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Pregled bibliografske jedinice broj: 1114152

Evaluation of objective video quality assessment methods on video sequences with different spatial and temporal activity encoded at different spatial resolutions


Vlaović, Jelena; Žagar, Drago; Rimac-Drlje, Snježana; Vranješ, Mario
Evaluation of objective video quality assessment methods on video sequences with different spatial and temporal activity encoded at different spatial resolutions // The International Journal of Electrical and Computer Engineering Systems, 12 (2021), 1; 1-9 doi:10.32985/ijeces.12.1.1 (međunarodna recenzija, članak, znanstveni)


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Naslov
Evaluation of objective video quality assessment methods on video sequences with different spatial and temporal activity encoded at different spatial resolutions

Autori
Vlaović, Jelena ; Žagar, Drago ; Rimac-Drlje, Snježana ; Vranješ, Mario

Izvornik
The International Journal of Electrical and Computer Engineering Systems (1847-6996) 12 (2021), 1; 1-9

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
spatial activity ; spatial resolution ; temporal activity ; video streaming ; video quality assessment

Sažetak
With the development of Video on Demand applications due to the availability of high- speed internet access, adaptive streaming algorithms have been developing and improving. The focus is on improving the user’s Quality of Experience (QoE) and taking it into account as one of the parameters for the adaptation algorithm. Users often experience changing network conditions, so the goal is to ensure stable video playback with a satisfying QoE level. Although subjective Video Quality Assessment (VQA) methods provide more accurate results regarding user’s QoE, objective VQA methods cost less and are less time-consuming. In this article, nine different objective VQA methods are compared on a large set of video sequences with various spatial and temporal activities. VQA methods used in this analysis are: Peak Signal-to-Noise Ratio (PSNR), Structural Similarity Index (SSIM), MultiScale Structural Similarity Index (MS-SSIM), Video Quality Metric (VQM), Mean Sum of Differences (DELTA), Mean Sum of Absolute Differences (MSAD), Mean Squared Error (MSE), Netflix Video Multimethod Assessment Fusion (Netflix VMAF) and Visual Signal-to-Noise Ratio (VSNR). The video sequences used for testing purposes were encoded according to H.264/AVC with twelve different target coding bitrates, at three different spatial resolutions (resulting in a total of 190 sequences). In addition to objective quality assessment, subjective quality assessment was performed for these sequences. All results acquired by objective VQA methods have been compared with subjective Mean Opinion Score (MOS) results using Pearson Linear Correlation Coefficient (PLCC). Measurement results obtained on a large set of video sequences with different spatial resolutions show that VQA methods like SSIM and VQM correlate better with MOS results compared to PSNR, SSIM, VSNR, DELTA, MSE, VMAF, and MSAD. However, the PLCC results for SSIM and VQM are too low (0.7799 and 0.7734, respectively), for the usage of these methods in streaming services instead of subjective testing. These results suggest that more efficient VQA methods should be developed to be used in streaming testing procedures as well as to support the video segmentation process. Furthermore, when comparing results obtained for different spatial resolutions, it can be concluded that the quality of video sequences encoded at lower spatial resolutions in cases of lower target coding bitrate is higher compared to the quality of video sequences encoded at higher spatial resolutions at the same target coding bitrate, particularly when video sequences with higher spatial and temporal information are used.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Informacijske i komunikacijske znanosti



POVEZANOST RADA


Ustanove:
Fakultet elektrotehnike, računarstva i informacijskih tehnologija Osijek

doi

Citiraj ovu publikaciju

Vlaović, Jelena; Žagar, Drago; Rimac-Drlje, Snježana; Vranješ, Mario
Evaluation of objective video quality assessment methods on video sequences with different spatial and temporal activity encoded at different spatial resolutions // The International Journal of Electrical and Computer Engineering Systems, 12 (2021), 1; 1-9 doi:10.32985/ijeces.12.1.1 (međunarodna recenzija, članak, znanstveni)
Vlaović, J., Žagar, D., Rimac-Drlje, S. & Vranješ, M. (2021) Evaluation of objective video quality assessment methods on video sequences with different spatial and temporal activity encoded at different spatial resolutions. The International Journal of Electrical and Computer Engineering Systems, 12 (1), 1-9 doi:10.32985/ijeces.12.1.1.
@article{article, year = {2021}, pages = {1-9}, DOI = {10.32985/ijeces.12.1.1}, keywords = {spatial activity, spatial resolution, temporal activity, video streaming, video quality assessment}, journal = {The International Journal of Electrical and Computer Engineering Systems}, doi = {10.32985/ijeces.12.1.1}, volume = {12}, number = {1}, issn = {1847-6996}, title = {Evaluation of objective video quality assessment methods on video sequences with different spatial and temporal activity encoded at different spatial resolutions}, keyword = {spatial activity, spatial resolution, temporal activity, video streaming, video quality assessment} }
@article{article, year = {2021}, pages = {1-9}, DOI = {10.32985/ijeces.12.1.1}, keywords = {spatial activity, spatial resolution, temporal activity, video streaming, video quality assessment}, journal = {The International Journal of Electrical and Computer Engineering Systems}, doi = {10.32985/ijeces.12.1.1}, volume = {12}, number = {1}, issn = {1847-6996}, title = {Evaluation of objective video quality assessment methods on video sequences with different spatial and temporal activity encoded at different spatial resolutions}, keyword = {spatial activity, spatial resolution, temporal activity, video streaming, video quality assessment} }

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