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IRCCyN_IVC_Toyama_LCD Subjective quality experiment on LCD still images from a database done on CRT
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Information
| Categories | Images / Quality Assessment |
|---|---|
| Processing | JPEG & JPEG 2000 |
| Quality assessment method | Absolute Category Rating - Hidden Reference |
| Created the | 09 Jan 2015 |
Overview
This database contains several contents with for each content, the reference (without processing or degradation) and seven different compression rates in jpeg or jpeg2000. There is one spreadsheet with the individual score and the MOS for each video for the ACR methodology. A text file presents the conditions in which the still images was evaluated.
This database completes the MICT database with different protocol, different type of display device and different populations.The results of the two databases can be used to consider the display technology and the population in a quality model, like in this paper for example.
The contents of this database are images. The resolution is 768x512 pixels. The images are displayed on a 1280x1024 pixels display and an uniform gray is put around the image to keep the native resolution of the image. The display is a progressive one and the refresh frequency is 60Hz.
Provided data
Images
These images are BMP files. The resolution is 768x512 pixels.
Subjective scores
The subjective scores are provided. An Excel file is provided. In this file, there are two spreadsheets, one for each test session (JPG and JP2). In the 2 spreadsheets, an image is associated to a line and an observer to a column. You have access to all individual vote from each observer to each image.The last column is the Mean Opinion Score (MOS).
Hypothetical Reference Circuits
The HRCs are based on JPEG and JPEG2000 codec. All contents are compressed with the same parameter values. The subjective experiment is composed by 2 parts. One for JPEG contents and another one for the JPEG2000 contents. The last column specify in which part the HRC is included. For each part, there are 8 HRC applied on 14 image contents so there are 112 images in each parts.
| Codec and compression value | Image name (XX is the number of the content) | HRC description | Part |
|---|---|---|---|
| Reference | kpXX.bmp | Image Reference (no impairment) | JPG & JP2 |
| JPEG 15 | kpXX_15_jpg.bmp | JPEG coded with the compression parameter of 15 | JPG |
| JPEG 20 | kpXX_20_jpg.bmp | JPEG coded with the compression parameter of 20 | JPEG |
| JPEG 27 | kpXX_27_jpg.bmp | JPEG coded with the compression parameter of 27 | JPG |
| JPEG 37 | kpXX_37_jpg.bmp | JPEG coded with the compression parameter of 37 | JPG |
| JPEG 55 | kpXX_55_jpg.bmp | JPEG coded with the compression parameter of 55 | JPG |
| JPEG 79 | kpXX_79_jpg.bmp | JPEG coded with the compression parameter of 79 | JPG |
| JPEG2000 00 | kpXX_00_jp2.bmp | JPEG2000 coded with the compression parameter of 0 | JPG & JP2 |
| JPEG2000 12 | kpXX_12_jp2.bmp | JPEG2000 coded with the compression parameter of 12 | JP2 |
| JPEG2000 24 | kpXX_24_jp2.bmp | JPEG2000 coded with the compression parameter of 24 | JP2 |
| JPEG2000 32 | kpXX_32_jp2.bmp | JPEG2000 coded with the compression parameter of 32 | JP2 |
| JPEG2000 48 | kpXX_48_jp2.bmp | JPEG2000 coded with the compression parameter of 48 | JP2 |
| JPEG2000 72 | kpXX_72_jp2.bmp | JPEG2000 coded with the compression parameter of 72 | JP2 |
| JPEG2000 96 | kpXX_96_jp2.bmp | JPEG2000 coded with the compression parameter of 96 | JP2 |
Experience information
| Display | LCD DELL 1704FPT |
|---|---|
| Luminance | 0.3 / 180cd/m² |
| Observation distance | 4H |
| Resolution | 768x512 pixels |
| Display frequency | 60Hz |
| Methodology | ACR |
| Duration | 30 minutes |
| Number of images | 196 |
| Rejection method | VQEG Multimedia Tesplan |
| Number of observers | 27 (no outlier) |
Related pages
Source publication : Please, cite the following paper(s) in your publications if you use this database in your work
Impact of the subjective dataset on the performance of image quality metrics S. Tourancheau, F. Autrusseau, P. Sazzad, Y. Horita
Conference paperIEEE International Conference on Image Processing 2008. ICIP 2008., Oct 2008, San Diego, CA, United States
Which semi-local visual masking model for wavelet based image quality metric? A. Ninassi, O. Le Meur, P. Le Callet, D. Barba
Conference paperIEEE International Conference on Image Processing, Oct 2008, San Diego, United States
Database Download Guide for ftp://ftp.ivc.polytech.univ-nantes.fr/IRCCyN_IVC_Scores_On_Toyama_Images/
Use a FTP Manager to download all files at once
| Host | ftp.ivc.polytech.univ-nantes.fr |
|---|---|
| Port | 21 |
| User information | Anonymous |
| Directory | IRCCyN_IVC_Scores_On_Toyama_Images/ |
With Filezilla (Windows, Linux, Mac OS)
- Download the FileZilla Client software at https://filezilla-project.org/ and install it.
- Launch File > Sites Manager and fill in the form. The Host is ftp.ivc.polytech.univ-nantes.fr. Use Anonymous for Logon Type. All others fields can be left blank. Finally, press Connect.
- In the first panel, you can see connection's logs. Normally, a message like Response: 220 ftproxy FTP server (Version 1.9.2.4 - 2005/01/11 13:03:28) ready. is printed.
- The left column below contains your computer file system and the selected folder. In the right column, you can see the FTP server file system and its selected folder.
- In the left colum, select the local directory in which receive the database. In the right panel, find IRCCyN_IVC_Scores_On_Toyama_Images/ , right click and press Download.
- Bottom panel shows file transfer informations. All files of the databases are being downloaded in your computer. Please wait during the transfer.
With WGET (Linux)
Copy and paste this command in a terminal :
wget -P your/destination/folder ftp://ftp.ivc.polytech.univ-nantes.fr/IRCCyN_IVC_Scores_On_Toyama_Images/
