Results 221 to 230 of about 47,194 (280)

An Investigation of Dehazing Effects on Image and Video Coding

IEEE Transactions on Image Processing, 2012
This paper makes an investigation of the dehazing effects on image and video coding for surveillance systems. The goal is to achieve good dehazed images and videos at the receiver while sustaining low bitrates (using compression) in the transmission pipeline.
Truong Nguyen, Kristofor B Gibson, Dung T Võ   +2 more
exaly   +3 more sources

Quadtree Optimization for Image and Video Coding

Journal of VLSI signal processing systems for signal, image and video technology, 1997
The optimal design of quadtree-based codecs is addressed. Until now, work in this area has focused on the optimization of the quadtree structure for a given set of leaf quantizers while neglecting the design of the quantizers themselves. In cases where the leaf quantizers have been considered, codebooks have been optimized without regard to the ...
Michael Lightstone, Sanjit K. Mitra
openaire   +1 more source

Efficient quadtree coding of images and video

IEEE Transactions on Image Processing, 1991
The quadtree data structure is commonly used in image coding to decompose an image into separate spatial regions to adaptively identify the type of quantizer used in various regions of an image. The authors describe the theory needed to construct quadtree data structures that optimally allocate rate, given a set of quantizers.
Gary J. Sullivan, Richard L. Baker
openaire   +3 more sources

A tutorial on image/video coding standards

2013 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2013
The field of image and video compression has gone through rapid growth during the past thirty years, leading to various coding standards. The main goal of continuous efforts on image/video coding standardization is to achieve low bit rate for data storage and transmission, while maintaining acceptable distortion.
Jin Zeng 0004, Oscar C. Au, Wei Dai 0002, Yue Kong, Luheng Jia, Wenjing Zhu   +5 more
openaire   +1 more source

Data Hiding for Image and Video Coding

2006
Chapter ...
P. Campisi, PIVA, ALESSANDRO
openaire   +3 more sources

A Review of Image and Video Coding Standards

Fundamenta Informaticae, 1998
We present the most popular image and video coding standards. We concentrate on lossy compression techniques and ISO and ITU-T standards. JPEG image compression standard is described and its successor, currently developed JPEG-2000 is mentioned. For video, there are several standards aimed at different applications.
openaire   +2 more sources

Image and Video Coding Standards

AT&T Technical Journal, 1993
Most image or video applications involving transmission or storage require some form of data compression to reduce the otherwise inordinate demand on bandwidth and storage. Compatibility among different applications and manufacturers is very desirable, and often essential. This paper describes several standard compression algorithms developed in recent
Rangarajan Aravind, Glenn L. Cash, Donald L. Duttweiler, Hsueh-Ming Hang, Barry G. Haskell, Atul Puri   +5 more
openaire   +1 more source

Image and Video Coding Standards

2017
In this chapter, the state-of-the-art 2D and 3D image and video compression standards are described. The H.265/HEVC is the most recent transform-based video coding standard developed by the Joint Collaborative Team on Video Coding (JCT-VC). It provides a significantly improved compression performance relative to its predecessor H.264/AVC standard ...
Luís Filipe Rosário Lucas, Eduardo Antônio Barros da Silva, Sérgio Manuel Maciel de Faria, Nuno Miguel Morais Rodrigues, Carla Liberal Pagliari   +4 more
openaire   +1 more source

Reduction of blocking artifacts in image and video coding

IEEE Transactions on Circuits and Systems for Video Technology, 1999
The discrete cosine transform (DCT) is the most popular transform for image and video compression. Many international standards such as JPEG, MPEG, and H.261 are based on a block-DCT scheme. High compression ratios are obtained by discarding information about DCT coefficients that is considered to be less important.
Thomas Meier 0001, King N. Ngan, Gregory A. Crebbin   +2 more
openaire   +2 more sources

Motion based image segmentation for video coding

Proceedings., International Conference on Image Processing, 2002
A robust and stable scene segmentation is a prerequisite for the object based coding. Various approaches to this complex task have been proposed, including segmentation of optic flow, grey-level based segmentation or simple division of the scene into moving and stationary regions.
Kui Zhang, Miroslaw Bober, Josef Kittler
openaire   +2 more sources