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Tutorial: simulate depth of field

In short tutorial for Gimp today we see how to simulate the depth of field in a photo. Often with modern compact digital cameras automatic settings focus is the subject that background, making everything clearly visible. This can result in a decrease of the charm of the picture. Today's tutorial shows how blurry the parts that make "the environment".

We begin to open up a nice picture (eye licensing) I'll take from the usual Flickr account. Now I use a landscape, but it can also work with individuals, the important thing is that there is the "outline".


HDR e ToneMapping

Real HDR effect

Often (and in a completely anarchic) is confusing, species su Flickr and similar platforms, theHDR with the Tone Mapping. Start now by saying that the HDR (High Dinamic Range) is a technique used in photography that allows to have a uniform illumination of subjects and settings that would normally be darker or lighter. The example below is a very good explanation.

In this short article we analyze the practical differences between a vero HDR and an effect "Tone Mapping".

And since we're talking about practice, to begin to get a HDR will be needed various photographs of a single entity in formato RAW, or in a more modest size (JPG) setting a different exposure on the camera.


Mount the remote FTP locally with “curlftpfs”

Today is a little advice to use the 'FTP in a very simple way. Curlftps usually is not automatically installed in major distributions, although this can be easily found in repository. As always, the installation instructions are the usual: "yum -y install curlftpfs" to Red Hat, and "apt-get install curlftpfs" to Debian. Furthermore curlftpfs is a program command line, to my knowledge has not been created yet gui, despite this, the operation is simple and I will not go into explanations:


Tutorial: tool “Clones” the GIMP

Now let's see how the tool works "Clones" Gimp. Often we will ever need remove the elements from a photo taken which disturb the fluidity. This thinking an ad light pole, a bush, a chewed gum e appiccicata sul muro. Requirements can be many, but for this tutorial I thought I would show its use for remove objects from the background. The instrument "Clones" does nothing but copy a portion existing in the picture (usually a reason fairly uniform) and cover areas that we do not want in the picture.


Tutorial: da bitmap a SVG con Inkscape

Together with Gimp by image manipulation, e a Scribus for desktop publishing I happen sometimes to adopt the use of Inkscape. Inkscape is a vector graphics editor, a program for the picture "screen". It can be used in various fields, there are those who used to draw company logos, or even for the illustrations of some books. Personally, I have many skills in this area, and I find that even a pencil and paper in many cases are the most expeditious (of course, from my point of view). More than anything else I Inkscape is useful for vectorization of raster images, I know that Inkscape provides several other functions and is a little 'reductive use it exclusively for this, but for now I have no other duties for him to perform.

Open Inkscape and import an image jpg:


Tutorial: Text in a circle with Scribus

In today's article we are talking about a very useful technique for "adjust" the text at a geometry. The same results can be obtained with Gimp, the difference is that Scribus does not create a raster image, but (being a publishing software) left untouched by the letters, changing only size and orientation with precise mathematical instructions. When you need to enlarge a portion of the PDF created with Scribus there will be no loss of quality.

Filed under: Graphics Continue reading

Busybox, (almost) throughout the shell of GNU / Linux on mobile devices

Today we talk about BusyBox, a program specially written for "carry" the shell on devices Linux embedded. Among the devices that we can meet with GNU / Linux built-in flash memory are the famous TomTom, some phones (Motorola made a trailblazer), and for example, many models of decoder for digital terrestrial.

Directly from the site:


Create a “badge” Flickr

Public now the translation of a very interesting article found a few days ago on how to create custom styles per le custom gallery di Flickr.

As many will know, Flickr is a social network to lovers of photography. People enrolled, upload photo, commented on foto and other gets feedback other to their photos. One of the great things about Flickr is the ability to specify licenses for your photos, but in this article we'll take care of '"export" images from a Flickr account on an external site.


Shell: some command to start

The "shell" di GNU/Linux (the terminale) is a very important part of any system GNU/Linux, and although it has been largely "bypassed" by the various GUI, remains the most direct way "communicate" with the machine without many intermediaries.

This article aims to show the most common commands (the most widely used) to the command line: