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How can I convert an RGB image into grayscale in Python?
...e.png')
Using matplotlib and the formula
Y' = 0.2989 R + 0.5870 G + 0.1140 B
you could do:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.image as mpimg
def rgb2gray(rgb):
return np.dot(rgb[...,:3], [0.2989, 0.5870, 0.1140])
img = mpimg.imread('image.png')
g...
Join/Where with LINQ and Lambda
...use and understand
– Piotr Kula
Jul 11 '13 at 9:27
1
awesome example
– toy
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must appear in the GROUP BY clause or be used in an aggregate function
...nd of queries.
– ypercubeᵀᴹ
Aug 11 '15 at 19:18
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Best practices for storing postal addresses in a database (RDBMS)?
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I've done this (rigorously model address structures in a database), and I would never do it aga...
Getting the first character of a string with $str[0]
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edited Jul 24 '18 at 11:48
Andy Mercer
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answ...
When to use a View instead of a Table?
... Paul SasikPaul Sasik
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C: differences between char pointer and array [duplicate]
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answered Aug 26 '09 at 16:11
Johannes Schaub - litbJohannes Schaub - litb
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Understanding the basics of Git and GitHub [closed]
... Davoud Taghawi-NejadDavoud Taghawi-Nejad
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When is it appropriate to use C# partial classes?
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JaredParJaredPar
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Convert PHP closing tag into comment
...udh RamanathanAnirudh Ramanathan
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