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LAR Subjective evaluations of LAR coding (using a DSIS)

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Categories Images / Quality Assessment
Processing JPEG & JPEG 2000 / LAR coding
Quality assessment method Double Stimulus Impairment Scale
Resolution Less than 960x540
Created the12 Feb 2015


8 original color images were used (4 natural images: DB and 4 art images: EROS DB), 120 distorted images were generated from 3 different processing, and 5 compression rates.

  • JPEG ;
  • JPEG2000 ;
  • LAR coding ;

These algorithms have the advantage to generate very different type of distortions. Subjective evaluations were made at viewing distance of 6 times the screen height using a DSIS (Double Stimulus Impairment Scale) method with 5 categories and 20 observers. Distortions for each processing and each image have been optimised in order to uniformly cover the subjective scale.

A Microsoft Excel spreadsheet, giving all subjective quality scores is included in the above archive.

This work was supported by the 'TSAR' ANR research project (ARA-SSIA-2005 project).

Many thanks to Romuald Pepion & Romain Cousseau for their valuable help in setting up the experiment.

Source publication : Please, cite the following paper(s) in your publications if you use this database in your work

Subjective quality assessment of lar coded art images F. Autrusseau, M. Babel

ReportFeb 2009 BibTex XML