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After the appearance of digital broadcasting, realistic images such as 3D and high resolution broadcasting are rapidly developing and evolving. And, recent trend emphasizes not only viewing the information but also using it through the display media. To keep up with this trend, large size display manufacturers are trying to support resolution beyond the full HD, in order to display additional information...
High definition (HD) and ultra-high definition (UHD) digital TV require high-resolution images and lots of data transfers between processors and memory devices often become the bottleneck of the system. Video and image signal processing usually require blocks of square or rectangular shaped pixel data for signal processing. It requires frequent precharging and activating new rows, and results in extra...
Panoramic videos provide a high resolution wide-angle field of view to audience. The rendering of such panoramic videos on large multi-projector curved displays further enhances the experience by providing them an immersive visual environment. Immersive panoramic projection thus comprise of three steps: acquisition of videos, stitching of video frames and their projection using multi-projector display...
This paper proposes a fast mode decision algorithm for 3D High Efficiency Video Coding (3D-HEVC) depth intra coding. In the current 3D-HEVC design, it is observed that for most of the cases, full rate-distortion (RD) cost search of Bi-Partition mode could be skipped since most coding units (CUs) of depth map are very flat or smooth while Bi-Partition modes are designed for CUs with edge or sharp transition...
Multi-projector displays allow the realization of large and immersive projection environments by allowing the tiling of projections from multiple projectors. Such tiled displays require real time geometrical warping of the content that is being projected from each projector. This geometrical warping is a computationally intensive operation and is typically applied using high-end graphics processing...
HEVC is the latest coding standard to improve the coding efficiency by a factor of two over the previous H.264/AVC standard at the cost of the increased complexity of computation rate-distortion optimization (RDO) is one of the computationally demanding operations in HEVC and makes it difficult to process the HEVC compression in real time with a reasonable computing power. This paper aims to present...
A scalable video coding (SVC) server can simultaneously provide a single bitstream with a fixed maximum service layer for different kinds of devices having different memory capacity, network bandwidth, and CPU performance requirements. An efficient hybrid 3D video service scheme is proposed without violation of the SVC standard technology for multiple transmission paths. A dynamic local disparity...
With the spread of portable smart devices, social networking services are gaining popularity. At the same time, emoticons which can be used a primary tool to deliver the enriched personal feelings are also gaining popularity in the social networking services. Now, emoticon markets are much bigger than before since the territory of emoticons broadens the culture and social issues. However, provided...
This paper presents a novel image restoration algorithm using examples and truncated constrained least squares (TCLS) filter for ultra-high definition (UHD) television systems. The proposed approach consists of three steps: (i) generation of the patch dictionary using multiple-step image blurring, (ii) selection of the optimum patch based on the orientation and the amount of blurring, and (iii) combination...
3D video has recently seen a massive increase in exposure in our lives. However, differences between the viewing and shooting conditions for a film lead to disparities between the reformed media and the original three-dimensional effect, which cause severe visual fatigue to viewers and result in headaches and dizziness. In this paper, a series of image processing algorithms are introduced to overcome...
Perceptually salient regions have a significant effect on visual comfort in stereoscopic 3D (S3D) images. The conventional method of obtaining saliency maps is linear combination, which often weakens the saliency influence and distorts the original disparity range significantly. In this paper, we propose visual comfort enhancement in S3D images using saliency-adaptive nonlinear disparity mapping....
An increasing number of studies on efficient implementation of vivid and realistic displays are being conducted as liquid crystal displays (LCDs) become widely used in TV applications. For vivid displays, the specifications such as wide color gamut (WCG) and high dynamic range (HDR) should be implemented in LCDs. However, the low transmittance rate of the WCG and the significant costs for the peak...
In general, to achieve high compression efficiency, a 2D image or a 2D block is used as the compression unit. However, 2D compression requires a large memory size and long latency when input data are received in a raster scan order that is common in existing TV systems. To address this problem, a 1D compression algorithm that uses a 1D block as the compression unit is proposed. 1D set partitioning...
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