Results 41 to 50 of about 2,705,238 (250)

Cryptanalysis of an MPEG-Video Encryption Scheme Based on Secret Huffman Tables [PDF]

, 2007
This paper studies the security of a recently-proposed MPEG-video encryption scheme based on secret Huffman tables. Our cryptanalysis shows that: 1) the key space of the encryption scheme is not sufficiently large against divide-and-conquer (DAC) attack ...
A. Uhl, B. Bhargava, B. Schneier, C.P. Wu, G. Jakimoski, J. Wen, J. Zhou, L. Qiao, M.S. Kankanhalli, W. Zeng, Y. Mao   +10 more
core   +3 more sources

Holocene sea‐level and environmental changes on the Isle of Mull, Scotland

Journal of Quaternary Science, EarlyView.
ABSTRACT Sea‐level and coastal changes are reconstructed on the Isle of Mull, western Scotland, from 10 988 to 10 507 cal BP to the present. This research has produced the first SLIP for the Isle of Mull. A multiproxy approach including pollen, spore, foraminifera and diatom analyses reveals palaeoenvironmental changes from two coastal sites.
Katherine A. Selby, Jane Wheeler, William E. N. Austin, Heather Austin, Tom Hill, Sarah L. Bradley, Sally Derrett   +6 more
wiley   +1 more source

An Efficient and Fast VLIW Compression Scheme for Stream Processor

IEEE Access, 2020
Stream processor has been widely used in multimedia processing because of the high performance gained by parallelism. In order to achieve higher parallelism, the stream processor employs large width structure of VLIW (very long instruction word, VLIW ...
Gongli Li, Yingying Hou, Junzhe Zhu
doaj   +1 more source

Research and Implementation of 12-bit Image Compression Based on M Coder [PDF]

Jisuanji gongcheng, 2016
In order to further improve the compression ratio of 12-bit static image,a static image compression scheme based on M encoder is presented.On the basis of JPEG standard coding framework,the 12-bit gray image quantization table is added in this ...
XU Nini,HE Xiaotong,XU Shiyin
doaj   +1 more source

The role of soil moisture in the inland penetration of Indian monsoon low‐pressure systems

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We use the Advanced Weather Research and Forecasting model to examine the role of soil moisture in the inland penetration of Indian monsoon low‐pressure systems (LPSs). We find that LPSs penetrate deeply into India despite a dry land surface; however, their inland penetration is adversely affected when there is a reduction in the total surface heat ...
Akshay Deoras, Kieran M. R. Hunt, Andrew G. Turner   +2 more
wiley   +1 more source

Source Coding for Quasiarithmetic Penalties

, 2006
Huffman coding finds a prefix code that minimizes mean codeword length for a given probability distribution over a finite number of items. Campbell generalized the Huffman problem to a family of problems in which the goal is to minimize not mean codeword
Baer, Michael B.
core   +4 more sources

Thermodynamic and microphysical properties of summertime marine fog observed from Sable Island

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Atmospheric profiling and near‐surface fog and visibility measurements revealed synoptic‐scale forcing as the dominant factor in fog formation over Sable Island, with deep fog layers under low‐pressure systems and shallow fog layers under high‐pressure systems.
Kelsey Rowe, Jesus Ruiz‐Plancarte, Ryan Yamaguchi, David Ortiz‐Suslow, Eric Pardyjak, Ismail Gultepe, Harindra J. S. Fernando, Qing Wang   +7 more
wiley   +1 more source

Approximating Huffman Codes in Parallel

Journal of Discrete Algorithms, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Berman, P., Karpinski, M., Nekrich, Y.
openaire   +2 more sources

Robust steganographic framework for securing sensitive healthcare data of telemedicine using convolutional neural network

CAAI Transactions on Intelligence Technology, EarlyView.
Abstract Data is the key element that runs the modern society. Large amounts of data are being released day by day as a result of many activities. The digital data is transferred through the Internet which may be vulnerable to attacks while transmitting. Especially, the medical data is observed to be of at most importance.
Rupa Ch, Venkayya Yadlapalli, Suhana Sulthana Sk, G. Thippa Reddy, Sandeep Kautish   +4 more
wiley   +1 more source

A Low-Complexity Lossless Compression Method Based on a Code Table for Infrared Images

Applied Sciences
Traditional JPEG series image compression algorithms have limitations in speed. To improve the storage and transmission of 14-bit/pixel images acquired by infrared line-scan detectors, a novel method is introduced for achieving high-speed and highly ...
Yaohua Zhu, Mingsheng Huang, Yanghang Zhu, Yong Zhang   +3 more
doaj   +1 more source