The ISTOmnidirectional Dataset is the result of a subjective assessment campaign, performed in IST - Technical University of Lisbon and IT - Instituto de Telecomunicações, that was conducted to evaluate the impact, on quality, of HEVC compression and/or spatial&temporal subsampling, when the omnidirectional videos are displayed in a head mounted device (HDM).
The subjective assessment results were used as ground-truth to evaluate conventional quality assessment metrics developed for 2D video, as well as some of the recently proposed metrics for omnidirectional video, namely, spherical peak-signal to noise ratio (S-PSNR), weighted to spherically uniform PSNR (WS-PSNR), and viewport PSNR (VP-PSNR); in the context of this study, the adaptation of two SSIM based metrics, to omnidirectional contents, were also proposed and evaluated. The ISTOmnidireccional dataset content includes:
- Spatial subsampling (28 videos + MOS and DMOS scores; size: 5.7 Gbytes)
- Temporal subsampling (30 videos + MOS and DMOS scores; size: 9 Gbytes)
- HEVC compression (30 videos + MOS and DMOS scores; size: 1.9 Gbytes)
- Combined spatial and temporal subsampling + HEVC compression (24 videos + MOS scores; size: 1.2 Gbytes)
The ISTOmnidirectional Dataset, as well as the aforementioned objective metrics evaluation, are described in here
To have access to the ISTOmnidireccional Dataset, please send an e-mail to Prof. João Ascenso ([email protected]) and Prof. Paula Queluz ([email protected]) to receive the credentials (login/passwd). The dataset has roughly 17 Gbytes of data and can be acessed by FTP.
If you use the ISTOmnidirectional Dataset in your research, we kindly ask that you reference this website and the following publication:
Francisco Lopes, João Ascenso, António Rodrigues, Maria Paula Queluz, "Subjective and Objective Quality Assessment of Omnidirectional Video", Proc. of SPIE Optical Engineering + Applications (OP18O), Applications of Digital Image Processing XLI Conference, San Diego, CA, USA, August 2018. (available here)