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DCT_IDCT
to understand the Algorithm go to matlab help in page dct2 and idct2 to get the mathematical expression
for M = N = 8, we can calculate the most of hard values and save it as LUTs to speed up the execution
now compare our special 8X8 functions with the internal general functions
use this code:
A = int32(100*rand(8,8))
tic for i = 1 : 1000 IDCT_8X8(DCT_8X8(A)) end toc
tic for i = 1 : 1000 idct2(dct2(A)) end toc
i had built the general functions too, but with low speed (to understand the Algorithm go to matlab help in page dct2 and idct2 to get the mathematical expressionfor M = N = 8, we can calculate the most of hard values and save it as LUTs to speed up the executionnow compare our special 8X8 functions with the internal general functionsuse this code: A = int32 (100* rand (8,8)) tic for i = 1: 1000 IDCT_8X8 (DCT_8X8 (A)) end toc tic for i = 1: 1000 idct2 (dct2 (A)) end toc i had built the general functions too, but with low speed)
- 2007-12-05 18:28:42下载
- 积分:1
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Masterofpsychologicalinsight
心理洞察高手。讲述洞察人的内心深处的技巧,从而学会怎样与人交际。(Master of psychological insight. Insight into people hearts about the skills to learn how to communication with people.)
- 2010-12-01 20:40:29下载
- 积分:1
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autoupdate
autoupdate application
- 2014-08-09 22:24:41下载
- 积分:1
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tssrcolor120131007
用matlab实现的MSR增强算法,对低照度图像有一定的增强效果(Using matlab realize the MSR enhancement algorithms for enhanced low-light images have a certain effect)
- 2014-01-22 18:02:58下载
- 积分:1
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MATLAB7
matlab学习教程,经典 matlab学习教程,经典 matlab学习教程,经典
(matlab tutorial learning, classical learning tutorial matlab, matlab classical learning tutorial, classic)
- 2007-08-03 18:49:34下载
- 积分:1
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3
说明: 1、随机生成一个5*5矩阵A,元素符合均匀分布;再随机生成一个5*5矩阵B,元素符合正态分布。对A和B进行加、减、乘、除、比较等矩阵运算,查看运算结果。
2、创建5阶魔术矩阵,求A的行列式、特征值、逆、秩、迹、条件数。
3、假设矩阵 ,求A的LU分解、正交分解、特征值分解、奇异值分解。
4、创建6阶单位稀疏矩阵,并显示其全部元素。
(1, randomly generated a 5* 5 matrix A, elements in line with uniform distribution then randomly generated a 5* 5 matrix B, elements in line with normal distribution. Pairs of A and B to add, subtract, multiply, divide, comparison matrix operations, view the results of operations. 2, create a 5-order magic matrix, find A, determinant, eigenvalues, inverse, rank, trace, the condition number. 3, assuming that matrix, find A, LU decomposition, orthogonal decomposition, eigenvalue decomposition, singular value decomposition. 4, create a six-order unit of sparse matrix, and display all of its elements.)
- 2009-11-19 14:09:39下载
- 积分:1
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BPSK_BER_GAIN_OFDM
BPSK_BER_GAIN_OFDM
Phase Shift Keying
- 2015-04-02 01:07:32下载
- 积分:1
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Simulation_Code
导航卫星粗糙面前向散射建模,应用基尔霍夫近似法求解(Navigation Satellite rough in front of the scattering modeling)
- 2014-04-23 16:48:55下载
- 积分:1
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twentyfour
在matlab环境下, 随即生成四个数字, 并用这四个数字得出24的游戏。(twentyfour)
- 2009-03-31 00:59:54下载
- 积分:1
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unconstrained-nonlinear-
用最速下降法求解无约束非线性规划问题,最大奇异值,其梯度列向量(Using the steepest descent method solving unconstrained nonlinear programming problem)
- 2013-08-25 09:20:33下载
- 积分:1