Free image software for linux

image-viewer is a very simple Kommander script. But written following one of the 2-3 tutorials you can find on the net. Included in tarball you can find this guide to introduce in Kommander GUI. The site is: http://applications.linux.com/article.pl?sid=04/12/17/2033227&tid=49 and was written in 2004 by Michał Kosmulski

I know people want to use this great program..but documentations are very poor...this example helps people who wants to learn something about simple array, combobox, label and connections between signals and slots..very very important.

So, i hope the guide and the example will be usefull.

Image Tree is a complete and versatile photo publishing system in less than 200 lines of code.

ImgTree is based only on three files:

index php : contains all the php and html code. Must be put, unmodified in every folder of the directory tree.
data.php : contains the specific settings of every folder
style.css : the css style sheet

Every folder of the folder tree must contain the three files. Clearly index.php and style.php should be simply linked:

imgtree/
|-- data.php
|-- index.php
|-- style.css
|-- Section-A
| |-- data.php
| |-- index.php -> ../index.php
| |-- style.css -> ../style.css
| |-- 01-thumb.jpg
| |-- 01.jpg
| |-- 02-thumb.jpg
| |-- 02.jpg
| `-- ...
`-- Section-B
|-- data.php
|-- index.php -> ../index.php
|-- style.css -> ../style.css
|-- 00.jpg
|-- Subsection-B1
| |-- data.php
| |-- index.php -> ../index.php
| `-- style.css -> ../style.css
| |-- cover.jpg
`-- Subsection-B2
|-- data.php
|-- index.php -> ../index.php
|-- style.css -> ../style.css
|-- 01-thumb.jpg
|-- 01.jpg
|-- 02-thumb.jpg
|-- 02.jpg
`-- ...

Every folder act as a section and the behaviour can be choose between:

index : Contains a list of links to every subfolder of the current folder. For every section an image and a description are shown.
thumb : Thumbnails page. Shows every image file of the folder. Thumbnail must be named "xxx-thumb.jpg" for the xxx.jpg file. Ex: 01-thumb.jpg -> 01.jpg ; tramonto-thumb.jpg -> tramonto.jpg ; ecc.
cover : Cover page. Shows an image, a text and an associated link

The file data.php contin the settings specific for every section:

$gallerystart : is the gallery start to generate the back-menu. The path must be relative to the starting folder of the site
$name : name used to link the current section in the menus
$title : page title
$description: description, used as subtitle and for brief description in index pages
$indeximage : image used in index pages to link this section
$type : type of the page (cover|thumb|index)
$imgtitle : associtive array of the images descriptions. Used only by "thumb" pages
$coverimage : image used by "cover" pages
$covertext : text used by "cover" pages
$coverlink= : link used by "cover" pages
$covertitle : title used by "cover" pages

NEEDS a web server (Apache or similar) with PHP support

Image::Xpm is a Perl module that can load, create, manipulate and save xpm image files.

SYNOPSIS

use Image::Xpm;

my $j = Image::Xpm->new(-file, Camel.xpm);

my $i = Image::Xpm->new(-width => 10, -height => 16);

my $h = $i->new; # Copy of $i

$i->xy(5, 8, red); # Set a colour (& add to palette if necessary)
print $i->xy(9, 3); # Get a colour

$i->xy(120, 130, #1256DD);
$i->xy(120, 130, $i->rgb2colour(66, 0x4D, 31));

$i->vec(24, #808080); # Set a colour using a vector offset
print $i->vec(24); # Get a colour using a vector offset

print $i->get(-width); # Get and set object attributes
$i->set(-height, 15);

$i->load(test.xpm);
$i->save;

# Changing just the palette
$i->add_colours(qw(red green blue #123456 #C0C0C0));
$i->del_colour(blue);

This class module provides basic load, manipulate and save functionality for the xpm file format. It inherits from Image::Base which provides additional manipulation functionality, e.g. new_from_image(). See the Image::Base pod for information on adding your own functionality to all the Image::Base derived classes.

new()
my $i = Image::Xpm->new(-file => test.xpm);
my $j = Image::Xpm->new(-width => 12, -height => 18);
my $k = $i->new;

We can create a new xpm image by reading in a file, or by creating an image from scratch (all the pixels are white by default), or by copying an image object that we created earlier.

If we set -file then all the other arguments are ignored (since theyre taken from the file). If we dont specify a file, -width and -height are mandatory and -cpp will default to 1 unless specified otherwise.

-file

The name of the file to read when creating the image. May contain a full path. This is also the default name used for loading and saveing, though it can be overridden when you load or save.

