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Checking images for similarity with OpenCV
Does OpenCV support the comparison of two images, returning some value (maybe a percentage) that indicates how similar these images are? E.g. 100% would be returned if the same image was passed twice, 0% would be returned if the images were totally different.
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Numpy first occurrence of value greater than existing value
...]: aa = np.arange(-N,N)
In [4]: timeit np.argmax(aa>N/2)
100000 loops, best of 3: 52.3 us per loop
In [5]: timeit np.where(aa>N/2)[0][0]
10000 loops, best of 3: 141 us per loop
In [6]: timeit np.nonzero(aa>N/2)[0][0]
10000 loops, best of 3: 142 us per loop
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__lt__ instead of __cmp__
...n operators" such as __lt__ . The rich comparison overloads are said to be preferred, but why is this so?
5 Answers
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How to split a string with any whitespace chars as delimiters
... pass to java.lang.String.split() to split a String into an Array of substrings using all whitespace characters ( ' ' , '\t' , '\n' , etc.) as delimiters?
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Task not serializable: java.io.NotSerializableException when calling function outside closure only o
Getting strange behavior when calling function outside of a closure:
9 Answers
9
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node.js global variables?
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You can use global like so:
global._ = require('underscore')
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Android ViewPager - Show preview of page on left and right
...droid's ViewPager . What I want to do is to show a preview of the page on both the left and the right. I've seen where I can use a negative pageMargin to show a preview of the right side.
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Why is sed not recognizing \t as a tab?
I am expecting this sed script to insert a tab in front of every line in $filename however it is not. For some reason it is inserting a t instead.
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Simple Vim commands you wish you'd known earlier [closed]
I'm learning new commands in Vim all the time, but I'm sure everyone learns something new once in a while. I just recently learned about this:
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How to loop through array in jQuery?
...ere lays out the non-jQuery options much more thoroughly. The third option below, jQuery.each, isn't in it though.)
Four options:
Generic loop:
var i;
for (i = 0; i < substr.length; ++i) {
// do something with `substr[i]`
}
or in ES2015+:
for (let i = 0; i < substr.length; ++i) {
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