Gimmage is a simple image viewer that aims to have a minimalist
interface and tries to be keyboard operable for browsing through a
large number of images quickly. It is appropriate for command line
usage as it accepts directories and image filenames as arguments. It
has an in-application file browser that allows users to select and
drag images and directories into the image viewing area in order to
have them displayed.
ggplot2 is a plotting system for R, based on the grammar of graphics,
which tries to take the good parts of base and lattice graphics and
none of the bad parts. It takes care of many of the fiddly details
that make plotting a hassle (like drawing legends) as well as
providing a powerful model of graphics that makes it easy to produce
complex multi-layered graphics.
AA-lib is a low-level graphics library similar to many other libraries
except for the fact that AA-lib does not require a graphics device! In
fact, no "graphical" output is possible. AA-lib uses a modern, high-tech
ascii-art renderer in place of outmoded and cumbersome graphical output.
The AA-lib API is designed to be similar to that of other graphics
libraries so learning its API should be simple.
Mahotas is a computer vision and image processing library for Python. It
includes many algorithms implemented in C++ for speed while operating in
numpy arrays and with a very clean Python interface.
Notable algorithms:
- Watershed
- Convex points calculations
- Hit & miss thinning
- Zernike & Haralick, LBP, and TAS features
- Freeimage-based numpy image loading
- Speeded-Up Robust Features (SURF), a form of local features
- Thresholding
- Convolution
- Sobel edge detection
This is a Perl implementation of the reCAPTCHA API.
From the recaptcha.net web site:
reCAPTCHA improves the process of digitizing books by sending words that
cannot be read by computers to the Web in the form of CAPTCHAs for
humans to decipher. More specifically, each word that cannot be read
correctly by OCR is placed on an image and used as a CAPTCHA. This is
possible because most OCR programs alert you when a word cannot be read
correctly.
This module provides conversions between commonly used ways to express
colors. It provides conversions between color spaces such as RGB and
HSV, and it provides ways to look up colors by a name.
This class provides a base for subclasses which represent particular
color values in particular spaces. The base class provides methods to
represent the color in a few convenient forms, though subclasses may
provide more specific details for the space in question.
Perl helper class for implementing the Google Chart Tools Datasource Protocol.
The Google Visualization API is a nifty bit of kit for generating pretty
pictures from your data. By design it has a fair amount of Google-cruft, such
as non-standard JSON and stuffing configuration options in to a single CGI
query parameter.
Data::Google::Visualization::DataTable takes care of preparing data for the
API.
'pgperl' is a version of the Perl language which has available
the PGPLOT FORTRAN library, a very popular package for plotting
astronomical data. (As a glance through any issue of ApJ or MNRAS will
confirm.) The details of this involve some complicated C glue routines
but are transparent to the user.
See the file LICENSE in /usr/local/share/doc/pgperl for copyright/licensing
information and the file pgperl.doc on how to use pgplot from perl.
The PNGwriter library, which requires libpng, allows you to plot to a 48-bit
PNG file, saving it directly to disk. Plotting is as easy as specifying the
red, green, and blue values and the x, y coordinates of the pixel. It includes
functions for plotting simple geometric shapes (circle, rect, line), reading
the colour of a pixel, reading in a whole PNG file (great for image analysis),
plotting and reading in HSV colourspace, and many others that might come in
handy.
pyexiv2 is a python binding to exiv2, the C++ library for manipulation of
EXIF and IPTC image metadata. It is a python module that allows your python
scripts to read and write metadata (EXIF, IPTC, thumbnail) embedded in image
files (JPEG, TIFF, ...).
It is designed as a high level interface to the functionalities offered by
exiv2 (and is built on top of it). Using python's built-in data types and
standard modules, it provides easy manipulation of image metadata.