参数dstCn原来一直沿用CV_BGR2GRAY, CV_RGB2GRAY, CV_GRAY2BGR, CV_GRAY2RGB等格式,但最新几个版本的OpenCV已改为COLOR_BGR2GRAY类似形式,今天才看源代码imgproc.hpp才发现,但官方文档还没修改,如下图,如果程序中使用较新的版本OpenCV,采用CV_BGR2GRAY可能会一直出错。 新的OpenCV中imgproc.hpp的定义如下: en...
cv::Mat yuvImg; yuvImg.create(h*3/2, w, CV_8UC1); memcpy(yuvImg.data, pYuvBuf, bufLen*sizeof(unsignedchar)); cv::Mat rgbImg; cv::cvtColor(yuvImg, rgbImg, CV_YUV2BGR_I420); cv::imshow("img", yuvImg); cv::waitKey(1); printf("%d \n", iCount++); }delete[] pYuvBuf...
CvInvoke.CvtColor(uMat, dst, ColorConversion.Bgr2YuvI420); byte[] data=dst.Bytes; data:I420格式数据 Mat为emgu的图形类 Bitmap转Mat的话 Bitmap bmp = new Bitmap(width, height, PixelFormat.Format32bppPArgb); BitmapData bmpData = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLock...
size_t plane2_stride = CVPixelBufferGetBytesPerRowOfPlane (cvpixelBufferRef, 1); //yuv_size(内存空间) size_t frame_size = pixelWidth*pixelHeight*3/2; //开辟frame_size大小的内存空间用于存放转换好的i420数据 uint8* buffer = (unsigned char *)malloc(frame_size); //buffer为这段内存的首地址,...
NVCV_COLOR_BGR2YUV_I420 NVCV_COLOR_YUV2RGBA_I420 NVCV_COLOR_RGBA2YUV_I420 NVCV_COLOR_YUV2BGRA_I420 NVCV_COLOR_BGRA2YUV_I420 NVCV_COLOR_RGB2YUV_I420 NVCV_COLOR_YUV2RGB_YV12 NVCV_COLOR_RGB2YUV_YV12 NVCV_COLOR_YUV2BGR_YV12 NVCV_COLOR_BGR2YUV_YV12 NVCV_COLOR_YUV2RGBA_YV12 NV...
(cvpixelBufferRef, 0);//uv stridesize_t plane2_stride = CVPixelBufferGetBytesPerRowOfPlane (cvpixelBufferRef, 1);//yuv_size(内存空间)size_t frame_size = pixelWidth*pixelHeight*3/2;//开辟frame_size大小的内存空间用于存放转换好的i420数据uint8* buffer = (unsigned char *)malloc(frame_size)...
planes[2][15//2,21//2]) x = yuv.tensor rgb = cv.cvtColor(x, cv.COLOR_YUV2RGB_I420) print(rgb[0,0]) yuv2 = cv.cvtColor(rgb, cv.COLOR_RGB2YUV_I420) print(yuv2) #yuv = AlgoImage.open("inputs/dev/img_0_yuv420.npy").img # #print(yuv.planes[0][15,21]) #print(yuv....
如果您使用OpenCV已有一段时间，那么您应该已经注意到，在大多数情况下，OpenCV都使用CPU，这并不总能...
cv::gapi::imgproc::G_TYPED_KERNEL(GYUV2RGB, <GMat(GMat)>, "org.opencv.imgproc.colorconvert.yuv2rgb" ) G_TYPED_KERNEL() [34/53] cv::gapi::imgproc::G_TYPED_KERNEL(GBGR2I420, <GMat(GMat)>, "org.opencv.imgproc.colorconvert.bgr2i420" ...
在采集到RGB24数据后,需要对这个格式的数据进行第一次压缩。即将图像的颜色空间由RGB2YUV。因为,X264在进行编码的时候需要标准的YUV(4:2:0)。但是这里需要注意的是,虽然YV12也是(4:2:0),但是YV12和I420的却是不同的,在存储空间上面有些区别。如下: ...