Getting error - 'could not find a writer'while giving imshow, imwrite command opencv

python opencv imshow
Matt picture Matt · Dec 4, 2014 · Viewed 19.9k times · Source

I am a beginner at opencv and python. I have just installed opencv2.4.9 and enthought canopy-32bit. I am getting error for the following:

import cv2
image = cv2.imread('Lena.jpg')
cv2.imwrite('Mypic',image)

This is what I get:

c:\users\nam\appdata\local\temp\tmpokspbt.py in <module>()
      3 
      4 image = cv2.imread('Lena.jpg')
----> 5 cv2.imwrite('Mypic',image)

error: ..\..\..\..\opencv\modules\highgui\src\loadsave.cpp:275: error: (-2) could not find a writer for the specified extension in function cv::imwrite_

Answer

berak picture berak · Dec 4, 2014

you need to give an extension to imwrite(), so it knows, how to save(compress) it.

cv2.imwrite('Mypic.png',image)
# jpg,bmp,png,ppm,pgm,tiff supported 'out-of-the-box,
# webp,jp2 depending on if you compiled in the resp. 3rd party support
# no gif or tga.

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