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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

~2h ago

sinus: @evvvvil: very impressive stuff! keep on marching the rays!You´ll never walk alone!

~18h ago

evvvvil: @mediadog, thankx for pointing it out broski. Wicked.

~2d ago

domj: Catching up with the Midweek Patch Therapy excerpts, expect more videos over the week. https://youtu.be/36r8LnHaS7g

~2d ago

mediadog: @evvvvil hey you made the webgl-dev-list cool stuff list: http://gfxprose.blogspot.com/2020/05/cool-webgl-stuff-2020-05-21.html

~4d ago

evvvvil: Yo I'm live doing a VJ set made in vvvv for OUTLINE demoparty with OddJohn DJing! Come see us play here: https://www.twitch.tv/outlinedemoparty/

~5d ago

domj: A blast to read with great references. Thoughts on how to make programming more learnable and understandable. http://worrydream.com/LearnableProgramming/

~5d ago

gegenlicht: @evvvvil damn. - missed it. Such unique styles, others would create 1000 twitter loops from one of ur sessions. :3 #bobrossmarch

~6d ago

sebescudie: Vous voulez vous mettre à #vvvv ou vous connaissez quelqu'un qui aimerait? Je donne un webinaire en français! https://nodeforum.org/announcements/introduction-au-creative-coding-avec-vvvv-gamma/

~6d ago

domj: Hope to see you at Midweek Patch Therapy at 17:30 today! https://therapy.domj.net/

~6d ago

domj: @evvvvil ooh that electric fog at 2:30