mirror of
https://github.com/ruby-opencv/ruby-opencv
synced 2023-03-27 23:22:12 -04:00
22 lines
581 B
Ruby
22 lines
581 B
Ruby
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#!/usr/bin/env ruby
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# -*- mode: ruby; coding: utf-8-unix -*-
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# Alpha blending sample with GUI
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require 'opencv'
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include OpenCV
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img1 = IplImage.load('lenna.jpg', CV_LOAD_IMAGE_ANYCOLOR | CV_LOAD_IMAGE_ANYDEPTH)
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img2 = IplImage.load('tiffany.jpg', CV_LOAD_IMAGE_ANYCOLOR | CV_LOAD_IMAGE_ANYDEPTH)
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window = GUI::Window.new('Alpha blend')
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max = 100.0
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val = max / 2.0
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window.set_trackbar("Alpha", max, val) { |v|
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a = v.to_f / max
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window.show CvMat.add_weighted(img1, a, img2, 1.0 - a, 0)
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}
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window.show CvMat.add_weighted(img1, val / max, img2, 1.0 - val / max, 0)
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GUI::wait_key
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