-width

The width of the image; taken from the file or set when the object is created; read-only.

-height

The height of the image; taken from the file or set when the object is created; read-only.

-cpp

Characters per pixel. Commonly 1 or 2, default is 1 for images created by the module; read-only.

See the example for how to change an images cpp.

-hotx

The x-coord of the images hotspot; taken from the file or set when the object is created. Set to -1 if there is no hotspot.

-hoty

The y-coord of the images hotspot; taken from the file or set when the object is created. Set to -1 if there is no hotspot.

-ncolours

The number of unique colours in the palette. The image may not be using all of them; read-only.

-cindex

An hash whose keys are colour names, e.g. #123456 or blue and whose values are the palette names, e.g. , #, etc; read-only. If you want to add more colours to the image itself simply write pixels with the new colours using xy; if you want to add more colours to the palette without necessarily using them in the image use add_colours.

-palette

A hash whose keys are the palette names, e.g. , #, etc. and whose values are hashes of colour type x colour name pairs, e.g. c => red, etc; read-only. If you want to add more colours to the image itself simply write pixels with the new colours using xy; if you want to add more colours to the palette without necessarily using them in the image use add_colours.

-pixels

A string of palette names which constitutes the data for the image itself; read-only.

-extname

The name of the extension text if any; commonly XPMEXT; read-only.

-extlines

The lines of text of any extensions; read-only.

-comments

An array (possibly empty) of comment lines that were in a file that was read in; they will be written out although we make no guarantee regarding their placement; read-only.
get()

my $width = $i->get(-width);
my ($hotx, $hoty) = $i->get(-hotx, -hoty);

Get any of the objects attributes. Multiple attributes may be requested in a single call.

See xy and vec to get/set colours of the image itself.

set()
$i->set(-hotx => 120, -hoty => 32);

Set any of the objects attributes. Multiple attributes may be set in a single call; some attributes are read-only.

See xy and vec to get/set colours of the image itself.

xy()
$i->xy(4, 11, #123454); # Set the colour at point 4,11
my $v = $i->xy(9, 17); # Get the colour at point 9,17

Get/set colours using x, y coordinates; coordinates start at 0. If the colour does not exist in the palette it will be added automatically.

When called to set the colour the value returned is characters used for that colour in the palette; when called to get the colour the value returned is the colour name, e.g. blue or #f0f0f0, etc, e.g.

$colour = xy($x, $y); # e.g. #123456
$cc = xy($x, $y, $colour); # e.g. !

We dont normally pick up the return value when setting the colour.

vec()
$i->vec(43, 0); # Unset the bit at offset 43
my $v = $i->vec(87); # Get the bit at offset 87

Get/set bits using vector offsets; offsets start at 0. The offset of a pixel is ((y * width * cpp) + (x * cpp)).

The sort of return value depends on whether we are reading (getting) or writing (setting) the colour - see xy for an explanation.

rgb2colour() and rgb2color()
$i->rgb2colour(0xff, 0x40, 0x80); # Returns #ff4080
Image::Xpm->rgb2colour(10, 20, 30); # Returns #0a141e

Convenience class or object methods which accept three integers and return a colour name string.

load()
$i->load;
$i->load(test.xpm);

Load the image whose name is given, or if none is given load the image whose name is in the -file attribute.

save()
$i->save;
$i->save(test.xpm);

Save the image using the name given, or if none is given save the image using the name in the -file attribute. The image is saved in xpm format.

add_colours() and add_colors()
$i->add_colours(qw(#C0C0DD red blue #123456));

These are for adding colours to the palette; you dont need to use them to set a pixels colour - use xy for that.

Add one or more colour names either as hex strings or as literal colour names. These are always added as type c colours; duplicates are ignored.

NB If you just want to set some pixels in colours that may not be in the palette, simply do so using xy since new colours are added automatically.

del_colour() and del_color()
$i->del_colour(green);

Delete a colour from the palette; returns undef if the colour isnt in the palette, false (0) if the colour is in the palette but also in the image, or true (1) if the colour has been deleted (i.e. it was in the palette but not in use in the image).

GFL::Image is an OO interface to P-e Gougelets Graphic File Library.

SYNOPSIS

use GFL::Image;

my $im = GFL::Image-> new;

$im -> load("test.png");
$im -> set( output => "jpeg",
undolevel => 5
);
$im -> resize (320, 200);
$im -> filter( maximum => 3,
mediancross => 7
);
$im -> undo;
$im -> save("test.jpg");

undef ($im);

This module provides an Object Oriented interface to Pierre-E. Gougelets Graphic File Library.

