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2018-04-03 08:18:37 -0600 commented question OpenCV 3.2 includes libmirprotobuf and protobuf 2.6 which is conflicting with protobuf 3.1

Same problem! Help!

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2016-11-11 19:13:11 -0600 commented answer cv::cuda::meanStdDev for CV_32FC1

Wait, line 142 asserts matrix type should be CV_8UC1. And nppiMeanStdDev8uC1RGetBufferHostSize or nppiMeanStdDevGetBufferHostSize_8u_C1R, don't really know what they do, but they both seem to be specific to the CV_8UC1 type.

2016-11-10 13:12:55 -0600 asked a question cv::cuda::meanStdDev for CV_32FC1

Hello everyone!

I was wondering whether cv::cuda::meanStdDev function will be implemented for the CV_32FC1 type in the near future or if it's not in the priority list at all.

I know I can download the image and use the host function (that's exactly my workaround now) but this is very slow and involves a download operation. I'm barely achieiving real-time.

Thanks a lot.

2016-11-08 19:03:59 -0600 asked a question Index GpuMat channels without copying

Hello everybody!

I am currently using OpenCV-3.1 and I was wondering whether there was a way of indexing a cv::cuda::GpuMat channels without calling cv::cuda::split.

I don't need to write to these channels, I just need to perform arithmetic operations with each channel separately and save them somewhere else (i.e., cv::cuda::divide(gpu_red, gpu_blue, gpu_rdb) ).

I don't want to use split because it copies matrices and it's very computationally expensive (it is currently, by far, my app's bottleneck).

Any ideas would be appreciated. Thanks!