Depth video coding is an essential part of 3-D processing systems. Specifically, object boundary regions are important in depth since these significantly affect the visual quality a synthesized view. In this paper, we propose efficient method to determine precise intra prediction modes and thereby reduce loss information. To achieve objective, analyze exploit statistical geometric characteristics video. Experimental results subsequently show that proposed performs better than original...

We study optical technologies for viewer-tracked autostereoscopic 3D display (VTA3D), which provides improved image quality and extended viewing range. In particular, we utilize a technique-the so-called dynamic fusion of zone (DFVZ)-for each line to realize equivalent that achievable at optimal distance, even when viewer is moving in depth direction. addition, examine quantitative properties zones provided by the VTA3D system adopted DFVZ, revealing can be formed position. Last, show...

Visual discomfort induced by inharmonious human 3D perceptions between the real world and a display is encountered most commonly in stereoscopic displays. Although various state-of-the-art technologies have reduced gaps, these delicate differences yield eye fatigue during adaptation of brain to artificial information Therefore, assessment visual discomfort, either producing or reproducing content, essential improve viewers' quality experience. In this paper, we used EEG investigate...

In the 3-D display field, super multi-view (SMV) technology has drawn keen attention owing to its advanced features: smooth motion parallax, wide depth of focus, and a possibility visual discomfort alleviation. Nevertheless, applications are limited because narrow viewing lobes (VLs), unavoidable prevent an excessive decrease lateral resolution. To expand VLs, many head-tracked technologies have been developed for decades, but restrictive distance (VD) still remains as one most critical...

Three-dimensional (3D) shape reconstruction from one or multiple observations is a primary problem of computer vision. Shape Focus (SFF) passive optical method that uses two-dimensional (2D) images with different focus levels. When obtaining 2D in each step along the axis, mechanical vibrations, referred as jitter noise, occur. SFF techniques are vulnerable to noise can vary values images. In this paper, new filtering method, which provides high accuracy 3D and low computational cost,...

In 3D video system including depth information, once a is coded by the state-of-the-art compression tools such as H.264/AVC, errors around boundaries of objects can be intensified, and these significantly affect quality rendered virtual view later. Despite this drawback coding, its essential because enormous amount input data in system. paper, we propose line-based partitioned intra prediction method which exploits geometric redundancy for an efficient without significant boundaries. The...

Depth map up-sampling methods have achieved remarkable improvement by exploiting sensor fusion techniques where they assume that the depth discontinuities and image edges coincide, values of temporal neighbors are stable during time variation. However, inherent noise data acquired active range sensors often violates these assumptions, results in undesirable error propagation. To alleviate propagation, this letter presents a new adaptive supporting method spatially–temporally neighboring...

Shape from Focus (SFF) is one of passive optical methods for estimating 3D shape an object. In SFF, a large number 2D images with different focus levels are required. The may affect the complexity and accuracy results. this manuscript, Gaussian process regression (GPR) method proposed to get minimum images. (SFF.GPR) applied fit curves, which obtained by applying measure operators. Experimental results demonstrate effectiveness method.

In this paper, we propose an efficient depth video coding method for the 3D (3DV) system. Since boundary information of significantly affects rendering quality in 3DV system, proposed reduces loss by producing precise intra prediction modes. The characteristics are analyzed and considered to modify previous geometry-adaptive block partitioning method. guarantees a better performance than H.264/AVC. Experimental results have shown that 0.33 dB gain terms PSNR subjective improvement...

Background/Aims: In exploring human factors, stereoscopic 3D images have been used to investigate the neural responses associated with excessive depth, texture complexity, and other factors. However, cortical oscillation complexity of has studied rarely. Here, we demonstrated that oscillatory three differently shaped (circle, star, bat) increase as image increases. Methods: We recorded simultaneous EEG/MEG for different stimuli. Spatio-temporal spatio-spectro-temporal features were...

One of the most frequently encountered problems in multiview depth video coding (MDVC) is relatively low temporal and inter-view correlations when compared to that color (MCVC). This directly results degraded performance conventional inter-prediction. In this study, we analyze noticeable differences statistical characteristics between MDVC MCVC. On basis these differences, propose a new depth-discrepancy compensation (DDC) method with adaptive segment management alleviate degradation....

Determining the features of human binocular vision according to given disparity information has gained significant interest with regard 3-D-relevant fields. However, subjectively distinguishing is internally ambiguous owing personal factors and external susceptibility due viewing environmental factors. Moreover, high cost low reproducibility subjective assessment method restricts its usability in numerous practical applications. To alleviate these problems, this paper presents a novel visual...

Nowadays, the 3D video system using MVD (multi-view plus depth) data format is being actively studied. The has many advantages with respect to virtual view synthesis such as an auto-stereoscopic functionality, but compression of huge input remains a problem. Therefore, efficient extremely important in system, and problems low temporal consistency viewpoint correlation should be resolved for depth coding. In this paper, we propose object-adaptive compensated inter prediction method resolve...

Visual discomfort (VD) is inevitable as long stereoscopy used in 3D displays, and there's a trade-off between depth impression visual comfort. For this reason, technologies that control considering VD perception have attracted great interest of researchers. However, significantly varies according to various personal-factors well environmental factors, evaluating still takes lot time effort for viewing tests. We propose simple reliable method calibrates stereo acuities, binocular fusion...

Due to the recent explosion in various forms of 3D content, evaluation such content from a neuroscience perspective is quite interesting. However, existing investigations cortical oscillatory responses stereoscopic depth perception are rare. Therefore, we investigated spatiotempo ral and spatio-temporo-spectral features at four different depths within comfort zone. We adopted simultaneous EEG/MEG acquisition technique collect eight participants. defined subject-specific retinal disparities...

In autostereoscopic display using LASER beam scanning type of multiple projectors, accurate projector calibration is essential to alleviate optical distortions such as keystone distortion. However, calibrating hundreds projectors with high accuracy takes too much time and effort. Moreover, there exist a limited range where viewers can percept correct depth respect human visual system (HVS) although the ideal possible. After fine calibration, we explored its brute-force technique, analyzed...

Auto-stereoscopic displays using slanted optical plates have inherent subpixel rasterization compared to the normal 2D displays, and mappings between positions multi-view indices even vary according number of views angles plates. In this paper, we derive a simple but generalized formula for from naïve ray-tracing technique on RGB stripe type panels. To verify proposed algorithm, our proto-type auto-stereoscopic display parallax barriers with angle was used examined in experiment. The...