file... then i've included a python script to average the center of these coordinates (after dicarding the top and bottom 10 precent) and write the result into a ConditionalReader format text file. In the "second pass", i use a duplicate of the crop filter i hacked to receive the coordinates from a ConditionalReader. The text file has a very straight forward format...

If you have any clever ideas i would like to hear more about them...

[scharfis_brain]

Maybe you could put out a deshaker-compatible motion data file?

[shlomimatichin]

hi,

first of all thanks, i was not aware of deshaker. but i think deshaker works best for cam-corder videos. My solution is better for cases such as extreme sports photography, like ski or skydiving, where the camera is head-mounted, and no real time control of zoom and panning is possible. From my short experience, half the skydiving flicks i've seen suffer from sharp head movements by the photographer, and framing issues.

so my question is: why? what kind of an end user will need that?

thanks!
Shlomi.

[tin3tin]

Nice work. I hope that one day arrays or loading+parsing of text files will be functions of Avisynth, so something like this could be done without python.

[Soulhunter]

Nice! The tracking would be also handy for censoring (tracking faces/boobs/whatever -> pixelate/blur)

[birdinred]

i downloaded the .zip and test it following the doc,but failed to get the right result.

the tracking was stored in a .csv file,not in the .txt file.and after dragging the test.avs over the FollowCrop.py,then the Xoffset and Yoffset in the .txt file are all set to Zero.so nothing changed.

if i did any step wrong,anyone can help figure out? TKS.

btw,the demo on Youtube can't be seen anylonger.(now i can see it by a proxy website,the demo is right there...)

+++++++++++++++++
these days i asker for help to a programmer friend and learned some basic python language,and the question has resolved - i need to adjust the resolved frame size.now all worked well,the filter gives a great effect not very correct but more than expected.it looks very well,although i must first get the tracking by hand,but the next using the x and y offset to get my effect in avisynth script can go automatically,near to the professional results.thanks to all,especially to author ShlomiMatichin giving so good gift,thanks.

Usage Demo:
http://www.tudou.com/programs/view/T2g2AT_7Rhs/