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main.go
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main.go
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package main
import (
"gocv.io/x/gocv"
"fmt"
"image"
"github.com/hybridgroup/go-ncs"
"io/ioutil"
)
type DetectionResult struct {
boxes []BBox
img gocv.Mat
}
type BBox struct {
topleft image.Point
bottomright image.Point
center image.Point
label int
confidence float32
}
func main() {
useCaffeOrNCS := "ncs" // "ncs" or "caffe"
// Setup Channels
img_chan := make(chan *gocv.Mat, 1)
res_chan := make(chan DetectionResult, 1)
// Start Camera / Image Producer
go producer(img_chan)
// Start Worker (caffe or ncs)
if useCaffeOrNCS == "caffe" {
go caffeWorker(img_chan, res_chan)
}
if useCaffeOrNCS == "ncs" {
// bootstrapping NCS devices
const numNCSDevices= 2
const graphFileName= "tiny-yolov2-voc.ncsmodel"
for deviceID := 0; deviceID < numNCSDevices; deviceID++ {
res, name := ncs.GetDeviceName(deviceID)
if res != ncs.StatusOK {
fmt.Printf("NCS Error: %v\n", res)
return
}
fmt.Println(deviceID, "NCS: " + name)
// open NCS device
fmt.Println("Opening NCS device " + name + "...")
status, s := ncs.OpenDevice(name)
if status != ncs.StatusOK {
fmt.Printf("NCS Error: %v\n", status)
return
}
defer s.CloseDevice()
// load precompiled graph file in NCS format
data, err := ioutil.ReadFile(graphFileName)
if err != nil {
fmt.Println("Error opening graph file:", err)
return
}
// allocate graph on NCS stick
fmt.Println("Allocating graph...")
allocateStatus, graph := s.AllocateGraph(data)
if allocateStatus != ncs.StatusOK {
fmt.Printf("NCS Error: %v\n", allocateStatus)
return
}
defer graph.DeallocateGraph()
// Start NCS Worker
go ncsWorker(graph, img_chan, res_chan)
}
}
// Display Detections
showImg := gocv.NewMat()
window := gocv.NewWindow("Hello")
defer window.Close()
imgCounter := 0
for res := range(res_chan) {
showImg = res.img
fmt.Println(fmt.Sprintf("\nImage #%d", imgCounter))
imgCounter++
for _, box := range(res.boxes) {
b := image.Rectangle{image.Point{X:box.topleft.X, Y:box.topleft.Y}, image.Point{X:box.bottomright.X, Y:box.bottomright.Y}}
gocv.Rectangle(&showImg, b, colors[box.label % len(colors)], 2)
textPos := box.topleft
textPos.Y = textPos.Y-10
gocv.PutText(&showImg, classNames[box.label], textPos, 1, 1.0, colors[box.label % len(colors)], 2)
//fmt.Println(classNames[box.label], box.confidence)
}
window.IMShow(showImg)
if window.WaitKey(1) >= 0 {
break
}
}
}
func producer(img_chan chan <- *gocv.Mat) {
webcam, _ := gocv.VideoCaptureDevice(0)
webcam.Set(3, 800)
webcam.Set(4, 450)
webcam.Set(5, 30)
for {
img := gocv.NewMat()
webcam.Read(&img)
// Just for Debugging: Override Camera with image from disk
//img = gocv.IMRead("person.jpg", 1)
img_chan <- &img
}
}