In this paper we consider immersive visual media that are currently researched within scientific community. These include the well-established technologies, like 360-degree panoramas, as well those being intensively developed, free viewpoint video and point-cloud based systems. By use of characteristic examples, define features distinguish them from classical 2D video. Also, present representation technologies considered by community, especially in context standardization MPEG-I project...

This paper concerns optimization of encoding in HEVC. A novel method is proposed which modes, e.g. coding block structure, prediction types and motion vectors, are selected basing on noise-reduced version the input sequence, while content, transform coefficients, coded unaltered sequence. Although scheme involves two versions realization ensures that complexity only negligibly larger than a single encoder. The proposal has been implemented assessed. experimental results show provides up to...

We propose a new coding technology for 3D video represented by multiple views and the respective depth maps. The proposed is demonstrated as an extension of recently developed high efficiency (HEVC). One base are compressed into standard bitstream (like in HEVC). remaining maps using tools that mostly rely on view synthesis. In decoder, those derived via synthesis space from decoded baseview data corresponding to small disoccluded regions. shapes locations regions can be decoder without any...

In this paper, we present a method for obtaining manifold color correction transform multiview images. The can be applied in various scenarios, correcting the colors of stitched images, adjusting images obtained different lighting conditions, and performing virtual view synthesis based on taken by cameras or conditions. provided derivation allows us to use correct regular RGB solution is specified as matrix that provides pixel-specific transformation each pixel therefore more general than...

ISO/IEC MPEG and ITU-T VCEG have recently jointly issued a new multiview video compression standard, called 3D-HEVC, which reaches unpreceded performances for linear, dense camera arrangements. In view of supporting future highquality, auto-stereoscopic 3D displays Free Navigation virtual/augmented reality applications with sparse, arbitrarily arranged setups, innovative depth estimation virtual synthesis techniques global optimizations over all views should be developed. Preliminary studies...

In the paper, we propose a new method for virtual view synthesis called as Multiview Synthesis. our approach, views are synthesized using two neighboring real views, but disoccluded areas not inpainted, filled by information from further - additional traditionally included in synthesis. The whole is performed with triangles rather than individual pixels. proposed Synthesis, steps of adaptive color correction, blurred edge removal and spatial blurring also included. experimental results show...

A complete encoding solution for efficient intra-based depth map compression is proposed in this paper. The algorithm, denominated predictive coding (PDC), was specifically developed to efficiently represent the characteristics of maps, mostly composed by smooth areas delimited sharp edges. At its core, PDC involves a directional intra prediction framework and straightforward residue method, combined with an optimized flexible block partitioning scheme. In order improve algorithm presence...

We deal with the processing of multiview video acquired by use practical thus relatively simple acquisition systems that have a limited number cameras located around scene on independent tripods. The real-camera locations are nearly arbitrary as it would be required in real-world Free-Viewpoint Television systems. appropriate test sequences also reported. describe family original extensions and adaptations algorithms adapted to camera positions scene. techniques constitute chain for they...

The paper presents an extension of 3D-HEVC for the circular camera arrangements. It generalizes derivation disparity vectors from depth data sequences captured using cameras located on arc. general equation calculations has been implemented instead simplified used in 3D-HEVC. Experiments have performed widely recognized multiview test with both and linear In case obtained arc, proposed provides about 6% bitrate reduction when compared to 3D HEVC, does not influence performance view arranged...

The paper deals with prospective 3D video transmission systems that would use compression of both multiview and depth maps. addresses the problem quality views synthesized from other transmitted together information. For state-of-the-art map estimation view synthesize techniques, proves AVC/SVC-based Multiview Video Coding technique can be used for pictures reports extensive experiments where has been estimated by PSNR index subjective assessment. Defined is critical value quantization...

