How to use opencv with cuda support python?

Question

I found example of cuda accelerated opencv python code in official opencv github repository. test_cuda.py

cuMat1 = cv.cuda_GpuMat()
cuMat2 = cv.cuda_GpuMat()
cuMat1.upload(npMat1)
cuMat2.upload(npMat2)

cuMat1 = cv.cuda.cvtColor(cuMat1, cv.COLOR_RGB2GRAY)
cuMat2 = cv.cuda.cvtColor(cuMat2, cv.COLOR_RGB2GRAY)

But I found that module 'cv2.cuda' has no attribute 'cvtColor'.

My opencv build information:

NVIDIA CUDA:                   YES (ver 10.0, CUFFT CUBLAS FAST_MATH)
NVIDIA GPU arch:             61
NVIDIA PTX archs:            61

Full build information

How to fix it?

https://pastebin.com/U7v12Vhm – Данил Вагапов Apr 12 '19 at 06:49 — Данил Вагапов, Apr 12 '19 at 06:49
Which version you built, please? – Redhwan Jul 07 '20 at 06:30 — Redhwan, Jul 07 '20 at 06:30

score -2 · Answer 1 · edited Jul 12 '19 at 03:05

-2

You should change like this.

cuMat1 = cv.cuda_GpuMat()
cuMat2 = cv.cuda_GpuMat()

npMat1_n = cv.cvtColor(npMat1, cv.COLOR_RGB2GRAY)
npMat2_n = cv.cvtColor(npMat2, cv.COLOR_RGB2GRAY)

cuMat1.upload(npMat1_n)
cuMat2.upload(npMat2_n)

edited Jul 12 '19 at 03:05

Arne

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answered Jul 12 '19 at 02:16

Daeyoung Shin

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This performs cvtColor on the CPU, not on the GPU. – isarandi Oct 19 '20 at 11:20

How to use opencv with cuda support python?

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