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Learn OpenCV : C++ and Python Examples

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I am trying to run: python getDataFromOpenImages_snowman.py to download the data, but I am getting this error. I have both the .csv files in the same folder as getDataFromOpenImages_snowman.py files...

I submitted a PR #516 to fix a bug with the sample code. the code has a bug that will set output of last layer (prior to softmax) to one...

Num classes should not be entries -1 Otherwise last layer does not match input labels and you will get this error ```Epoch: 1/30 /pytorch/aten/src/THCUNN/ClassNLLCriterion.cu:108: cunn_ClassNLLCriterion_updateOutput_kernel: block: [0,0,0], thread: [7,0,0] Assertion...

For OpenCV version greater than 3.0 assigned "estimateAffine2D" function for finding transformation matrix. Initially "estimateRigidTransform" was used which only works in OpenCV-3 or less.

Hi, While trying to run RCNN example I am running into following failure python3 mask_rcnn.py --image=cars.jpg Traceback (most recent call last): File "mask_rcnn.py", line 99, in net = cv.dnn.readNetFromTensorflow(modelWeights, textGraph);...

I use CMake to build HandPose and run it, but every frame captured by it takes nearly two seconds to run. How can I solve this? ![截图](https://user-images.githubusercontent.com/42927066/97963847-bf144580-1df2-11eb-9f53-c8be8bca6d9b.png)

Now along with A,S,D,F we can use Arrow Keys (Left,Right,Down,Up)

New Feature added Instead of just using the A,S,D,W we can also use the arrow keys. Which can be an another option to play game easily. While capturing the key...

Hi ,there is a error that module 'cv2.cv2' has no attribute 'createTonemapDurand'.I want to know how can I save it. Thank you !!!