Cannot cast ufunc 'multiply' output from dtype('float64') to dtype('uint8') with casting rule 'same_kind'

[tang2087]

When I run this library on Windows 10, it throws out the following error:

Running Stage 4: Blending
Traceback (most recent call last):
File "align_warp_back_multiple_dlib.py", line 428, in
blended = blur_blending_cv2(warped_back, blended, backward_mask)
File "align_warp_back_multiple_dlib.py", line 219, in blur_blending_cv2
mask *= 255.0
numpy.core._exceptions.UFuncTypeError: Cannot cast ufunc 'multiply' output from dtype('float64') to dtype('uint8') with casting rule 'same_kind'
Finish Stage 4 ...

Environment details:

• System: Windows 10
• Python: 3.8 (via Anaconda)
• PyTorch installed with this command: conda install pytorch torchvision torchaudio cudatoolkit=11.3 -c pytorch
• Numpy version:

conda list numpy
# packages in environment at D:\conda\envs\py38:
#
# Name                    Version                   Build  Channel
numpy                     1.21.2           py38hfca59bb_0
numpy-base                1.21.2           py38h0829f74_0

• OpenCV version:

conda list opencv
# packages in environment at D:\conda\envs\py38:
#
# Name                    Version                   Build  Channel
libopencv                 4.0.1                hbb9e17c_0
opencv                    4.0.1            py38h2a7c758_0
opencv-python             4.5.5.62                 pypi_0    pypi
py-opencv                 4.0.1            py38he44ac1e_0

[ruanqizhen]

I got the same error, on Linux.

[ruanqizhen]

requested a fix: #217

[sdahyk]

Edit file "align_warp_back_multiple_dlib.py", line 219, change from
mask *= 255.0 to mask = (mask*255.0)

this will solve the problem.

[stus3y]

Edit file "align_warp_back_multiple_dlib.py", line 219, change from mask = 255.0 to mask = (mask255.0)

this will solve the problem.

It works. Thank you.