This paper deals with similarity measures for stereoscopic depth estimation. These are used matching of image pairs, which is the first step estimation process. We analyze influence these on performance use commonly known and compare results some novel proposals. The judged by increase quality view synthesis, main aim this paper. Experimental over a variety moving material demonstrate that considerable gain can be attained without any modifications to core tuning stage only. Finally,...

The paper deals with multiview video coding using the new technology of High Efficiency Video Coding (HEVC). Implementation in framework HEVC is described together specific tools proposed by authors. Extensive experimental results are reported for compression performance comparison MVC (ISO 14496-10), simulcast and two versions "multiview HEVC". For HEVC" indicate significant bitrate reduction about 50%, as compared to state-of-the-art standardized a part AVC (MPEG-4, H.264).

During the last two decades, a new technology generation of video compression was introduced about each 9 years. Each compression-technology provides halving necessary bitrates as compared to previous generation. This increasing single-view performance is related multiview coding. For with associated depth maps, additional significant bitrate reduction may be achieved. The paper reports original that designed and developed at Poznań University Technology in response MPEG Call for Proposals...

In this paper, we propose a fast technique for real-time depth estimation that is implementable on mobile devices like smartphones and tablets. Moreover, the FPGA-based implementations of are also reported. The idea to use small-block matching exploit recently estimated disparity values in order enhance spatial consistency output map. Using Middlebury stereoscopic test images, proposed compared other techniques known from references. obtained results demonstrate high efficiency implemented...

The paper focuses on two problems: 1) analysis of bitrate contribution I and B frames in encoded HEVC data stream, 2) distribution syntax elements frames. relationship between sizes located at a different levels hierarchical coding scheme was experimentally determined, as well streams I, B0, B1, B2, B3 results are presented the paper. All concern wide range QP values video encoder.

The paper presents the concept of a practical free-viewpoint television system with purely optical depth estimation. consists camera modules that contain pairs or triples cameras together respective microphones. can be sparsely located in arbitrary positions around scene. Each module is equivalent to video sensor and hardware requirements, audio processing algorithms preliminary experimental results are reported. In particular, for such systems, compression technique discussed more efficient...

Nowadays, research focusing on robotics, autonomous vehicles, and scene analysis shows a clear need for the ability to accurately reconstruct three-dimensional environments. One of methods allowing conduct such reconstruction is use set cameras image processing techniques. This passive method. Despite being, in general, less accurate than its active counterparts, it offers significant advantages numerous applications which systems cannot be deployed due limited performance. paper provides...

The paper considers the influence of a lossy compression multiview video on quality estimated depth maps. We have encoded set views with commonly known techniques used in compact IP cameras: HEVC (MPEG H part 2 / H.265), A VC 4 10 H.264) and MPEG H.262. Basing decoded data we maps rendered intermediate virtual views. drop was studied by comparison out from an uncompressed video. obtained results show that reasonable rate, lower is acceptable for real implementable FTV systems.

In the paper, novel methods for quality control in multiview with depth video compression are described. First, a simple steepest-descent-based algorithm adjusting quantization parameters texture and corresponding to obtain maximal given bitrate is proposed. Then, experimental results shown, basing on which mathematical model calculation of The paper also covers subject coding different resolution than texture. work presented context most contemporary related AVC, but could be easily adapted...

In this paper, we present the most efficient coding tools that are used in a new video compression technology for multiple views with depth maps. This very well performing was designed and developed response to MPEG Call Proposals on 3D Video Coding Technology. The proposed exploits tool reduces side maps small disoccluded regions. way only one central view map coded HEVC syntax while remaining synthesized decoder from regions central-view data. Therefore, bitrate needed is mostly below 20%...

The paper describes an experimental multiview video produc-tion, processing and delivery chain developed at Poznan Univer-sity of Technology for research on free-viewpoint television. multiview-video acquisition system consists HD camera units with wireless synchronization, control, stor-age power supply units. Therefore no cabling is needed in the system, which important shooting real-world events. mostly used nearly circular setup cameras but locations are arbitrary, procedures calibration...