-
DCT-and-Image-Compression
DCT and Image Compression
In the JPEG image compression algorithm, the input image is divided into
8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each
block. The DCT coefficients are then quantized, coded, and transmitted. The
JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients,
computes the inverse two-dimensional DCT of each block, and then puts the
blocks back together into a single image. For typical images, many of the
DCT coefficients have values close to zero these coefficients can be discarded
without seriously affecting the quality of the reconstructed image.
The example code below computes the two-dimensional DCT of 8-by-8 blocks
in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients
in each block, and then reconstructs the image using the two-dimensional
inverse DCT of each block. The transform matrix computation method is used.
- 2014-01-28 16:55:07下载
- 积分：1
-
daima
基于导频的ofdm系统的LS估计MMSE估计 (Pilot-based OFDM system, the LS estimate of the MMSE estimates)
- 2008-05-07 14:35:00下载
- 积分：1
-
yankebingchuang2
此算法先把伤病人员进行特殊对待，在计算出其他人的入院日期，表二的出院日期为 统计的期望值
运用是要改变 数据的初值 和u值（数据录入个数）；(This algorithm first special treat the sick and wounded, in the calculation of other people' s admission date, discharge date in Table II used for the statistical expectation is to change the initial data and u values (the number of data entry) )
- 2011-07-25 19:01:05下载
- 积分：1
-
recommend
解决地震信号反卷积的相关问题，这可以但做一个模板，大家可以往里面套用,非常使用！(Seismic signal deconvolution to resolve issues related to, but it can make a template, we can fill it applied very use!)
- 2011-10-17 20:19:29下载
- 积分：1
-
OCR
matlab code for Optical Character Recognition (OCR)
- 2015-02-03 16:00:02下载
- 积分：1
-
dim7by7.m
this is a code for square detect in image using transform
- 2010-02-26 19:55:19下载
- 积分：1
-
mat2tiles
breaks up an array into a cell array of adjacent sub-arrays of equal sizes
- 2021-03-11 16:59:25下载
- 积分：1
-
harada
It contains the source code for the OFDM simulation in different types of fading environment and under different schemes ike bpsk, gmsk, msk, etc.Also it contains the transmitter design for the OFDM
- 2010-10-28 12:26:09下载
- 积分：1
-
matlab
matlab的很多图像处理的实用程序，如图像区域处理、图像颜色处置等.(matlab image processing a lot of utilities, such as image region processing, image color disposal.)
- 2010-12-01 21:08:43下载
- 积分：1
-
pthotoww
MATLAB中，一幅图像可能包含一个数据矩阵，也可能包含一个颜色映射表矩阵。
(MATLAB, an image may contain a data matrix. may also include a matrix color mapping table.)
- 2007-04-26 09:10:45下载
- 积分：1
