Obtaining depth map exception

[kaiwu119]

I use this api to read the short throw depth map, get the depth map of the current frame of the SoftwareBitmap type, and save the data in byte[]. My code as follow： ` SensorFrame latestShortDepthCameraFrame = _shortDepthMediaFrameSourceGroup.GetLatestSensorFrame( _sensorTypeResearch); var DepthFrame = latestShortDepthCameraFrame.SoftwareBitmap; DepthFrame = SoftwareBitmap.Convert(DepthFrame, BitmapPixelFormat.Rgba8, BitmapAlphaMode.Premultiplied); var w = DepthFrame.PixelWidth; var h = DepthFrame.PixelHeight;

         Destroy(_pvDepthTexture);
        _pvDepthTexture = new Texture2D(
            w,
            h,
            TextureFormat.RGBA32, false);
        if (bytes==null)
            {
                bytes = new byte[w * h * 4];
            }

        DepthFrame.CopyToBuffer(bytes.AsBuffer());
        DepthFrame.Dispose();
         _pvDepthTexture.LoadRawTextureData(bytes);

`

But when I used it to visualize it, I found that the picture was almost completely black, and I also tested the maximum value of 3 in the output byte[], which is really confusing for me as a novice. My expectation is that the obtained depth map is consistent with the depth map obtained in the sample program Recorder. Can someone help me solve this problem?