Tracker

2007-10-29T16:36:25Z

Test: Test mod by CEH as new user "Test".

==Tracker Program Description==

Tracker is a working name for software to track the path of animal movements in experiments.
[[image:TrackerScreenShot.jpg|700px]]

==Source Code and Auto Build==

[http://houptlab.org/xtechops/websvn/listing.php?repname=Houpt+Lab+Source+Code&path=%2FTracker%2F#_Tracker_ Tracker Project Code]

[http://www.magnet.neuro.fsu.edu/LabDisk/CEHoupt/Auto%20Builds/Tracker Tracker Auto Build]

==Proposed Functionality==

Input:

# Quicktime movies of experiment

Outputs:

#Numeric output

## Instantaneous
###time
###position
###orientation
## Derived
###velocity
###distance
###direction of motion
###measure of wall taxis

#Generated Movies

## Extracted data graphic.
## Overlay of extracted data graphic and original video.

==Proposed Implementation==

Time determined from Quicktime movie time stamps.

Position is average position of blob pixels.

Orientation is average vector from average position to blob pixels. Position and orientation can be used to define oval around body.

Direction of motion, velocity and distance are calculated from Time, Position and Orientation in the usual way.

[[image:TrackerAngles.jpg|512px]]

==Proposed Technology==

Cocoa application.

Use QuickTime filter to convert video to 2-color B&W via brightness cutoff.

Filter (either QuickTime or after frame extraction) to clip non-experiment portion of video.

Frame-by-frame code to detect blob and calculate position, etc.

===Alternative Implementation===

Use grayscale instead of B&W. Position, etc would be calculated based on weighted pixels. This would be able to pick up sub-pixel changes and provide smoother, more accurate data.

test.

MagnetoWiki - User contributions [en]

Tracker