ImageMagick 从内存数据创建 Image

ImageMagick接口有

Image::read(const string& filename);

以及

Blob my_blob; // create a blobImage my_image("my_image.gif"); // create an image form a GIF image filemy_image.magick("JPEG"); // set JPEG output formatmy_image.write(&my_blob); // encode 'my_image' in JPEG format,// and store the encoded image in my_blobImage image_from_blob(my_blob); // create an image from the JPEG blob// (use the Blob-based Image constructor)image_from_blob.magick("BMP"); // set the image format to bitmapimage_from_blob.write("image_from_blob.bmp"); // save the image on disk in BMP format

但是如果有内存数据 byte[] 存储 如 RGB，则无法通过上述接口进行转换，

以OPencv为例，

opencv TO image

Image Ipl2Magick(IplImage* iplImage){   Image mgk(iplImage->width, iplImage->height, "BGR", CharPixel, (char *)iplImage->imageData);   return mgk;}

image TO opencv

void Magick2Ipl(Image magicImage, IplImage* cvImage){   int width= magicImage.size().width();   int height = magicImage.size().height();   byte* blob= new byte[cvImage->imageSize];   magicImage.write(0,0, width, height, "BGRA", MagickCore::CharPixel, blob);   memcpy(cvImage->imageData, blob, cvImage->imageSize);   delete [] blob;}

切记，4通道～

IplImage* cvimg =  cvCreateImage(cvSize(...,...), IPL_DEPTH_8U, 4);

REFERENCE