Faster RGB to Grey conversion Python. [closed]

asked 2016-03-26 11:48:06 -0600

Shahrukh Q gravatar image

I am using "cv2.cvtColor(rgb_image, cv2.COLOR_BGR2GRAY)" to convert grey it is taking 0.801 seconds to convert. I am developing a real-time application where I convert RGB image to grey and perform operation but it is slow. Is there any faster way to convert.

Thanks.

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Closed for the following reason the question is answered, right answer was accepted by sturkmen
close date 2020-10-04 02:50:27.718576

Comments

1
  • please show us, how you measure that
  • no, there is no faster alternative. on what machine is that running on ?
  • did you compile your own cv2.pyd ? did you enableble any optimizations (tbb/icp/ocl) ?
berak gravatar imageberak ( 2016-03-26 12:03:15 -0600 )edit

I just print time before and after this function. I am using windows, intel i5 processor. I did not enabled any optimization. And I did not complie. @berak

Shahrukh Q gravatar imageShahrukh Q ( 2016-03-26 12:10:22 -0600 )edit

How big is your image?

FooBar gravatar imageFooBar ( 2016-03-26 14:33:42 -0600 )edit

@FooBar 720X576

Shahrukh Q gravatar imageShahrukh Q ( 2016-03-26 14:36:30 -0600 )edit

And which hardware are you using? How does you code look like?

FooBar gravatar imageFooBar ( 2016-03-27 12:34:30 -0600 )edit

@FooBar Lenove thinkpad.

image = cv2.imread(path)

start_time = datetime.now()

grey = cv2.cvtcolor(image, cv2.COLORBRG2GREY)

end_time = date time.now() print((end_time-star t_time).total_seconds())

Shahrukh Q gravatar imageShahrukh Q ( 2016-03-27 15:39:12 -0600 )edit
1

^^ 12 typos in 5 lines, yikes !

berak gravatar imageberak ( 2016-03-28 02:02:23 -0600 )edit
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