小编Afr*_*wan的帖子

我有光反射的问题,这是用标准相机拍摄的照片

和我做的过程

1. blur the image
    Imgproc.GaussianBlur(blurred, blurred, new Size(17, 17),
    Imgproc.BORDER_ISOLATED);
2. create second empty image that using hsv
    Imgproc.cvtColor(gray0, gray0, Imgproc.COLOR_BGR2HSV);
3. mix the image color chanel (fromto {0,0})
    Core.mixChannels(blurredlist, graylist, fromto);
4. Threshold, Canny, and delate
Imgproc.threshold(gray0, gray0, 126, 255, Imgproc.THRESH_TRUNC);
Imgproc.Canny(gray0, gray0, 50, 70);
Imgproc.dilate(gray0, gray0, Mat.ones(new Size(3, 3), 0));
5. finding the contour
    Imgproc.findContours(gray0, contours, new Mat(), Imgproc.RETR_EXTERNAL,
        Imgproc.CHAIN_APPROX_SIMPLE);
6. magicall filter for biggest contour and stuff

这是结果 如何从检测到的轮廓中移除背光或连接虚线？

我尝试使用glkview实现视频输入,但是当我尝试旋转旋转时总是从connectionWithMediaType返回nil.

这是我的设置

override public func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view.
    videoFeed = GLKView(frame: self.view.bounds, context: EAGLContext(API: .OpenGLES2))
    videoFeed.autoresizingMask = [UIViewAutoresizing.FlexibleWidth, UIViewAutoresizing.FlexibleHeight]
    videoFeed.translatesAutoresizingMaskIntoConstraints = true
    videoFeed.contentScaleFactor = 1.0
    self.view.addSubview(videoFeed)
    renderContext  = CIContext(EAGLContext: videoFeed.context)
    sessionQueue = dispatch_queue_create("dCamSession", DISPATCH_QUEUE_SERIAL)
    videoFeed.bindDrawable()
}

override public func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)
    startSession()
}

func createSession() -> AVCaptureSession {
    let cam = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo)
    var input:AVCaptureInput
    do {
        input = try AVCaptureDeviceInput(device: cam)
    } catch _ as NSError {
        print("Cannot Init …