Although Quality of Experience (QoE) of Internet services can be affected by context influence factors, their actual impact is not widely investigated yet. In the context of online video services, web portals often display advertisement banners or clips to monetize their service. However, these advertisements can distract or annoy the users, which might degrade the QoE of the actual video service. In this work, two crowdsourcing studies were conducted to investigate the impact of advertisement banners and clips on video QoE. Therefore, both theoretical opinions on in-service advertisements and subjective quality ratings are evaluated. The findings confirm that advertisements are negatively perceived by users during service consumption, but a generally negative impact on video QoE cannot be supported, as the interplay of advertisement and the QoE of video services is rather complex.
Nowadays, there are many kinds of technologies to provide multimedia TV content in different formats and picture quality. Three-dimensional (3D) video is one of the next generation TV services with specific features from the video image quality point of view. Naturally, efficient compression tools enabling significant bit rate reduction to ease 3D video distribution are an integral part of any practical 3D video system implementation. In this paper, we present a study of recent and upcoming compression tools for stereoscopic videos. We consider H.264 Advanced Video Coding (AVC), H.264 Annex H -Multiview Video Coding (MVC), H.265 High Efficiency Video Coding (HEVC) and H.265 Annex G -Multiview High Efficiency Video Coding (MV-HEVC) video coding formats to process stereoscopic videos with different properties. To compare the performance of considered compression tools, we provide an analysis of the encoded/decoded stereoscopic video quality using objective metrics.Index Terms-3DTV, 3D video coding, objective video quality metrics, PSNR, SSIM, stereoscopic video, VQM.
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