func main() {
filename := "../testdata/lena.jpg"
if len(os.Args) == 2 {
filename = os.Args[1]
}
image := opencv.LoadImage(filename)
if image == nil {
log.Fatalf("LoadImage %s failed!", filename)
}
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)
}
func main() {
flag.Parse()
cameras := make([]*opencv.Capture, *flagCamNum)
for i := 0; i < len(cameras); i++ {
cameras[i] = opencv.NewCameraCapture(i)
if cameras[i] == nil {
log.Fatalf("can not open camera %d", i)
}
defer cameras[i].Release()
}
writers := make([]*opencv.VideoWriter, *flagCamNum)
for i := 0; i < len(writers); i++ {
m := cameras[i].QueryFrame()
writers[i] = opencv.NewVideoWriter(
fmt.Sprintf("cam%d_output.avi", i),
opencv.FOURCC('M', 'J', 'P', 'G'), 30,
m.GetWidth(), m.GetHeight(),
1,
)
if writers[i] == nil {
log.Fatalf("can not create writer %d", i)
}
defer writers[i].Release()
}
windows := make([]*opencv.Window, *flagCamNum)
for i := 0; i < len(windows); i++ {
windows[i] = opencv.NewWindow(fmt.Sprintf("Camera: %d", i))
defer windows[i].Destroy()
}
for i := 0; ; i++ {
for idx := 0; idx < *flagCamNum; idx++ {
if m := cameras[idx].QueryFrame(); m != nil {
fmt.Printf("camera(%d): Frame %d\n", idx, i)
windows[idx].ShowImage(m)
writers[idx].WriteFrame(m)
}
}
if key := opencv.WaitKey(30); key == 27 {
break
}
}
fmt.Println("Done")
}
func main() {
filename := "../testdata/fruits.jpg"
if len(os.Args) == 2 {
filename = os.Args[1]
}
img0 := opencv.LoadImage(filename)
if img0 == nil {
log.Fatalf("LoadImage %s failed!", filename)
}
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.GetWidth(), img0.GetHeight(), 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)
}
func main() {
filename := "../testdata/test.avi"
if len(os.Args) >= 2 {
filename = os.Args[1]
}
cap := opencv.NewFileCapture(filename)
if cap == nil {
log.Fatalf("can not open video %s", filename)
}
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\n")
} else {
fmt.Printf("status: palying\n")
}
}
})
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)
if key := opencv.WaitKey(1000 / fps); key == 27 {
break
}
} else {
if key := opencv.WaitKey(20); key == 27 {
break
}
}
}
}
func main() {
filename := "../testdata/lena.jpg"
if len(os.Args) == 2 {
filename = os.Args[1]
}
image := opencv.LoadImage(filename)
if image == nil {
log.Fatalf("LoadImage %s failed!", filename)
}
defer image.Release()
w := image.GetWidth()
h := image.GetHeight()
// 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)
}