搜索结果: 1-15 共查到“计算机科学技术 Block”相关记录15条 . 查询时间(0.049 秒)
Block splitting for large-scale distributed learning
Machine statistics data sets convex optimization the model data collection processing machine
2015/8/7
Machine learning and statistics with very large datasets is now a topic of widespread interest, both in academia and industry. Many such tasks can be posed as convex optimization problems, so algorith...
MANAGING THE GLOBAL DATASET IN BLOCK-INDEX BASED ON ESSG
SDOG ESSG Global Scale Raster Data
2014/4/21
Earth observation system, which can realize global coverage in three dimensions, has provided massive data from earth observations
at global scale for Earth System Science (ESS) and global change re...
A Novel Macro-Block Group Scheme of AVS Coding for Many-Core Processor
parallel video encoding macro-block group many-core processor
2013/7/16
The slice-level parallelism is popular in parallel video coding. However, the quality loses greatly because the dependency between macroblocks is broken, especially on many-core platforms. To address...
Block Adaptive Super Resolution Video Coding
Super-resolution interpolation rate-distortion cost
2013/7/16
Super resolution technique was first proposed for enhancing the image resolution, and then it was expanded to video sequence for obtaining a higher resolution video from low resolution input. Recently...
基于Block-SVD的小波域彩色图像数字水印算法
Arnold变换 分块奇异值分解 离散小波变换
2009/7/21
提出了一种基于Arnold变换和分块奇异值分解（Block-SVD）的小波域彩色图像数字水印算法。该算法采用彩色图像作为载体，灰度图像作为水印，增加了嵌入的信息量。仿真结果表明，该算法具有时间效率高、水印不可见性好、抗攻击能力强等特点，在版权保护方面具有一定的应用价值。
基于MCM的block-DCT域盲隐写分析算法
隐写分析 经验转移矩 隐马尔可夫
2009/7/21
针对block-DCT域隐写，基于马尔可夫链模型（Markov Chain Model，MCM），提出了一种新的盲隐写分析算法。该算法分析研究了DCT系数的分布特点和统计特征，采用隐马尔可夫树（Hiding Markov Tree Mode，HMT）模型，实现了载体图像的预测；基于MCM构建二阶马尔可夫经验转移矩模型，捕捉块内和块间DCT系数的相关性，提取经验转移矩阵对角元素作为特征向量，构建特征...
一种针对BLOCK-DCT隐写的隐写分析改进算法
BLOCK-DCT 隐写 隐写分析
2009/6/25
由于BLOCK-DCT隐写算法对平稳性质的原始图像引入了非平稳性，使得隐写图像块内部的相邻像素对与块之间的像素对的分布存在着差异。而在未嵌入消息的原始图像中它们的分布是一致的。由此利用Kolomogrov-smirnov test(k-s test)去判定图像是否隐藏信息.可是采用4邻域象素对的直接象素差的分布，在k-s test中并不怎么理想，两类概率分布之差的上界D都比较小。我们通过引入差的绝...
Watermarking Algorithm Research and Implementation Based on DCT Block
Digital Watermark DCT Direct Current Component JPEG
2010/2/2
In this paper the watermarking programs based on the
discrete cosine transform (DCT) domain DC component (DC) is
adopted. Through adjusting the block DCT coefficient of the image the
watermarks are...
FBDVerifier: Interactive and Visual Analysis of Counterexample in Formal Verification of Function Block Diagram
Function Block Diagram Formal Verification Counter-example Visualization Verilog Translation Programmable Logic Controller Model Checking
2014/3/11
Model checking is often applied to verify safety-critical software implemented in programmable logic controller (PLC) language such as a function block diagram (FBD). Counter-examples generated by a m...
AbstractIn analog VLSI design, 2-dimensional symmetry stack and block merging are critical for mismatch minimization and parasitic control. In this paper, algorithms for analog VLSI 2-dimensional symm...
数据不规则问题全相关Block递归方程组多维流水线并行技术研究
数据不规则问题 流水线并行计算 流水关系有向图
国家“八六三”高技术研究发展计划项目基金(2003AA723042)和国家自然科学基金(10072077)资助
2007/11/1
主要讨论数据不规则问题全相关Block递归方程组多维流水线并行的实现.首先给出全相关Block递归方程组的模型方程，并从图论的角度给出了流水关系有向图的定义以及流水线并行条件的判别准则，分析了影响流水线并行效率的主要因素.在此基础上，提出一种基于流水关系有向图的流水线并行实现算法并应用于数据不规则问题.实验结果表明该方法在复杂区域情况下也可以取得较高的效率.
一类基于FSP问题Block性质的快速TS算法
流水线调度问题
禁忌搜索
Block性质
2007/8/27
Abstract为解决现有算法在求解大规模流水线调度问题(FSP)时计算时间过长的问题,从缩小邻域的角度出发,提出一种基于FSP问题Block 性质的快速禁忌搜索(TS)算法.利用Block 性质,算法在保证不丢失最优解的基础上,将邻域中大部分劣解排除,将搜索重点集中在邻域中“最优希望”的区域,以缩小邻域和减少计算时间.数值仿真实验表明,该算法能在较短时间内获得大规模FSP问题的满意解.
期刊信息
篇名
A New Performance Enhancement Algorithm for Space-Time Block Coding in OFDM Systems
语种
英文
撰写或编译
作者
Kai Xu*,Tao Luo,Changchuan Yin,Guangxin Yue
第一作者单位
刊物名称
The Journal of China Universities of ...
Improved FFSBM Algorithm and Its VLSI Architecture for Variable Block Size Motion Estimation of H.264
FFSBM Algorithm VLSI Architecture Variable Block Size Motion Estimation
2010/12/15
The video coding standard H.264/AVC has adopted variable block size motion estimation to improve coding efficiency, which has brought heavy computation burden.The FFSBM (fast full search block matchin...
Fast Block-Based True Motion Estimation Using Distance Dependent Thresholds
Fast Block-Based True Motion Estimation Distance Dependent Thresholds
2014/3/12
Afast motion estimation algorithm, called distance-dependent thresholding search(DTS), is presented for block-based true motion estimation applications, and introduces the novel concept of variable di...