Python OpenCV convert image to byte string

Question

image = camera.read()
image = cv2.cvtColor(image, cv2.COLOR_RGB2GRAY)

When I'm starting a program - got this:

Traceback:
    File "file", line 55, in <module>
        image = cv2.cvtColor(image, cv2.COLOR_RGB2GRAY)
TypeError: src is not a numerical tuple

How can I fix it?

you need to add more information about your image imageand the rest of your code ... — Samer
– Samer, Commented Oct 12, 2014 at 23:27

user1269942 · Accepted Answer · 2014-10-12 23:36:44Z

2

I think camera.read() returns a tuple, the first element being a bool and the next element is the frame itself.

so try this:

ret, image = camera.read()
image = cv2.cvtColor(image, cv2.COLOR_RGB2GRAY)

answered Oct 12, 2014 at 23:36

user1269942

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1 Comment

Community · Accepted Answer · 2020-06-20 09:12:55Z

0

Check the documentation of cvtColor , probably your structure is wrong, check the structure of your image

Parameters:

src – input image: 8-bit unsigned, 16-bit unsigned ( CV_16UC... ), or single-precision floating-point.

CommunityBot

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answered Oct 12, 2014 at 23:35

Samer

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