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How can I quantify difference between two images?
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General idea
Option 1: Load both images as arrays (scipy.misc.imread) and calculate an element-wise (pixel-by-pixel) difference. Calculate the norm of the difference.
Option 2: Load both images. Calculate some feature vector for each of them (l...
Don't display pushd/popd stack across several bash scripts (quiet pushd/popd)
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136
You could add
pushd () {
command pushd "$@" > /dev/null
}
popd () {
command popd ...
Creating temporary files in bash
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179
The mktemp(1) man page explains it fairly well:
Traditionally, many shell scripts take the...
Pointers in C: when to use the ampersand and the asterisk?
...rst element
To get the second element:
int a[2]; // array
int i = *(a + 1); // the value of the second element
int i2 = a[1]; // the value of the second element
So the [] indexing operator is a special form of the * operator, and it works like this:
a[i] == *(a + i); // these two statements a...
What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time?
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13 Answers
13
Active
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What does f+++++++++ mean in rsync logs?
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201
Let's take a look at how rsync works and better understand the cryptic result lines:
1 - A huge...
How to simulate target=“_blank” in JavaScript
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<script>
window.open('http://www.example.com?ReportID=1', '_blank');
</script>
The second parameter is optional and is the name of the target window.
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@ character before a function call
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212
the "@" will silence any php errors your function could raise.
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Where are ${EXECUTABLE_NAME} and ${PRODUCT_NAME} defined
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181
The PRODUCT_NAME is defined in the target's Build Settings in the Packaging section. It has th...
Why does Maven warn me about encoding?
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18
When you run the goal archetype:create-from-project, Maven generates a POM file for building th...