» DetectObject (FreeFrame DShow9)
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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

~5h ago

svdk: I plan to release all the patches involves as soon as they're cleaned. Greeting from Strasbourg

~5h ago

svdk: hi!saw you had a lot of fun @node 17.Disappointed I couldn't make it!. Some video I made using vvvv 4some parts. https://goo.gl/1UM8Bp

~12h ago

okvrdz: @joreg Thanks!

~17h ago

sunep: happy Birthday @tonfilm

~20h ago

microdee: @synth: care to make an issue on github with console output?

~1d ago

synth: @microdee cant install DX11 with it, cant choose not to install it either. Cant install anything without disregarding dependensies

~1d ago

joreg: @okvrdz i recommend starting here: topics it should give you a good overview of what's all there

~1d ago

microdee: vpm is updated and DO update as it fixes an issue with new latest DX11 script https://github.com/vvvvpm/vpm/releases/latest

~1d ago

okvrdz: to those experienced v4 users... What in your opinion is the best/easiest way to learn nodes and what they do/usage/capabilities?

~2d ago

bildwerk: @jzzxh its on the todo list :)