c# - 如何将 Kinect v2 保留的 WriteableBitmap 对象保存到 Windows 应用商店应用程序中的图像文件

Question

我有一个 Windows 应用程序 C# 程序，它通过 Kinect v2 红外摄像头检测用户的头部位置。

红外数据保存在WriteableBitmap中，我想将检测到的头部作为图像文件保存在我的硬盘上。

我尝试了很多解决方案，例如 this没有运气。

这是我的头部跟踪代码。 irBitmap 是我的 WritableBitmap，一旦检测到头部，我想将其保存为图像文件。

      void msfr_MultiSourceFrameArrived(MultiSourceFrameReader sender, MultiSourceFrameArrivedEventArgs args)
    {
        using (MultiSourceFrame msf = args.FrameReference.AcquireFrame()) //acquiring frame. 
        {
            if (msf != null) 
            {
                using (BodyFrame bodyFrame = msf.BodyFrameReference.AcquireFrame()) //acquire the body frame now in the msf. 
                {
                    using (InfraredFrame irFrame = msf.InfraredFrameReference.AcquireFrame())
                    {
                        if (bodyFrame != null && irFrame != null)
                        {
                            irFrame.CopyFrameDataToArray(irData);

                            for (int i = 0; i < irData.Length; i++)
                            {
                                byte intensity = (byte)(irData[i] >> 8);
                                irDataConverted[i * 4] = intensity;
                                irDataConverted[i * 4 + 1] = intensity;
                                irDataConverted[i * 4 + 2] = intensity;
                                irDataConverted[i * 4 + 3] = 255;
                            }
                            irDataConverted.CopyTo(irBitmap.PixelBuffer);
                            irBitmap.Invalidate();

                            bodyFrame.GetAndRefreshBodyData(bodies); 
                            bodyCanvas.Children.Clear(); 

                            foreach (Body body in bodies) //now we go trough each of our bodies (in order to look for head) 
                            {
                                if (body.IsTracked) //Chek if the body is tracked 
                                {
                                    Joint headJoint = body.Joints[JointType.Head]; //If body is tracked we will get the head joint
                                    if (headJoint.TrackingState == TrackingState.Tracked) //We need to make sure with this bool that the head is tracked. 
                                    {
                                        DepthSpacePoint dps = sensor.CoordinateMapper.MapCameraPointToDepthSpace(headJoint.Position); //We create a debthspace point so we can draw that into our image. This is drawin in the image. It is the cameraspace point that goes to debthspace.  
                                        Ellipse headCircle = new Ellipse() {Width = 100, Height = 100, Fill =  new SolidColorBrush(Color.FromArgb(255,255,0,0))}; //Ellispe to draw the new heads. 
                                        bodyCanvas.Children.Add(headCircle); //Add the headcircle drawn circle to the canvas.
                                        Canvas.SetLeft(headCircle, dps.X-50); //and now we tell the canvas where to draw this shit. 
                                        Canvas.SetTop(headCircle, dps.Y-50); //       



                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }

对于如何将 WritableBitmap 保存为我的硬盘驱动器上的图像文件的任何建议/帮助/建议，我将不胜感激。

Answer 1

我在类似的项目中使用了以下代码。这里，data 是来自 kinect 的原始图像流。

MemoryStream ms = new MemoryStream(data);
System.Drawing.Image img = System.Drawing.Image.FromStream(ms);
img.Save("./image" + (++imageSerial) + ".png", System.Drawing.Imaging.ImageFormat.Png);