83 lines
1.7 KiB
Go
83 lines
1.7 KiB
Go
// Copyright 2011 <chaishushan@gmail.com>. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"fmt"
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"os"
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"path"
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"runtime"
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//"github.com/lazywei/go-opencv/opencv"
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"../opencv" // can be used in forks, comment in real application
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)
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func main() {
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_, currentfile, _, _ := runtime.Caller(0)
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filename := path.Join(path.Dir(currentfile), "../images/lena.jpg")
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if len(os.Args) == 2 {
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filename = os.Args[1]
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}
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image := opencv.LoadImage(filename)
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if image == nil {
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panic("LoadImage fail")
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}
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defer image.Release()
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w := image.Width()
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h := image.Height()
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// Create the output image
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cedge := opencv.CreateImage(w, h, opencv.IPL_DEPTH_8U, 3)
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defer cedge.Release()
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// Convert to grayscale
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gray := opencv.CreateImage(w, h, opencv.IPL_DEPTH_8U, 1)
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edge := opencv.CreateImage(w, h, opencv.IPL_DEPTH_8U, 1)
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defer gray.Release()
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defer edge.Release()
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opencv.CvtColor(image, gray, opencv.CV_BGR2GRAY)
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win := opencv.NewWindow("Edge")
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defer win.Destroy()
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win.SetMouseCallback(func(event, x, y, flags int, param ...interface{}) {
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fmt.Printf("event = %d, x = %d, y = %d, flags = %d\n",
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event, x, y, flags,
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)
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})
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win.CreateTrackbar("Thresh", 1, 100, func(pos int, param ...interface{}) {
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edge_thresh := pos
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opencv.Smooth(gray, edge, opencv.CV_BLUR, 3, 3, 0, 0)
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opencv.Not(gray, edge)
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// Run the edge detector on grayscale
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opencv.Canny(gray, edge, float64(edge_thresh), float64(edge_thresh*3), 3)
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opencv.Zero(cedge)
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// copy edge points
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opencv.Copy(image, cedge, edge)
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win.ShowImage(cedge)
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fmt.Printf("pos = %d\n", pos)
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})
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win.ShowImage(image)
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for {
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key := opencv.WaitKey(20)
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if key == 27 {
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os.Exit(0)
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}
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}
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os.Exit(0)
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}
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