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LIVE Video Quality Database Introduction Quality assessment databases enable researchers to evaluate the performance of quality assessment algorithms and contribute towards attaining the ultimate goal of objective quality assessment research - matching human perception. Currently, most video quality assessment algorithms are evaluated on the publicly available Video Quality Experts Group (VQEG) FRTV Phase 1 database, which is outdated and has a number of limitations such as interlaced content and poor perceptual separation of videos. Further, the VQEG has not made the videos from any of its subsequent studies (including the FRTV Phase 2 study and the Multimedia study) publicly available, which limits the ability of researchers to benchmark new objective video quality assessment algorithms against the VQEG evaluations. LIVE has developed a video quality assessment database, that will supplement the LIVE Image Quality Database, to provide researchers with a much-needed tool to advance the state-of-the-art in objective video quality assessment. Download We are making the LIVE Video Quality Database available to the research community free of charge. If you use this database in your research, we kindly ask that you reference our papers listed below:
Download information for the database may be obtained by contacting Kalpana Seshadrinathan (kalpana.seshadrinathan@ieee.org). Pre-prints of the papers are also available upon request, please contact Kalpana Seshadrinathan (kalpana.seshadrinathan@ieee.org). Database Description The goal of our study was to develop a database of videos that will challenge automatic VQA algorithms. The LIVE Video Quality Database uses ten uncompressed high-quality videos with a wide variety of content as reference videos. A set of 150 distorted videos were created from these reference videos (15 distorted videos per reference) using four different distortion types - - MPEG-2 compression, H.264 compression, simulated transmission of H.264 compressed bitstreams through error-prone IP networks and through error-prone wireless networks. Distortion strengths were adjusted manually taking care to ensure that the different distorted videos were separated by perceptual levels of distortion. Each video in the LIVE Video Quality Database was assessed by 38 human subjects in a single stimulus study with hidden reference removal, where the subjects scored the video quality on a continuous quality scale. The mean and variance of the Difference Mean Opinion Scores (DMOS) obtained from the subjective evaluations, along with the reference and distorted videos, are available as part of the database. We have also evaluated the performance of several full reference video quality assessment algorithms on the database and performed statistical tests on the results in our paper. Investigators Quality Assessment research at LIVE is being conducted in collaboration with the Center for Perceptual Systems (CPS).The investigators in this research are: Copyright Notice -----------COPYRIGHT NOTICE STARTS WITH THIS LINE------------ The following papers are to be cited in the bibliography whenever the database is used as:
The reference videos in this database are downsampled versions of the original copyright-free videos available from the Technical University of Munich. We processed the downsampled reference videos using various techniques to obtain the distorted videos in this database. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT AUSTIN BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS DATABASE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF TEXAS AT AUSTIN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.THE UNIVERSITY OF TEXAS AT AUSTIN SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE DATABASE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF TEXAS AT AUSTIN HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. -----------COPYRIGHT NOTICE ENDS WITH THIS LINE------------ Back to Quality Assessment Research page
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