Super-resolution algorithm in Python

Abstract Super-resolution algorithms is a family of algorithms used to obtain higher resolution image from set of images in lower resolutions. It's important to notice that by using those methods the higher resolution image is more detailed in opposition...

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Renewable source of electricity from an old step motor

Recently I saw in old electronic magazine reprint of a project, where step motor was used as a source of power for LED torch. It's an interesting idea of using renewable and simple source of energy. Today I will present my own construction. It can be...

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Constructing a homemade speaker

It's a simple speaker that can be built at home from inexpensive and freely available materials: magnet, cardboard and tape, isolated wire from signal transformer and mini-jack cable from broken headphones. ...

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8 Best Programming Songs

Code monkey Written by Jonathan Coulton, link to the lyric. I love this song, maybe because I'v worked a lot of time in different corporations :) Kill dash nine! There's a guitar player in the clip even when there isn't guitar part in the song :) ...

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HOWTO avoid mistakes in conditional instructions

In C or C++ it's easy to made mistake in expression of conditional instruction and use assignment instead of comparison. It's presented in below snippet, where we want to check if x is equal to 6: int main(){ int x; /* first case */ /* OK */ if(x==6){ /* sth */ } /*...

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Protecting images against saving

If you share on the Internet your images, then you may want to protect them against saving. There're a lot of ways to do it - watermarks, cutting images into multiple smaller pieces and reassembling them by using CSS, tricks with CSS or JavaScript and others. None of them is accurate against experienced...

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Making captcha easier to break

Almost all sites use images with text that user has to retype to prove that he's a human not spambots. A lot of those images (called captcha) contains small lines, dots and other noises to make theirs analyze more difficult for spambots. In this post...

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Less popular way to copy content of a structure

There is instance (let's call it p0) of structure, we create new instance (p1) of the same structure and want to copy content of fields from p0 to p1. The simplest (IMHO also the best) way is to copy field by field. It's presented in following code (in case of p1 all fields are copied, in case of p2...

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