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How can I quantify difference between two images?
...ifference:
$ python compare.py one.jpg one-blurred.jpg
Manhattan norm: 92605183.67 / per pixel: 13.4210411116
Zero norm: 6900000 / per pixel: 1.0
P.S. Entire compare.py script.
Update: relevant techniques
As the question is about a video sequence, where frames are likely to be almost the same,...
Get a filtered list of files in a directory
...
Keep it simple:
import os
relevant_path = "[path to folder]"
included_extensions = ['jpg','jpeg', 'bmp', 'png', 'gif']
file_names = [fn for fn in os.listdir(relevant_path)
if any(fn.endswith(ext) for ext in included_extensions)]
I prefer this ...
Cloning an Object in Node.js
...')._extend;
var obj1 = {x: 5, y:5};
var obj2 = extend({}, obj1);
obj2.x = 6;
console.log(obj1.x); // still logs 5
Source code of Node's _extend function is in here: https://github.com/joyent/node/blob/master/lib/util.js
exports._extend = function(origin, add) {
// Don't do anything if add isn't ...
How do you calculate the average of a set of circular data? [closed]
...e, A, from a set of angle measurements
a[i] 0<=i
sum_i_from_1_to_N sin(a[i])
a = arctangent ---------------------------
sum_i_from_1_to_N cos(a[i])
The method given by starblue is computationally equivalent, but his reasons are clearer and probably program...
How to “EXPIRE” the “HSET” child key in redis?
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Erik Rothoff
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answered May 14 '13 at 14:14
SuprSupr
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A better similarity ranking algorithm for variable length strings
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answered Mar 17 '09 at 6:15
marzagaomarzagao
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...
In Vim is there a way to delete without putting text in the register?
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edited Aug 1 '11 at 3:06
ib.
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answered Sep 10 ...
What is the best way to trigger onchange event in react js
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For React 16 and React >=15.6
Setter .value= is not working as we wanted because React library overrides input value setter but we can call the function directly on the input as context.
var nativeInputValueSetter = Object.getOwnPr...
Share variables between files in Node.js?
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6 Answers
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Plotting time in Python with Matplotlib
... edited Jan 2 '17 at 13:18
oli5679
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answered Oct 15 '09 at 18:18
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