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ruby-opencv/examples/face_detect.rb

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#!/usr/bin/env ruby
# face_detect.rb
require "rubygems"
require "opencv"
include OpenCV
window = GUI::Window.new("face detect")
capture = CvCapture.open
detector = CvHaarClassifierCascade::load("C:/Program Files/OpenCV/data/haarcascades/haarcascade_frontalface_alt.xml")
while true
key = GUI::wait_key(1)
image = capture.query
detector.detect_objects(image){|i|
image.rectangle! i.top_left, i.bottom_right, :color => CvColor::Red
}
window.show image
next unless key
case key.chr
when "\e"
exit
end
end