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Nested polygonal chain mapping of omnidirectional video
2017 IEEE International Conference on Image Processing (ICIP), 2017Conventionally, the equirectangular projection (ERP) has been used for representing 360-degree panorama videos. However, ERP suffers from over stretching in polar regions and thus increases the bitrate and the encoding/decoding complexity. This paper presents the nested polygonal chain packing method where the top and bottom stripes of an ERP picture ...
Kashyap Kammachi Sreedhar +1 more
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ICDAR2017 Robust Reading Challenge on Omnidirectional Video
2017 14th IAPR International Conference on Document Analysis and Recognition (ICDAR), 2017Results of ICDAR 2017 Robust Reading Challenge on Omnidirectional Video are presented. This competition uses Downtown Osaka Scene Text (DOST) Dataset that was captured in Osaka, Japan with an omnidirectional camera. Hence, it consists of sequential images (videos) of different view angles.
Masakazu Iwamura +5 more
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Omnidirectional video delivery with decoder instance reduction
Internet Technology Letters, 2018The omnidirectional media streaming system as specified in motion pictures expert group (MPEG) is discussed. The paper provides a description of the viewport‐dependent delivery using adaptive bit rate streaming technology. It also describes the extractor method: an encapsulation technique defined in the ISO Base Media File Format.
Kashyap Kammachi Sreedhar +1 more
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H.264 BASED CODING OF OMNIDIRECTIONAL VIDEO
2006Omnidirectional video is an adequate image-based scene representation data format for interactive walkthroughs or surround viewing of a scene over the Internet. While efficient compression is a key issue in this context, the properties of omnidirectional video are not in line with the assumptions that are made about video sequences by modern ...
Ingo Bauermann +2 more
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A Framework to Evaluate Omnidirectional Video Coding Schemes
2015 IEEE International Symposium on Mixed and Augmented Reality, 2015Omnidirectional videos of real world environments viewed on head-mounted displays with real-time head motion tracking can offer immersive visual experiences. For live streaming applications, compression is critical to reduce the bitrate. Omnidirectional videos, which are spherical in nature, are mapped onto one or more planes before encoding to ...
Matt C. Yu +2 more
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Adaptive Motion Vector Prediction for Omnidirectional Video
2018 IEEE Visual Communications and Image Processing (VCIP), 2018Omnidirectional video is widely used in virtual reality applications in order to create the immersive experience to the user. Such content is projected onto a 2D image plane in order to make it suitable for compression purposes by using current standard codecs.
Ramin Ghaznavi Youvalari +1 more
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Omnidirectional Video Quality Metrics and Evaluation Process
2017 Data Compression Conference (DCC), 2017Widespread of virtual reality technologies across entertainment formats has created a diverse infrastructure of related technologies as head-mount displays, dome screens and virtual reality multi-camera platforms. As omnidirectional content is processing pipeline is completely different form conventional planar video and involves multiple conversion ...
Vladyslav Zakharchenko +3 more
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No-reference omnidirectional video quality assessment based on generative adversarial networks
Multimedia Tools and Applications, 2021Yao Luo
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Quality-Constrained Encoding Optimization for Omnidirectional Video Streaming
IEEE Transactions on Circuits and Systems for Video Technology, 2023Roberto Azevedo +2 more
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