OpenCV ืืื ืึท ืืืืืืึธืืขืง ืืืืืื ื ืคึฟืึทืจ ืงืึธืืคึผืืืืขืจ ืืขืืื ื ืคึผืจืึทืืืฉืขืงืก. ืื ืืื ืฉืืื ืืื ืืขืจื 20 ืืืจ. ืืื ืืขืืืืื ื ืขืก ืืื ืงืึธืืขืืข ืืื ื ืึธื ื ืืฆื ืขืก ืคึฟืึทืจ ืืืื C ++ ืืื ืคึผืืืืึธื ืคึผืจืึทืืืฉืขืงืก ืืืืึทื ืขืก ืืื ืืื ืฉืืืฆื ืคึฟืึทืจ ืื ืฉืคึผืจืึทืื.
ืึธืืขืจ ืืืขื ืืื ืกืืึทืจืืขื ืืขืจื ืขื ืืื ื ืืฆื Go, ืืื ืืขืืืืจื ืืื ืืขืจืขืกืืจื ืืื ืฆื OpenCV ืงืขื ืืืื ืืขืืืืื ื ืฆื ืึทืจืืขืื ืืื ืืขื ืฉืคึผืจืึทื. ืืื ืืขืจ ืฆืืื, ืขืก ืืขื ืขื ืฉืืื ืืืืฉืคืืื ืืื ืืืืึธืจืืึทืื ืืืืฃ ืื ืืึทืืจืืืฉืึทื, ืึธืืขืจ ืขืก ืืขืืืขื ืฆื ืืืจ ืึทื ืืื ืืขื ืขื ืืขืืืขื ืฆื ืงืึธืืคึผืืืฆืืจื. ื ืืืกื ืฉืคึผืขืืขืจ, ืืื ืืขืคึฟืื ืขื ืึท ืจืึทืคึผืขืจ ืืืฉืืคื ืืืจื ืื ืืืืจืื ืืจืืคืข ืืึทื ืฉืึทืคึฟื. ืืื ืืขื ืึทืจืืืงื, ืืื ืืืขื ืืืืึทืื ืืืจ ืืื ืฆื ืึธื ืืืืื ืืื GoCV ืืืจื ืืขืืืขืืึธืคึผืื ื ืึท ืคึผืฉืื ืคึผื ืื ืืขืจืงืขื ืื ื ืกืืกืืขื ืืื Haar Cascades.
Skillbox ืจืขืงืึทืืขื ืื: ืคึผืจืึทืงืืืฉ ืงืืจืก .
ืืืจ ืืขืจืืึธื ืขื ืืืจ: ืคึฟืึทืจ ืึทืืข ืืืืขื ืขืจ ืคืื "ืืืจ" - ืึท ืึทืจืึธืคึผืจืขืืขื ืขื ืคืื 10 ืจืืื ืืืขื ืืืจ ืคืึทืจืฉืจืืึทืื ืืื ืงืืื ืกืงืืืืึธืงืก ืงืืจืก ื ืืฆื ืื ืคึผืขืจืืึธืืฉืึทื ืึทื ืงืึธื "ืืืจ".
ืืืึธืก ืืื ืคืืจืืื ืื:
- ืืืื;
- OpenCV (ืื ืกืืึทืืืขืจ ืืื ืงืก ืืื ืื);
- ืืืขื ืึธืืขืจ ืจืขืืืืขืจ ืืืืืขื ืึทืคึผืึทืจืึทื.
ืื ืกืืึทืืืจืื ื
- ืืื ืืงืก:
- macOS:
- ืคึฟืขื ืฆืืขืจ:
ืืืึทืฉืคึผืื ืงืกื ืืืงืก
ืืื ืืขืจ ืขืจืฉืืขืจ ืืืึทืฉืคึผืื, ืืืจ ืืืขืื ืคึผืจืืืืจื ืฆื ืฉืึทืคึฟื ืึท ืึทืคึผืืึทืงืืืฉืึทื ืืืึธืก ืขืคึฟื ื ืึท ืคึฟืขื ืฆืืขืจ ืืื ืึท ืึทืคึผืึทืจืึทื ืืืืืขื ืืืึทื.
ืขืจืฉืืขืจ ืืืจ ืืึทืจืคึฟื ืฆื ืึทืจืืึทื ืคืืจ ืื ืืืืืจืขืจืื ืืืจืฃ ืคึฟืึทืจ ืึทืจืืขื.
