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Extracting text OpenCV
...v::rectangle(img1,letterBBoxes1[i],cv::Scalar(0,255,0),3,8,0);
cv::imwrite( "imgOut1.jpg", img1);
for(int i=0; i< letterBBoxes2.size(); i++)
cv::rectangle(img2,letterBBoxes2[i],cv::Scalar(0,255,0),3,8,0);
cv::imwrite( "imgOut2.jpg", img2);
return 0;
}
Results:
a. el...
How to exit in Node.js
What is the command that is used to exit? (i.e terminate the Node.js process)
19 Answers
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How do I find out which keystore was used to sign an app?
...:E7:E3:0C:AA:7A:0D:F2:0D:05:20:12:A8:85:0B:32:C5:4F:68
Signature algorithm name: SHA1withRSA
Then use the keytool again to print out all the aliases of your signing keystore:
keytool -list -keystore my-signing-key.keystore
You will get a list of aliases and their certificate fingerprint:
...
Rails raw SQL example
...array would then be the result of your sql query in an array which you can iterate through.
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Is it expensive to use try-catch blocks even if an exception is never thrown?
We know that it is expensive to catch exceptions. But, is it also expensive to use a try-catch block in Java even if an exception is never thrown?
...
Python matplotlib multiple bars
... the highest value red can be seen only.
How can I plot the multiple bars with dates on the x-axes?
5 Answers
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How to search for a part of a word with ElasticSearch
I've recently started using ElasticSearch and I can't seem to make it search for a part of a word.
10 Answers
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Weak and strong property setter attributes in Objective-C
...
You either have ARC on or off for a particular file. If its on you cannot use retain release autorelease etc... Instead you use strong weak for properties or __strong
__weak
for variables (defaults to __strong). Strong is the ...
Only read selected columns
...21 -27 -2 -6 -10 -32 -13 -12 -27 -30 -38 -29
and was created by using
write.table(dat, file = "data.txt", row.names = FALSE)
where dat is
dat <- structure(list(Year = 2009:2011, Jan = c(-41L, -41L, -21L), Feb = c(-27L,
-27L, -27L), Mar = c(-25L, -25L, -2L), Apr = c(-31L, -31L, -6L
), May =...
What does “program to interfaces, not implementations” mean?
...be done. This can be used to change the behavior of a program at run-time. It also helps you to write far better programs from the maintenance point of view.
Here's a basic example for you.
public enum Language
{
English, German, Spanish
}
public class SpeakerFactory
{
public static ISpea...