Browsing by Author "Kara, Burak"
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Benchmarking the second edition of the omnidirectional media format standard
Kara, Burak; Akçay, Mehmet Necmettin; Beğen, Ali Cengiz; Ahsan, S.; Curcio, I. D. D.; Kammachi-Sreedhar, K.; Aksu, E. (IEEE, 2022)Omnidirectional MediA Format (OMAF) is the first worldwide virtual reality (VR) standard to store and distribute immersive media, completed in 2019. Later, in 2021, the second edition of this standard (OMAF v2) was published. ... -
Could head motions affect quality when viewing 360° videos?
Kara, Burak; Akçay, Mehmet Necmettin; Beğen, Ali Cengiz; Ahsan, S.; Curcio, I. D. D.; Aksu, E. B. (IEEE, 2023-04-01)Measuring quality accurately and quickly (preferably in real time) when streaming 360° videos is essential to enhance the user experience. Most quality-of-experience metrics have primarily used viewport quality as a simple ... -
Enhancement of 360-video experience during head motion
Efficient use of available bandwidth is vital when streaming 360-degree videos, as users rarely have enough bandwidth for a pleasant experience. The combination of viewport-dependent streaming (VDS) and rate adaptation is ... -
Head-motion-aware viewport margins for improving user experience in immersive video
Akçay, Mehmet Necmettin; Kara, Burak; Ahsan, S.; Beğen, Ali Cengiz; Curcio, I.; Aksu, E. (ACM, 2022-01-10)Viewport-dependent delivery (VDD) is a technique to save network resources during the transmission of immersive videos. However, it results in a non-zero motion-to-high-quality delay (MTHQD), which is the delta time from ... -
HTTP adaptive streaming over multiple network interfaces
Kara, Burak; Öztürk, Kemal Sarp; Beğen, Ali Cengiz (The ACM Digital Library, 2020-05)Enhancing user experience in streaming applications is an important problem. Delivering the best quality possible for the given network conditions is not an easy task. In the case of a streaming client running in a multi-homed ... -
Quality upshifting with auxiliary I-Frame splicing
Akçay, Mehmet Necmettin; Kara, Burak; Beğen, Ali Cengiz; Ahsan, S.; Curcio, I. D. D.; Kammachi-Sreedhar, K.; Aksu, E. (IEEE, 2023)This paper introduces the Auxiliary I-Frame Splicing method to reduce bandwidth waste in adaptive streaming. This method involves fetching a high-quality I-frame and splicing it into the already downloaded low-quality ... -
Rate-adaptive streaming of 360-degree videos with head-motion-aware viewport margins
Akçay, Mehmet Necmettin; Kara, Burak; Beğen, Ali Cengiz; Ahsan, S.; Curcio, I. D. D.; Aksu, E. (IEEE, 2022)Efficient use of available bandwidth is vital when streaming 360-degree videos as users rarely have enough bandwidth for a pleasant experience. A promising solution is the combination of viewport-dependent streaming using ...
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