ืึทืจืืึทื ืคืืจ (
"ืงืืึธืฅ"
"gocv.io/x/gocv"
)
ื ืึธื ืืขื, ืืืจ ืืึทืจืคึฟื ืฆื ืฉืึทืคึฟื ืึท VideoCapture ืืืืคืขืฅ ื ืืฆื ืื VideoCaptureDevice ืคืื ืงืฆืืข. ืื ืืขื ืขืจ ืืืื ืขืก ืืขืืืขื ืฆื ืืึทืคึผื ืึท ืืืืืขื ืืืึทื ืืื ืึท ืึทืคึผืึทืจืึทื. ืื ืคึฟืื ืงืฆืืข ื ืืฆื ืึท ืืึทื ืฅ ื ืืืขืจ ืืื ืึท ืคึผืึทืจืึทืืขืืขืจ (ืขืก ืจืขืคึผืจืึทืืขื ืฅ ืื ืืืื ืฉืืึทื).
webcam, err := gocv.VideoCaptureDevice(0)
if err != nil { log.Fatalf(โerror opening web cam: %vโ, err)
}
defer webcam.Close()ืืืฆื ืืืจ ืืึทืจืคึฟื ืฆื ืฉืึทืคึฟื ืึท n-ืืืืขื ืฉืึทื ืึทื ืืึทืืจืืฅ. ืขืก ืืืขื ืงืจืึธื ืืืืืขืจ ืืืืขื ืขื ืคึฟืื ืืขืจ ืึทืคึผืึทืจืึทื.
img := gocv.NewMat()
defer img.Close()ืฆื ืืืืึทืื ืึท ืืืืืขื ืืืึทื, ืืืจ ืืึทืจืคึฟื ืฆื ืฉืึทืคึฟื ืึท ืคึฟืขื ืฆืืขืจ - ืืึธืก ืงืขื ืขื ืืืื ืืขืืื ืืื ืื NewWindow ืคืื ืงืฆืืข.
window := gocv.NewWindow(โwebcamwindowโ)
defer window.Close()ืืืฆื ืืึธืืืจ ืืืื ืฆื ืื ืืขืจืกื ืืฉืืงืึทืืืข ืืืื.
ืืื ื ืืืืืขื ืืื ืึท ืงืขืกืืืืขืจืืืง ืืืึทื ืคืื ืืืื ืจืึธืืขื, ืืืจ ืืึทืจืคึฟื ืฆื ืฉืึทืคึฟื ืึท ืื ืคืึทื ืึทื ืฉืืืืฃ ืฆื ืขื ืืืึทืกืื ืืืืขื ืขื ืื ืืืืืขื ืืืึทื ืคืื ืื ืึทืคึผืึทืจืึทื. ืฆื ืืึธื ืืึธืก, ืืืจ ืืึทืจืคึฟื ืื ืืืืขื ืขื ืืืคึฟื ืคืื ืืขื ืืืคึผ VideoCapture. ืขืก ืืืขื ืืขืจืืืึทืจืื ืึท ืืึทืืข ืืืคึผ (ืื ืืึทืืจืืฅ ืืืจ ืืืฉืืคื ืืืืื), ืืืึธืก ืืืขื ืฆืืจืืงืงืืืขื ืึท ืืืืืึทื ืืืขืจื ืืืึธืก ืื ืืืงืืืฅ ืฆื ืื ืจืึทื ืคืื ืื ืืืืืขืึธืงืึทืคึผืืืจืข ืืื ืืืืขื ืขื ืืฆืืื ืึธืืขืจ ื ืืฉื.
for {
if ok := webcam.Read(&img); !ok || img.Empty( {
log.Println(โUnable to read from the webcamโ) continue
}
.
.
.
}ืืืฆื ืืืจ ืืึทืจืคึฟื ืฆื ืืืืึทืื ืื ืจืึทื ืืื ืื ืืืฉืืคื ืคึฟืขื ืฆืืขืจ. ืื ืคึผืืืืข ืคึฟืึทืจ ืืึธืืืื ื ืฆื ืืขืจ ืืืืึทืืขืจ ืจืึทื ืืื 50 ืืื.
window.IMShow (img)
ืืืื ืืึธื.ืืืืืืงืื (50)
ื ืึธื ืืึธื ืืฉืื ื ืื ืึทืคึผืืึทืงืืืฉืึทื, ืึท ืคึฟืขื ืฆืืขืจ ืืื ืึท ืืืืืขื ืืืึทื ืคึฟืื ืืขืจ ืึทืคึผืึทืจืึทื ืืืขื ืขืคืขื ืขื.
