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Converting RGB to grayscale/intensity
...eights to channels R, G, and B ought to be applied. These weights are: 0.2989, 0.5870, 0.1140.
8 Answers
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How to close off a Git Branch?
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182
We request that the developer asking for the pull request state that they would like the branch...
git produces Gtk-WARNING: cannot open display
...version would correct the behavior.
And indeed it did. Upgrading to the 1.8 branch of Git resolved the problem. The error message is still displayed for some odd reason, but you are correctly prompted for your password and allowed to continue.
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Python OpenCV2 (cv2) wrapper to get image size?
...dth, channels = img.shape
>>> print height, width, channels
600 800 3
In case you were working with binary images, img will have two dimensions, and therefore you must change the code to: height, width = img.shape
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Explain ExtJS 4 event handling
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answered Aug 31 '11 at 18:43
Molecular ManMolecular Man
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Remove duplicate lines without sorting [duplicate]
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8 Answers
8
Active
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Determine if ActiveRecord Object is New
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288
#new_record? does just that:
object.new_record?
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What is choice_set in this Django app tutorial?
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183
You created a foreign key on Choice which relates each one to a Question.
So, each Choice expl...
Finding child element of parent pure javascript
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edited Oct 31 '18 at 18:19
jmargolisvt
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Django - limiting query results
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answered Jul 4 '11 at 16:48
hamdiakoguzhamdiakoguz
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