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For the purpose of this paper we group, under the generic term multiview video, different systems for which multiple standard video cameras and, possibly, additional depth-capturing cameras, are used. Video is then presented to the user using special glasses or displays. Research work in this area has focused on topics ranging from designing compression techniques to developing new 3D displays. In...
We evaluate the scalability of a multiple view distributed approach to recording presentations that utilizes camera equipped mobile devices. We show this approach is scalable in terms of video resolution, bandwidth and power. This scalability enables users with a broader range of mobile devices to effectively participate in presentations. We show our approach is less expensive, more scalable, flexible...
Since the data size of the multi-view video increases at a linear speed with the increase of cameras number, it is necessary to compress multi-view video data for efficient storage and transmission. An efficient typical multi-view video coding (MVC) coding scheme can exploit temporal, as well as inter-view dependencies between adjacent cameras. This paper discusses the correlation of views and temporal...
We present a novel approach of distributing video lectures by capturing multiple regions of interest from a high definition camera and then distributing via a peer-to-peer network to participants' viewing devices. We show this approach is scalable and supports a broader range of viewing devices for participants. Our approach is more flexible than relying on a traditional camera operator to capture...
Current view synthesis prediction (VSP) techniques for multiview video coding (MVC) rely on disparity-based view interpolation or depth-based 3D warping. The former cannot be applied to every camera view, whereas the latter may require coding of the depth information of a scene. To avoid these constraints, we propose an improved VSP-based MVC scheme based on the following three techniques: 1) view...
IP cameras are key devices for a video surveillance system. This paper introduces a cost effective, power efficient and low profile IP camera. The camera consists of a video preprocessing unit, an H.264 encoder, and an embedded streaming server. The video preprocessing unit is used for video data acquisition and format conversion; the H.264 encoder compresses the preprocessed data with H.264 baseline...
With the advent in display technology, the 3DTV will provide a new viewing experience without the need of wearing special glasses to watch the 3D scenes. One of the key elements in 3DTV is the multi-view video coding, obtained from a set of synchronized cameras, capture the same scene from different view points. The video streams are synchronized and subsequently used to exploit the redundancy contained...
This paper evaluates our 3D view interpolation rendering algorithm and proposes a few performance improving techniques. We aim at developing a rendering method for free-viewpoint 3DTV, based on depth image warping from surrounding cameras. The key feature of our approach is warping texture and depth in the first stage simultaneously and postpone blending the new view to a later stage, thereby avoiding...
Reducing spatial redundancies between different camera views is one of the major challenges in multi-view video coding (MVC). However, with drastic increase in time consumption of such process, a proper way to reduce high computational complexity is needed. We propose an object-based fast prediction mode decision method in order to reduce complexity and time consumption of the coding process. Since...
In this paper, we present a low complexity Modulo-PCM based coding algorithm for high speed video cameras used in applications that demand very high frame rates. By compressing the raw digital video generated at the camera front-end, our algorithm reduces the high data transfer speed required in this type of cameras. At the encoder, our algorithm compress the raw digital video by selectively removing...
Networks of multiple video cameras are being deployed in several scenarios like surveillance, traffic enforcement, human motion analysis and sports telecast. The unmanageable size of the raw video sequences necessitates the use of compression schemes to efficiently encode these videos. Traditional video compression schemes account for spatial and temporal redundancy in a video sequence. In this paper,...
In recent years advanced video codecs have been developed, such as standardized in MPEG-4. The latest video codec H.264/AVC provides compression performance superior to previous standards, but is based on the same basic motion-compensated-DCT architecture. However, for certain types of video, it has been shown that it is possible to outperform the H.264/AVC using an object-based video codec. Towards...
We developed a novel wind noise reduction technology for a digital video camera. This technology, based on our newly developed "clear sound algorithm", reduces wind noise without deteriorating the sound quality. It mainly consists of a wind noise detector, a harmonic structure restoration module, and a MPEG4-AAC module.
This paper proposes a new algorithm of only using motion vectors (MVs) of macroblocks contained in MPEG encodings to fast extract camera motion directly from compressed videos. Due to very low computing cost, our algorithm is faster than real-time processing, and thus suitable for implementation on hardware, such as PTZ video camera.
The goal of Multi-view Video Coding is to allow coding of multiple camera views such that the user has the freedom of choosing the view point. While there have been significant efforts in multi-view compression, the work on navigation has been limited. The biggest challenge here is in developing user friendly and intuitive navigation of multi-view content. We propose a system which consists of multi-view...
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