Feeds:
Posts
Comments

Posts Tagged ‘“GIMP”’

Many people believes that is not possible do a lost of things in Linux based OS’s, I discovered that is totally false, we will see two good examples now.

…………………………………………………………………………………………………………………………………………………

Removing Red Eyes in pictures using GIMP.

I have installed Fedora 9 in my computer and one of the applications included by default is the image editor GIMP (GNU Image Manipulation Program).

GIMP Logo

GIMP is a treasure, it has a lot of very useful functions and work very well,we will use it for remove red eyes in pictures, here the steps:

To open GIMP, go to the menu Applications -> Graphics -> GNU Image Manipulation Program and launch your picture in the same way that you open a file in any software (menu File -> Open…).

Once you have done that, click on rectangle select tool:

RectangleSelectTool

…(or go to the menu Tools -> Selection Tools -> Rectangle Select) and draw a rectangle around the eye area like this: selecting

then go to Filters –> Enhance –> Red Eye Removal. A small screen will appear, use the Threshold scroll bar to adjust the eyes colour… 3

… click Ok when you finish, save your file and it’s done, now you have a very nice picture with no red eyes.
noredeyes

…………………………………………………………………………………………………………………………………………………

Creating a photographic mosaic.

You can create photographic mosaics made of other pictures or images, using a command-line program called Metapixel, which is a “photomosaic generator”.  In my opinion this is very cool stuff (you can impress your friends with this work).

Here the steps…

Installing the program:
Open a windows shell (Applications -> System Tools -> Terminal) and login like root, as follow:
# su –
# (type root password)

then run this command:
# yum install metapixel.

Now for this, you must have a picture that you want to have in mosaics and also a directory with lots of images (if you don’t have any or not enough then you can do what I did, I googled flower images and I copied around 120), the most you have, the best.

After that, you need create one more directory and leave it empty. Let’s call this last directory as “Tiles”.

Now again in the shell terminal:
# metapixel-prepare Directory-with-the-images/ Tiles/
That will index the images and convert them to a .png format, that makes them ready for perform the next command:
# metapixel –metapixel -w 6 -h 6 –library Tiles/ YourPicture.jpg AnyName.png
(The values after the arguments -w and -h indicate the width and heigh of each tile, so you can change these to see what happens)

It will take a bit (time depends how many images you are using for compose your mosaic).

The next line is for display the created image, (if you prefer go by the File Browser, up to you)
# display AnyName.png

At the end you will have something like this:

Image Resulted
(Click in the image to enlarge)

If you have a bigger picture then you may be able to appreciate better every tile that compose the result, you can experiment as much as you want, be creative and have fun…

For more information, visit this link: http://www.complang.tuwien.ac.at/schani/metapixel/

Read Full Post »