package main
import (
"log"
"gocv.io/x/gocv"
)
func main() {
webcam, err := gocv.VideoCaptureDevice(0)
if err != nil {
log.Fatalf("error opening device: %v", err)
}
defer webcam.Close()
img := gocv.NewMat()
defer img.Close()
window := gocv.NewWindow("webcamwindow")
defer window.Close()
for {
if ok := webcam.Read(&img); !ok || img.Empty() {
log.Println("Unable to read from the webcam")
continue
}
window.IMShow(img)
window.WaitKey(50)
}
}ืืืึทืฉืคึผืื ืงืกื ืืืงืก
ืืื ืืขื ืืืึทืฉืคึผืื, ืืึธืื ืืื ืื ื ืืฆื ืืขื ืคืจืืขืจืืืงื ืืืึทืฉืคึผืื ืืื ืืืืขื ืึท ืคึผื ืื ืืขืจืงืขื ืื ื ืกืืกืืขื ืืืืืจื ืืืืฃ Haar Cascades.
ืืึทืึทืจ ืงืึทืกืงืึทืืขืก ืืขื ืขื ืงืึทืกืงืืื ืงืืึทืกืกืืคืืขืจืก ืืืึธืก ืืขื ืขื ืืจืืื ื ืืื ืื ืืึทืึทืจ ืืืึทืืืขืืขื ืืขืื ืืง. ืืื ืึทื ืึทืืืื ืื ืืืืืฆืขืื ืืื ืึท ืืืื ืฆื ืืขืืขืงื ืืืืขืจ ืคึฟืขืึดืงืืืื. ืฆื ืืขืคึฟืื ืขื ืืขืจ ืืืขืื Haar Cascades, ื ืึธืืืืื ืื ืืื ืงืก ืืื ืื.
ืืจืืคืงืืคืืข ืฉืืื ืืจืืื ื ืงืึทืกืงืืื . ืืื ืืขื ืงืจืึทื ื ืืืึทืฉืคึผืื, ืงืึทืกืงืืื ืืืขื ืืืื ืืขื ืืฆื ืฆื ืืืขื ืืืคืืฆืืจื ืึท ืืขื ืืฉ 'ืก ืคึผื ืื ืคืื ืื ืคืจืึธื ื.
ืืื ืกืืจ ืฆื ืืึธื ืืึธืก, ืืืจ ืืึทืจืคึฟื ืฆื ืฉืึทืคึฟื ืึท ืงืืึทืกืกืืคืืขืจ ืืื ืงืึธืจืืขื ืขืก ืึท ืฉืืื ืืจืืื ื ืืขืงืข (ืืขืจ ืืื ืง ืืื ืืขืืขืื ืืืืื). ืืื ืืึธืื ืฉืืื ืืคึผืืึธืึทืืขื ืื pencv_haarcascade_frontalface_default.xml ืืขืงืข ืฆื ืื ืืืขืืืืืึทืืขืจ ืืื ืืื ืืืขืจ ืคึผืจืึธืืจืึทื ืืื ืืืื.
harrcascade := โopencv_haarcascade_frontalface_default.xmlโclassifier := gocv.NewCascadeClassifier()classifier.Load(harrcascade)
defer classifier.Close()ืฆื ืืขืืขืงื ืคื ืืืขืจ ืืื ืึท ืืืื, ืืืจ ืืึทืจืคึฟื ืฆื ื ืืฆื ืืขื ืืืคึฟื . ืื ืคึฟืื ืงืฆืืข ื ืขืื ืึท ืจืึทื (ืืืคึผ ืืึทืืข) ืืืึธืก ืืื ืคึผืื ืงื ืืืืขื ืขื ืคึฟืื ืื ืืืืืขื ืืืึทื ืคืื ืื ืึทืคึผืึทืจืึทื ืืื ืงืขืจื ืึท ืืขื ืืข ืคืื โโืืืคึผ ืจืขืงืืึทื ืืืข. ืื ืืขื ืืข ืืจืืืก ืจืขืคึผืจืึทืืขื ืฅ ืื ื ืืืขืจ ืคืื ืคื ืืืขืจ ืึทื ืื ืงืืึทืกืกืืคืืขืจ ืืื ืืืืืืช ืฆื ืืขืืขืงื ืืื ืื ืจืึทื. ืืขืจื ืึธื, ืฆื ืืึทืื ืืืืขืจ ืืืจ ืืขื ืืืึธืก ืขืก ืืขืคึฟืื ืขื, ืืึธืื ืืื ืื ืืืขืจืืื ืื ืจืฉืืื ืคืื ืจืขืงืืึทื ืืืึทืื ืืื ืืจืืงื ืื ืจืขืงืืึทื ืืืข ืืืืคืขืฅ ืฆื ืื ืงืึทื ืกืึธืื, ืฉืึทืคึฟื ืึท ืืจืขื ืขืฅ ืึทืจืื ืื ืืืืขืงืืึทื ืืจืึธืืขืง. ืืขื ืงืขื ืขื ืืืื ืืขืืื ืืื ืื ืจืขืงืืึทื ืืืข ืคึฟืื ืงืฆืืข. ืขืก ืืืขื ืึธื ื ืขืืขื ืื ืืึทืืข ืืืืขื ืขื ืืืจื ืื ืึทืคึผืึทืจืึทื, ืื ืจืขืงืืึทื ืืืข ืืืืคืขืฅ ืืืึธืก ืืื ืืขืืืขื ืืืืืขืงืขืจื ืืืจื ืื DetectMultiScale ืืืคึฟื, ืื ืงืึธืืืจ ืืื ืืจืขื ืคึฟืึทืจ ืื ืืจืขื ืขืฅ.
for _, r := range rects {
fmt.Println(โdetectedโ, r)
gocv.Rectangle(&img, r, color, 2)
}
package main
import (
"fmt"
"image/color"
"log"
"gocv.io/x/gocv"
)
func main() {
webcam, err := gocv.VideoCaptureDevice(0)
if err != nil {
log.Fatalf("error opening web cam: %v", err)
}
defer webcam.Close()
img := gocv.NewMat()
defer img.Close()
window := gocv.NewWindow("webcamwindow")
defer window.Close()
harrcascade := "opencv_haarcascade_frontalface_default.xml"
classifier := gocv.NewCascadeClassifier()
classifier.Load(harrcascade)
defer classifier.Close()
color := color.RGBA{0, 255, 0, 0}
for {
if ok := webcam.Read(&img); !ok || img.Empty() {
log.Println("Unable to read from the device")
continue
}
rects := classifier.DetectMultiScale(img)
for _, r := range rects {
fmt.Println("detected", r)
gocv.Rectangle(&img, r, color, 3)
}
window.IMShow(img)
window.WaitKey(50)
}
}ืืื... ืืึธ, ืึทืืฅ ืืึธื ืืืืกืืขืึทืจืืขื! ืืืจ ืืืฆื ืืึธืื ืึท ืคึผืฉืื ืคืึทืกืืึทื ืืขืจืงืขื ืื ื ืกืืกืืขื ืืขืฉืจืืื ืืื Go. ืืืื ืืื ืคึผืืึทื ืฆื ืคืึธืจืืขืฆื ืื ืืงืกืคึผืขืจืึทืืึทื ืฅ ืืื ืฉืึทืคึฟื ื ืืึทืข ืงืื ืืื ืื ืืืจื ืงืึทืืืืื ืื ื Go ืืื OpenCV.
ืืืื ืืืจ ืืขื ื ืืื ืืขืจืขืกืืจื, ืืืืข ืึธืคึผืฉืึทืฆื , ืืืึธืก ืืื ืืขืฉืจืืื ืืื Python ืืื OpenCV. ืขืก ืกืืจืืื ืืึทืื ืืขืจ ืืึธืืขื ื ืึท ืคึผื ืื ืืื ืืืืขืงืืึทื. ืืึธืก ืืื ืืขืจ ืืกืื ืคึฟืึทืจ ืงืจืืืืืื ื ืคืึทืจืฉืืืขื ืข ืงืืืืึทื ืฅ ืืื ืคืึทืจืฉืืืขื ืข ืคึผืจืึธืืจืึทืืืื ื ืฉืคึผืจืึทืื. ืืื ืืืขืื ืงืขื ืขื ืฆื ืคืึทืจืืื ืื ืฆื ืื ืกืขืจืืืขืจ ืืื ืืืืขื ืขื ืืึทืื ืคึฟืื ืืื.
ืืื ืง ืืืจ ืคึฟืึทืจ ืืืืขื ืขื ืืขื ืึทืจืืืงื!
Skillbox ืจืขืงืึทืืขื ืื:
- ืฆืืืื-ืืึธืจ ืคึผืจืึทืงืืืฉ ืงืืจืก .
- ืืืืืื ืืงืจืืื ืึธื ืืืื ืงืืจืก .
- ืคึผืจืึทืงืืืฉ ืืึธืจ ืงืืจืก .
ืืงืืจ: www.habr.com