分享一下转图方法，转WriteableBitmap

1. #halcon 转
   
2. public static WriteableBitmap ToWriteableBitmap(this HObject hObject)
   
3. {
   
4.     HOperatorSet.GenEmptyObj(out var dataHObject);
   
5. 
   
6.     var pixelFormat = PixelFormat.Undefined;
   
7.     //判断halcon通道个数
   
8.     HOperatorSet.CountChannels(hObject, out var channelCount);
   
9.     if (channelCount == 1)
   
10.     {
    
11.         dataHObject = hObject;
    
12.         pixelFormat = PixelFormat.Format8bppIndexed;
    
13.     }
    
14.     else if (channelCount == 3)
    
15.     {
    
16.         //把三通道生成交错图片
    
17.         HOperatorSet.InterleaveChannels(hObject, out dataHObject, "rgb", "match", 0);
    
18.         pixelFormat = PixelFormat.Format24bppRgb;
    
19.     }
    
20.     HOperatorSet.GetImagePointer1(dataHObject, out var imagePtr, out var type, out var width, out var height);
    
21.     if (channelCount == 3)
    
22.     {
    
23.         width /= 3;
    
24.     }
    
25.     var strideInfo = new BitmapStrideInfo(width, height, pixelFormat);
    
26.     WriteableBitmap writeableBitmap = null;
    
27.     if (channelCount == 1)
    
28.     {
    
29.         writeableBitmap =
    
30.             new WriteableBitmap(width, height, 96, 96, PixelFormats.Indexed8, BitmapPalettes.Gray256);
    
31.     }
    
32.     else if(channelCount == 3)
    
33.     {
    
34.         writeableBitmap =
    
35.             new WriteableBitmap(width, height, 96, 96, PixelFormats.Rgb24, null);
    
36.     }
    
37.     else
    
38.     {
    
39.         throw new NotImplementedException($"{channelCount}通道数暂不支持");
    
40.     }
    
41.     try
    
42.     {
    
43.         writeableBitmap.Lock();
    
44.         unsafe
    
45.         {
    
46.             var readSpan = new Span<byte>(imagePtr.IP.ToPointer(), strideInfo.EfficientTotalSize);
    
47.             var writeSpan = new Span<byte>(writeableBitmap.BackBuffer.ToPointer(), strideInfo.Stride * strideInfo.Height);
    
48. 
    
49.             for (int i = 0; i < strideInfo.Height; i++)
    
50.             {
    
51.                 readSpan.Slice(i * strideInfo.EfficientPerRowBytes, strideInfo.EfficientPerRowBytes)
    
52.                     .CopyTo(writeSpan.Slice(i * strideInfo.Stride, strideInfo.EfficientPerRowBytes));
    
53.             }
    
54.         }
    
55.         writeableBitmap.AddDirtyRect(new Int32Rect(0,0,width,height));
    
56. 
    
57.         return writeableBitmap;
    
58.     }
    
59.     finally
    
60.     {
    
61.         writeableBitmap.Unlock();
    
62.     }
    
63. }
    

复制代码

自己顶一个

感谢分享，学习一下

请问BitmapStrideInfo类是哪个命名空间的？我这里没有这个类

同问三楼内容