如何使用 Pleora eBUS SDK c# 或 python 从 Photon Focus 相机获取 "pixel" 数据值？

Question

我有一台 3D Photon Focus 相机 (MV1-D2048x1088-3D06-760-G2-8)，我在 Windows 10 机器上使用 C# 和 Pleora eBUS SDK 版本 5.1.1。相机设置为在 LineFinder 模式下扫描激光线，DataFormat3D = 2 并返回数据（缓冲区有效负载 = 2 x 2048 = 4096 字节）。有效载荷似乎是正确的。我想保存这些数据，但我遇到了困难。如何将缓冲区放入数组（或某种结构）中以将其保存到文件流中？我的代码使用的是来自 Pleora eBUS SDK 的 .DataPointer 参数，但我不明白它在做什么。我在此处包含的手册 - MAN075_PhotonFocus

private unsafe static void ThreadProc(object aParameters)
    {
        object[] lParameters = (object[])aParameters;
        MainForm lThis = (MainForm)lParameters[0];

        for (;;)
        {
            if (lThis.mIsStopping)
            {
                // Signaled to terminate thread, return.
                return;
            }

            PvBuffer lBuffer = null;
            PvResult lOperationResult = new PvResult(PvResultCode.OK);                
            // Retrieve next buffer from acquisition pipeline
            PvResult lResult = lThis.mStream.RetrieveBuffer(ref lBuffer, ref lOperationResult, 100);
            if (lResult.IsOK)
            {
                // Operation result of buffer is OK, display.
                if (lOperationResult.IsOK)
                {
                    //lThis.displayControl.Display(lBuffer);
                    uint bSize = lBuffer.GetPayloadSize();
                    PvImage image1 = lBuffer.Image;
                    uint height1 = image1.Height;
                    uint width1 = image1.Width;
                    uint offx1 = image1.OffsetX;
                    uint offy1 = image1.OffsetY;                        
                    PvPixelType imgpixtype = image1.PixelType;                                               
                    image1.Alloc(width1, (uint)2, imgpixtype);
                    byte *data_pnt = image1.DataPointer ;
                    byte[] MSB_array = new byte[(int)width1];
                    int buff_size = 2 * (int)width1;
                    byte[] pix_array = new byte[buff_size];                       
                    
                    ulong tStamp = lBuffer.Timestamp;
                    string msgOut = (bSize.ToString() + " TimeStamp " + tStamp.ToString() + " width " + width1.ToString());
                    Console.WriteLine(msgOut);
                    for (int i = 0; i < width1; i++)
                    {
                        data_pnt += 0;
                        Console.Write((uint)*data_pnt);
                        MSB_array[i] = *data_pnt;
                        data_pnt += 1;
                    }
                    data_pnt += 1;
                    Console.WriteLine(height1.ToString());
                    for (int i = 0; i < width1; i++)
                    {
                        ushort msb1 = MSB_array[i];
                        ushort last_4 = (ushort)(*data_pnt & 0x0F);
                        int integer1 = (msb1 << 4)+(ushort)(*data_pnt>>4);
                        double dec_part = (float)last_4 / (float)16;
                        double val1 = (float)integer1 + dec_part;
                        Console.WriteLine(val1.ToString());
                        data_pnt += 1;
                    }
                    Console.WriteLine(height1.ToString());
                }
                else
                {
                    uint bSize = lBuffer.GetPayloadSize();
                    ulong tStamp = lBuffer.Timestamp;
                    string msgOut = (bSize.ToString() + " BAD RESULT TimeStamp " + tStamp.ToString());
                    Console.WriteLine(msgOut);
                }

                // We have an image - do some processing (...) and VERY IMPORTANT,
                // re-queue the buffer in the stream object.
                lThis.mStream.QueueBuffer(lBuffer);
            }
        }
    }

Answer 1

我当前的解决方案是通过递增指针循环遍历缓冲区并将字节保存到新数组中 (MSB_array)。这些数据的打包方式（参见问题中的附图）我不得不读取下一行并将其移位并将其添加到 MSB_array 中的字节以获得

    for (int i = 0; i < width1; i++)
        {
            data_pnt += 0;
            Console.Write((uint)*data_pnt);
            MSB_array[i] = *data_pnt;
            data_pnt += 1;
        }
        data_pnt += 1;
        Console.WriteLine(height1.ToString());
        for (int i = 0; i < width1; i++)
        {
            ushort msb1 = MSB_array[i];
            ushort last_4 = (ushort)(*data_pnt & 0x0F);
            int integer1 = (msb1 << 4)+(ushort)(*data_pnt>>4);
            double dec_part = (float)last_4 / (float)16;
            double val1 = (float)integer1 + dec_part;
            Console.WriteLine(val1.ToString());
            data_pnt += 1;
        }

我现在只是将它写到控制台，但数据是正确的。与使用指针的for循环相比，可能有better/faster种方式。 post 将不胜感激。

如何使用 Pleora eBUS SDK c# 或 python 从 Photon Focus 相机获取 "pixel" 数据值？

How to get the "pixel" data values from a Photon Focus camera using the Pleora eBUS SDK c# or python?

c#

3d

scanning

gige-sdk

pleora-sdk