Пример #1
0
func main() {
	filename := "../images/lena.jpg"
	if len(os.Args) == 2 {
		filename = os.Args[1]
	}

	image := opencv.LoadImage(filename)
	if image == nil {
		panic("LoadImage fail")
	}
	defer image.Release()

	win := opencv.NewWindow("Go-OpenCV")
	defer win.Destroy()

	win.SetMouseCallback(func(event, x, y, flags int) {
		fmt.Printf("event = %d, x = %d, y = %d, flags = %d\n",
			event, x, y, flags,
		)
	})
	win.CreateTrackbar("Thresh", 1, 100, func(pos int) {
		fmt.Printf("pos = %d\n", pos)
	})

	win.ShowImage(image)

	opencv.WaitKey(0)
}
Пример #2
0
func main() {
	filename := "../data/???.avi"
	if len(os.Args) == 2 {
		filename = os.Args[1]
	} else {
		fmt.Printf("Usage: go run player.go videoname\n")
		os.Exit(0)
	}

	cap := opencv.NewFileCapture(filename)
	if cap == nil {
		panic("can not open video")
	}
	defer cap.Release()

	win := opencv.NewWindow("GoOpenCV: VideoPlayer")
	defer win.Destroy()

	fps := int(cap.GetProperty(opencv.CV_CAP_PROP_FPS))
	frames := int(cap.GetProperty(opencv.CV_CAP_PROP_FRAME_COUNT))
	stop := false

	win.SetMouseCallback(func(event, x, y, flags int) {
		if flags&opencv.CV_EVENT_LBUTTONDOWN != 0 {
			stop = !stop
			if stop {
				fmt.Printf("status: stop")
			} else {
				fmt.Printf("status: palying")
			}
		}
	})
	win.CreateTrackbar("Seek", 1, frames, func(pos int) {
		cur_pos := int(cap.GetProperty(opencv.CV_CAP_PROP_POS_FRAMES))

		if pos != cur_pos {
			cap.SetProperty(opencv.CV_CAP_PROP_POS_FRAMES, float64(pos))
			fmt.Printf("Seek to %d(%d)\n", pos, frames)
		}
	})

	for {
		if !stop {
			img := cap.QueryFrame()
			if img == nil {
				break
			}

			frame_pos := int(cap.GetProperty(opencv.CV_CAP_PROP_POS_FRAMES))
			if frame_pos >= frames {
				break
			}
			win.SetTrackbarPos("Seek", frame_pos)

			win.ShowImage(img)
			key := opencv.WaitKey(1000 / fps)
			if key == 27 {
				os.Exit(0)
			}
		} else {
			key := opencv.WaitKey(20)
			if key == 27 {
				os.Exit(0)
			}
		}
	}

	opencv.WaitKey(0)
}
Пример #3
0
func main() {
	filename := "../images/lena.jpg"
	if len(os.Args) == 2 {
		filename = os.Args[1]
	}

	image := opencv.LoadImage(filename)
	if image == nil {
		panic("LoadImage fail")
	}
	defer image.Release()

	w := image.Width()
	h := image.Height()

	// Create the output image
	cedge := opencv.CreateImage(w, h, opencv.IPL_DEPTH_8U, 3)
	defer cedge.Release()

	// Convert to grayscale
	gray := opencv.CreateImage(w, h, opencv.IPL_DEPTH_8U, 1)
	edge := opencv.CreateImage(w, h, opencv.IPL_DEPTH_8U, 1)
	defer gray.Release()
	defer edge.Release()

	opencv.CvtColor(image, gray, opencv.CV_BGR2GRAY)

	win := opencv.NewWindow("Edge")
	defer win.Destroy()

	win.SetMouseCallback(func(event, x, y, flags int, param ...interface{}) {
		fmt.Printf("event = %d, x = %d, y = %d, flags = %d\n",
			event, x, y, flags,
		)
	})

	win.CreateTrackbar("Thresh", 1, 100, func(pos int, param ...interface{}) {
		edge_thresh := pos

		opencv.Smooth(gray, edge, opencv.CV_BLUR, 3, 3, 0, 0)
		opencv.Not(gray, edge)

		// Run the edge detector on grayscale
		opencv.Canny(gray, edge, float64(edge_thresh), float64(edge_thresh*3), 3)

		opencv.Zero(cedge)
		// copy edge points
		opencv.Copy(image, cedge, edge)

		win.ShowImage(cedge)

		fmt.Printf("pos = %d\n", pos)
	})
	win.ShowImage(image)

	for {
		key := opencv.WaitKey(20)
		if key == 27 {
			os.Exit(0)
		}
	}

	os.Exit(0)
}
Пример #4
0
func main() {
	filename := "../images/fruits.jpg"
	if len(os.Args) == 2 {
		filename = os.Args[1]
	}

	img0 := opencv.LoadImage(filename)
	if img0 == nil {
		panic("LoadImage fail")
	}
	defer img0.Release()

	fmt.Print("Hot keys: \n",
		"\tESC - quit the program\n",
		"\tr - restore the original image\n",
		"\ti or ENTER - run inpainting algorithm\n",
		"\t\t(before running it, paint something on the image)\n",
	)

	img := img0.Clone()
	inpainted := img0.Clone()
	inpaint_mask := opencv.CreateImage(img0.Width(), img0.Height(), 8, 1)

	opencv.Zero(inpaint_mask)
	//opencv.Zero( inpainted )

	win := opencv.NewWindow("image")
	defer win.Destroy()

	prev_pt := opencv.Point{-1, -1}
	win.SetMouseCallback(func(event, x, y, flags int, param ...interface{}) {
		if img == nil {
			os.Exit(0)
		}

		if event == opencv.CV_EVENT_LBUTTONUP ||
			(flags&opencv.CV_EVENT_FLAG_LBUTTON) == 0 {
			prev_pt = opencv.Point{-1, -1}
		} else if event == opencv.CV_EVENT_LBUTTONDOWN {
			prev_pt = opencv.Point{x, y}
		} else if event == opencv.CV_EVENT_MOUSEMOVE &&
			(flags&opencv.CV_EVENT_FLAG_LBUTTON) != 0 {
			pt := opencv.Point{x, y}
			if prev_pt.X < 0 {
				prev_pt = pt
			}

			rgb := opencv.ScalarAll(255.0)
			opencv.Line(inpaint_mask, prev_pt, pt, rgb, 5, 8, 0)
			opencv.Line(img, prev_pt, pt, rgb, 5, 8, 0)
			prev_pt = pt

			win.ShowImage(img)
		}
	})
	win.ShowImage(img)
	opencv.WaitKey(0)

	win2 := opencv.NewWindow("inpainted image")
	defer win2.Destroy()
	win2.ShowImage(inpainted)

	for {
		key := opencv.WaitKey(20)
		if key == 27 {
			os.Exit(0)
		} else if key == 'r' {
			opencv.Zero(inpaint_mask)
			opencv.Copy(img0, img, nil)
			win.ShowImage(img)
		} else if key == 'i' || key == '\n' {
			opencv.Inpaint(img, inpaint_mask, inpainted, 3,
				opencv.CV_INPAINT_TELEA,
			)
			win2.ShowImage(inpainted)
		}
	}
	os.Exit(0)
}