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DetectObject (FreeFrame DShow9)

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about DetectObject (FreeFrame DShow9)

open source

usage

DetectObject is simply a wrapper around the openCV function cvHaarDetectObjects.

DetectObject finds rectangular regions in the given image that are likely to contain objects the cascade has been trained for and returns those regions as a sequence of rectangles. DetectObject scans the image several times at different scales (-> Scale Cascade). Each time it considers overlapping regions in the image and applies the classifiers to the regions. It may also apply some heuristics to reduce number of analyzed regions, such as Canny pruning. After it has proceeded and collected the candidate rectangles (regions that passed the classifier cascade), it groups them and returns a sequence of average rectangles for each large enough group. The default parameters:

  • Scale Cascade = 0.1
  • Min Neighbours = 3
  • Canny Pruning = 0

are tuned for accurate yet slow face detection. For faster face detection on real video images the better settings are:

  • Scale Cascade = 0.2
  • Min Neighbours = 2
  • Canny Pruning = 1

text adopted from:
Emgu CV Library Documentation

Training Files

training files and an application to create those files are shipped with openCVhttp://sourceforge.net/projects/opencvlibrary

there is a wiki with some haarcascade training files for different purposes.

Links

OpenCVwiki

release info

  • 17 06 07
    • added Unique IDs and Lifetime pins (development sponsored by dotdotdot)

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Shoutbox

~9h ago

metrowave: Has anyone used one of these ViDock for using full size PCIe Nvidia cards with a laptop? http://www.villageinstruments.com/tiki-index.php?page=Products

~20h ago

xd_nitro: yes be nice to have a way of doing it. Doesn't come up too often though.

~23h ago

sunep: couldn't there be a "clone and replace" function that solved the save as problem?

~24h ago

joreg: @xd_nitro thats annoying indeed. nut no easy way around it..

~1d ago

xd_nitro: when I 'save As' a module, all other instances of that module also 'save as'. Is there way to prevent this?

~3d ago

xd_nitro: @matka - ah ok thanks. :)

~3d ago

NEON: Please Help - DXT1 Detection --> dxt1-detection-non-specific-player-ex9

~3d ago

woei: vvvv meetup in Prague? Guess there some around at #signalfestival