GFL provides a comprehensive set of image processing tools and can access more than 300 image formats.

GFL is free for non-commercial use, you can grab the latest version at http://www.xnview.org. People wanting to use it in a commercial application must ask authorization to the author.

Image rotator can be used to automatically detect and rotate landscape/portrait photos from digital cameras.
Currently, only outdoor photos are recognized. Image rotator is a command line tool which uses an artifical neural network to detect the orientation of images. Image reading, scaling, and rotation are done with the ImageMagick library.
Enhancements:
- The --verify option can now be used to decrease the number of false decisions.
- This is done by running the image three times (original, rotated left, rotated right) through the neural network.
- A small memory leak was fixed.

Image Cluster copies and renames images based on Exif data and file number names. Image Cluster also clusters those images into directories based on a variable sliding window (with a default of 36 hours), which makes it easy to group images based on events without manual intervention.

The inspiration for this program came from recently getting a new Canon SD500 camera to replace my Canon S30 that Id had for years. The upside, the Canon SD500 rocks! The downside, I now have 2 cameras that are burning through the same sequence numbers, so my previous solution of just putting all the files in to directories by the first 2 digits of the sequence numbers was no longer going to work.

Imagecluster solves this problem, plus another grouping problem that Id been thinking about, by extracting the CreateDate and FileNumber exif tags from the images, and using that as the basis of a new filename (typically YYYY:mm:dd_HH:MM:SS_FileNumber.jpg). This ensures that 2 images taken at the same second have an even smaller chance of colliding, as their camera sequence numbers would have to also be the same at that second.

But that is just the first step. I have noticed that I am an occational photographer, so take pictures in bursts, often for a weekend of hanging out with folks, though sometimes for a vacation as well. This got me thinking. What I really needed is a tool that also creates directories that allows for some minimum tollerance between CreateDate, that is used to cluster images. For me, the optimum value seems to be 36 hours, though this is configurable via the command line.

This took me an afternoon to pull together, Im sure it could be smarter, but it is useful enough to post for others to use.

Options:

-d directory
Set the target directory for images. Defaults to /tmp/photos, which is probably not what you want.

-D
Dryrun. Tells you what the program would have done.

-h
Print out help message

-s
Seperator character. It defaults to : (i.e. 2005:10:09...), but is user configurable because my friend Clemens wants to use - (i.e. 2005-10-09) instead.

-t
Set the tollerance for image clustering. This is the maximum time between any 2 pictures in a cluster, which will cause a new cluster to be created. The name of the cluster will be YYYY:MM:DD of the first image in the cluster, even if it spans multiple days. Because this tollerance is the maximum time between any two images in the cluster, it is possible that all images you have ever taken could be in 1 cluster, if you took a picture every day of your life. Hence, this feature isnt useful to everyone. If you are that kind of person, set tollerance to 16 hours or something, and youll tend to get 1 day sized buckets.

-v
Prints verbose output

Image::PBMlib Perl module contains helper functions for PBM/PGM/PPM image file formats.

SYNOPSIS

use Image::PBMlib;

... open(PPM, "< image.ppm")...

my $ref = readppmheader(*PPM);

my @pixels = readpixels_raw(*PPM, $$ref{type},
($$ref{width} * $$ref{height}) );

my @pixels = readpixels_dec(*PPM, $$ref{type},
($$ref{width} * $$ref{height}) );

my @rgb = hextriplettoraw("F00BA4");

my @rgb = dectriplettoraw("17:34:51");

my $header = makeppmheader($ref);

This is primarily a library for reading portable bitmap (PBM), portable graymap (PGM), and portable pixmap (PPM) files. These image formats are only the barest step up from raw data, and have a very simple format which is the key to be "portable". Writing out images in these formats is very easy.

Reading images in these formats is also easy, but not quite "very easy". Proper reading of the file needs to happen one byte at a time, since there is no fixed header length. Headers can also contain comments, which must be ignored. Then, once past the header, there are a total of six different ways that the data might need to be read: a raw and an ascii encoding of each image color level.

Image Magazine provides a content type which acts both as a folder and as an image.
You populate it with 2 to 4 images, and optionnaly select a layout.
Options include width, background color, padding and margin, and layout mode.
ImageMag then merges the images into a layout while keeping the aspect ratios.
You can then use and call your ImageMag as a standard ploneImage, this mean you can :
.use instance/image_thumbnail, instance/image_large, and so on suffixes to call its different sizes
.call it directly from kupu to illustrate your articles (see readme.txt)
Works with:
- Plone 2.5.2
- Plone 2.5.1
- Plone 2.5