mirror of
https://github.com/ruby-opencv/ruby-opencv
synced 2023-03-27 23:22:12 -04:00
41 lines
958 B
Ruby
Executable file
41 lines
958 B
Ruby
Executable file
#!/usr/bin/env ruby
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# convexhull.rb
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require "rubygems"
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require "opencv"
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require "pp"
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include OpenCV
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window = GUI::Window.new("convexhull")
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pp CvCapture::INTERFACE
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capture = CvCapture::open
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accuracy = 0.1
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t = window.set_trackbar("accuracy", 100, 1){|v|
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accuracy = 0.1 * v
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}
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while true
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key = GUI::wait_key(1)
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image = capture.query
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gray = image.BGR2GRAY
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bin = gray.threshold_binary(0x44, 0xFF)
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contours = bin.find_contours
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while contours
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image.poly_line! contours.approx(:accuracy => accuracy), :color => CvScalar::Red
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contours.convexity_defects.each{|cd|
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image.circle! cd.start, 1, :color => CvScalar::Blue
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image.circle! cd.end, 1, :color => CvScalar::Blue
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image.circle! cd.depth_point, 1, :color => CvScalar::Blue
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}
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contours = contours.h_next
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end
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#pts = gray.good_features_to_track(0.01, 10)
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#puts pts.length
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window.show image
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next unless key
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case key.chr
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when "\e"
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exit
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end
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end
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