Subjective_Database Distorted Images and theirs subjective evaluations (DSIS)
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Information
Categories | Images / Quality Assessment |
---|---|
Processing | Blur / JPEG & JPEG 2000 / LAR coding |
Quality assessment method | Double Stimulus Impairment Scale |
Resolution | Less than 960x540 |
Created the | 12 Feb 2015 |
Size | 115.2 Mo |
Information
10 original images were used, 235 distorted images were generated from 4 different processing:
- JPEG ;
- JPEG2000 ;
- LAR coding ;
- Blurring.
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 15 observers. Distortions for each processing and each image have been optimised in order to uniformly cover the subjective scale.
A Microsoft Excel worksheet, giving all subjective quality scores is included in the above archive.