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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

~7min ago

antokhio: try if contrl-d works on nodes pls

~4h ago

mediadog: I'm seeing enough odd things and exceptions when quitting that it smells like mem corruption somewhere.

~7h ago

u7angel: seen one too. made AvoidNil(switch insode) turn red. i'm still trying to hunt this down

~9h ago

sunep: @ele that could explain some of the problems I have had lately

~11h ago

elektromeier: theres some weird, nasty framedelay bugs going on in b33.3. so weird that i havent been able to reproduce it in a simple patch

~1d ago

levi: @joreg great thanks

~1d ago

joreg: @levi: if this is dx11 read install guide here: directx11-nodes-alpha

~1d ago

tonfilm: data table remake: vvvv.datatable

~1d ago

levi: just updated machine to 33.3. all assimp nodes not working. setup looks allright.any ideas?