Perceptual

Perceptual Image Diff is an image comparison utility that makes use of a computational model of the human visual system to compare two images. Its useful for running automated regression testing on images that are perceptually identical but have minor pixel noise from different random number... Platforms: *nix

This project is a Free Software implementation of reccomandation ITU-R.BS.1387 that provide to describe the algorithm of - Perceptual Evaluation of Audio Quality - (PEAQ). Platforms: Mac, BSD, Linux

Freely available tool for near professional visual comparison tests execution. Tool implements blind testing schema - experts don't know, which codec is used for particular video. You can make two types of subjective video video comparisons and apply different ways of analysis of... Platforms: Windows

Japa short from JACK and ALSA Perceptual Analyser is a perceptual or psychoacoustic audio spectrum analyser. In contrast to JAAA, this is more an acoustical or musical tool than a purely technical one. Possible uses include spectrum monitoring while mixing or mastering, evaluation of ambient... Platforms: *nix

This script can be used alongside MATLAB's native function lab2double (CIELAB to RGB conversion).CIELAB is a nonlinear transformation of RGB where the Euclidean distance between two colors is equal to their perceptual distances (for distances less than ~10 units).Algorithms that process color... Platforms: Matlab

This project is used to convert files from one format to another, and to provide a measurement of the quality of the output. This uses the concept of perceptual hashing to create a human-like visual comparison of the original and source files. Platforms: Mac

Sound-Similar (Free Version) is a lightweight software application that measures the perceptual similarity between two WAV files in Linear PCM format, the most commonly used format in WAV files. The degree of similarity is represented by a similarity score in percentage, from 0% to 100%. The... Platforms: Windows, Windows 7

fdmf is portable perl/C software for finding pairs of music files in a collection that are likely to contain the same music. It works on the music itself, not on the filename, tags, or headers. The project uses an audio fingerprint, or perceptual hash to recognize the duplicate files. It is... Platforms: *nix

InfoScope allows users to easily analyze, compare, query, and explore large or complex datasets . InfoScope is a highly interactive visualization tool that shows the big picture by providing an overview of the essential relationships, encourages the explorative discovery of in the overall... Platforms: Windows, Mac, Unix, Linux, Linux Gnome, Java

thDIMIN Image Viewer n5 is a free and useful image utility that lets you to view images in countless formats, and apply a variety of effects with this powerful , small and fast application. Dimin Viewer incorporates unique visualization ideas, like Panoramic Photographs Tool and Big Image... Platforms: Windows

This script can be used alongside MATLAB's native function lab2double (CIELAB to RGB conversion). CIELAB is a nonlinear transformation of RGB where the Euclidean distance between two colors is equal to their perceptual distances (for distances less than ~10 units). Algorithms that process color... Platforms: Windows, Mac, *nix, Matlab, BSD Solaris

FLAC stands for Free Lossless Audio Codec, an audio format similar to MP3, but lossless, meaning that audio is compressed in FLAC without any loss in quality.This is similar to how Zip works, except with FLAC you will get much better compression because it is designed specifically for audio, and... Platforms: C and C plus plus

This software has been realized at the Technology Lab, Department of Cognitive and Neural Systems, Boston University - http://techlab.bu.edu. The main author of the software is Praveen Pilly ( http://techlab.bu.edu/members/advait/ ).How does the brain make perceptual decisions? Speed and accuracy... Platforms: Matlab

When you need to use an image somewhere but it's too big or too small, Free Image Resize is the software you need to resize it. It can magnify or reduce the image size while simultaneously preserving the details & perceptual quality of the original image. Free Image Resize provides several... Platforms: Windows, Windows 8, Windows 7