Results 21 to 30 of about 138 (118)
GPU-Based Lossless Compression of Aurora Spectral Data using Online DPCM
Remote Sensing, 2019 It is well known that aurorae have very high research value, but the data volume of aurora spectral data is very large, which brings great challenges to storage and transmission.
Jiaojiao Li, Jiaji Wu, Gwanggil Jeon
doaj +1 more source
ADPCM Using a Second-order Switched Predictor and Adaptive Quantizer
Advances in Electrical and Computer Engineering, 2011 Adaptive differential pulse code modulation (ADPCM) with forward gain-adaptive quantizer and second-order switched predictor based on correlation is presented in this article.
DESPOTOVIC, V., PERIC, Z.
doaj +1 more source
A New Frame Memory Compression Algorithm with DPCM and VLC in a 4×4 Block
EURASIP Journal on Advances in Signal Processing, 2009 Frame memory compression (FMC) is a technique to reduce memory bandwidth by compressing the video data to be stored in the frame memory. This paper proposes a new FMC algorithm integrated into an H.264 encoder that compresses a 4×4 block by ...
Yongje Lee, Yongseok Jin, Hyuk-Jae Lee
doaj +1 more source
PSNR Improvement using Different Prediction Coding in Image Compression
Tikrit Journal of Engineering Sciences, 2010 Differential Pulse Code Modulation (DPCM) is one of the predictive coding techniques. The number of previous pixels employed in the estimate operation is referred to as the order of the predictor. Predictor using one pixel for estimation is called “first
Khamies K. Hasan
doaj +1 more source
Adaptive Image Compressive Sensing Using Texture Contrast
International Journal of Digital Multimedia Broadcasting, Volume 2017, Issue 1, 2017., 2017 The traditional image Compressive Sensing (CS) conducts block‐wise sampling with the same sampling rate. However, some blocking artifacts often occur due to the varying block sparsity, leading to a low rate‐distortion performance. To suppress these blocking artifacts, we propose to adaptively sample each block according to texture features in this ...
Fang Sun +4 more
wiley +1 more source
Rate‐Distortion and Rate‐Energy‐Distortion Evaluations of Compressive‐Sensing Video Coding
International Journal of Digital Multimedia Broadcasting, Volume 2017, Issue 1, 2017., 2017 Compressive‐Sensing Video Coding (CSVC) is a new video coding framework based on compressive‐sensing (CS) theory. This paper presents the evaluations on rate‐distortion performance and rate‐energy‐distortion performance of CSVC by comparing it with the popular hybrid video coding standard H.264 and distributed video coding (DVC) system DISCOVER ...
Bingyu Ji +3 more
wiley +1 more source
Variable‐Rate Texture Compression: Real‐Time Rendering with JPEG
Computer Graphics Forum, EarlyView.Abstract Although variable‐rate compressed image formats such as JPEG are widely used to efficiently encode images, they have not found their way into real‐time rendering due to special requirements such as random access to individual texels. In this paper, we investigate the feasibility of variable‐rate texture compression on modern GPUs using the ...
Elias Kristmann +2 more
wiley +1 more source
Further investigation on adaptive search
The Journal of Engineering, Volume 2014, Issue 5, Page 238-247, May 2014., 2014 Adaptive search is one of the fastest fractal compression algorithms and has gained great success in many industrial applications. By substituting the luminance offset by the range block mean, the authors create a completely new version for both the encoding and decoding algorithms.
Ming Hong Pi +3 more
wiley +1 more source
Spectral Distortion in Lossy Compression of Hyperspectral Data
Journal of Electrical and Computer Engineering, 2012 Distortion allocation varying with wavelength in lossy compression of hyperspectral imagery is investigated, with the aim of minimizing the spectral distortion between original and decompressed data.
Bruno Aiazzi +4 more
doaj +1 more source
Edge-Based and Prediction-Based Transformations for Lossless Image Compression
Journal of Imaging, 2018 Pixelated images are used to transmit data between computing devices that have cameras and screens. Significant compression of pixelated images has been achieved by an “edge-based transformation and entropy coding” (ETEC) algorithm recently ...
Md. Ahasan Kabir +1 more
doaj +1 more source