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OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
... // try several threshold levels
const int threshold_level = 2;
for (int l = 0; l < threshold_level; l++)
{
// Use Canny instead of zero threshold level!
// Canny helps to catch squares with gradient shading
if (l == 0)
...
Telling gcc directly to link a library statically
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How to find keys of a hash?
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275
There is function in modern JavaScript (ECMAScript 5) called Object.keys performing this opera...
Read input from console in Ruby?
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230
Are you talking about gets?
puts "Enter A"
a = gets.chomp
puts "Enter B"
b = gets.chomp
c = a...
RSpec controller testing - blank response.body
... mislavmislav
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2
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PostgreSQL disable more output
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251
To disable pagination but retain the output, use:
\pset pager off
To remember this setting,...
What is two way binding?
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255
Two-way binding just means that:
When properties in the model get updated, so does the UI.
Wh...
How do I do an OR filter in a Django query?
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edited Mar 2 at 17:15
phoenix
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answ...
Array Size (Length) in C#
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152
If it's a one-dimensional array a,
a.Length
will give the number of elements of a.
If b is a...
How do I tar a directory of files and folders without including the directory itself?
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238
cd my_directory/ && tar -zcvf ../my_dir.tgz . && cd -
should do the job in ...