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Simple and fast method to compare images for similarity
... contribute an img_hash module to opencv_contrib, you can find the details from this link.
img_hash module provide six image hash algorithms, quite easy to use.
Codes example
origin lena
blur lena
resize lena
shift lena
#include <opencv2/core.hpp>
#include <opencv2/core/ocl.hpp>
...
Different ways of adding to Dictionary
...yDietFavorites[1] = "Salad";
But don't forget you're the programmer, and from now on you finishes your sentences with ; you refuse to use emojis because they would throw compilation error and all list of favorites is 0 index based.
Your diet changed too! So you alter your list again:
/*you don't...
How large should my recv buffer be when calling recv in the socket library
...looping around if you don't have a complete message and stuffing the bytes from the next recv into the buffer following the partial message. You shouldn't use strstr() on the raw buffer filled by recv() - there's no guarantee that it contains a nul-terminator, so it might cause strstr() to crash.
...
Multiple levels of 'collection.defaultdict' in Python
...
Use:
from collections import defaultdict
d = defaultdict(lambda: defaultdict(int))
This will create a new defaultdict(int) whenever a new key is accessed in d.
...
CS0120: An object reference is required for the nonstatic field, method, or property 'foo'
...ng a non static member (a property or method, specifically setTextboxText) from a static method (specifically SumData). You will need to either:
Make the called member static also:
static void setTextboxText(int result)
{
// Write static logic for setTextboxText.
// This may require a ...
C++0x has no semaphores? How to synchronize threads?
...
You can easily build one from a mutex and a condition variable:
#include <mutex>
#include <condition_variable>
class semaphore
{
private:
std::mutex mutex_;
std::condition_variable condition_;
unsigned long count_ = 0; // In...
What do people find difficult about C pointers? [closed]
From the number of questions posted here, it's clear that people have some pretty fundemental issues when getting their heads around pointers and pointer arithmetic.
...
Loop through an array of strings in Bash?
...VS variables or files in to a list. Changing the internal field separator from a space, to what ever you want. In the example below it is changed to a comma
List="Item 1,Item 2,Item 3"
Backup_of_internal_field_separator=$IFS
IFS=,
for item in $List;
do
echo $item
done
IFS=$Backup_of_int...
What is the logic behind the “using” keyword in C++?
...lement, too confusing, or would contradict old code.
Here is an old paper from 2003 n1449. The rationale seems to be related to templates. Warning: there may be typos due to copying over from PDF.
First let’s consider a toy example:
template <typename T>
class MyAlloc {/*...*/};
template ...
Position icons into circle
...ern solution I use these days.
I start off by generating the HTML starting from an array of images. Whether the HTML is generated using PHP, JS, some HTML preprocessor, whatever... this matters less as the basic idea behind is the same.
Here's the Pug code that would do this:
//- start with an array...