Question

我正在使用PointGrey相机，它返回一个类型为

的图像

typedef struct FlyCaptureImage
{
   // Rows, in pixels, of the image.
   int iRows;
   // Columns, in pixels, of the image.
   int iCols;
   // Row increment.  The number of bytes per row.
   int iRowInc;
   // Video mode that this image was captured with.  This member is only
   // populated when the image is returned from a grab call.
   FlyCaptureVideoMode videoMode;
   // Timestamp of this image.
   FlyCaptureTimestamp timeStamp;
   // Pointer to the actual image data.
   unsigned char* pData;
   //
   // If the returned image is Y8, Y16, RAW8 or RAW16, this flag indicates
   // whether it is a greyscale or stippled (bayer tiled) image.  In all
   // other modes, this flag has no meaning.
   //
   bool bStippled;
   // The pixel format of this image.
   FlyCapturePixelFormat pixelFormat;

   // This field is always 1 for single lens cameras.  This field is 
   // used to indicate the number of images contained in the structure 
   // when dealing with multi-imager systems such as the Bumblebee2 
   // or XB3?   int iNumImages;
   int iNumImages;

   // Reserved for future use.
   unsigned long  ulReserved[ 5 ];

} FlyCaptureImage;

虽然我想在OpenCV Mat中处理图像，但是，需要进行转换。我成功地尝试迭代图像中的每个元素进行复制。但它很慢。所以，最好只复制指针。这是我使用Mat初始化的代码，就像：

MatImg = Mat::Mat(FCImg.iRows, FCImg.iCols, CV_8UC3, FCImg.pData);

请给我一些建议。这是正确的做法吗？我将此转换放在与收到返回的Mat图像的主程序不同的类中，例如mycam.getframe（image）

谢谢！

Answer 1

通常，每个像素行在末尾都包含额外的填充像素 bytes 中的完整行大小有多个名称，包括 step ， stepWidth 和 stride 。在struct FlyCaptureImage中，这称为行增量：iRowInc。

因此，在您的情况下，您应该指定步幅：

cv::Mat pgImg(FCImg.iRows, FCImg.iCols, CV_8UC3, FCImg.pData, FCImg.iRowInc);

FlyCaptureImage和OpenCV Mat之间的数据转换

1 个答案: