搜索资源列表
2DCT_v1_1_0
- 2维DCT变换的matlab程序,要下载个东东,请站长开通我的账号-2DCT transfer by matlab
imjepg
- JPEG压缩编码的主要步骤有: 1.通过前向离散余弦变换减少图像数据相关性; 2.利用人眼的视觉特性队DCT系数进行量化; 3.使用查分脉冲编码调制对直流系数进行编码; 4.对交流系数进行Z形扫描,使用形成长度编码队交流系数进行编码; 5.熵编码器对上述描述符进行熵编码。-JPEG compression encoding of the main steps are: 1.forward discrete cosine transform to reduce the im
jpegyasuo
- 实现JPEG的压缩和编码 (1)首先通过DCT变换去除数据冗余; (2)使用量化表对DCT系数进行量化; (3)对量化后的系数进行Huffman编码。 -Achieve JPEG compression and coding of the DCT (1) First remove the data redundancy (2) Use the quantization tables for DCT coefficients to quantify (3) Huffman c
jpeg_hardware.tar
- 用FPGA实现的JPEG压缩器,可以直接使用,内含完整文档说明-This project features a complete JPEG Hardware Compressor (standard Baseline DCT, JFIF header) with 2:1:1 subsampling, able to compress at a rate of up to 24 images per second at the maximum resolution 352x288 (on XC2V
svddct
- 2维图像添加数字水印信息。算法DCT-SVD。嵌入二值水印信息-Add watermark to the host image. DCT-SVD
shift_arr
- This contains the shift array which can be used in 2D DCT with help of 2 1D DCTs.
CS_Primary_tutorial
- CS压缩传感的初级教学代码,使用OMP重构,已注释,包括1维信号,2维图像的重构,分别使用dct和小波稀疏,列扫描和分块法进行omp重构-CS compressed sensing primary teaching code using OMP remodeling, already commented, including a 1-dimensional signals, 2-dimensional image reconstruction, respectively, using the D
tuxiangyasuo
- (1)试利用函数dct2,对该图像进行压缩。压缩时可尝试对DCT 变换后的系数采用不同取舍方法,比较其压缩性能。(函数dct2在matlab本身是有的,可以help dct2看看) (2)结合课本例8.7.2 的量化方法,对每一个经DCT变换后的8×8 矩阵量化(Huffman编码部分可省略),从而实现图像压缩。在一定压缩比的情况下,和⑴给出的图像质量相比较。 (3)用所给的子子程序fast_LOT.m 实现对该图像的变换与压缩,并和(1)得出的图像质量相比较-(1) Test usin
INT_DCT
- Verilog HDL语言实现的整数DCT变换模块。其中包括一维和两维的DCT变换模块各一个。该模块都通过硬件仿真以及FPGA实现后的测试,均满足预期的DCT变换功能。-Integer DCT transfer module with Verilog HDL format. The package includes one 1-D and one 2-D DCT transfer module, which all pass simulation and FPGA evaluation.
JPEG_BaseLine_Encoder
- The JPEG compression scheme is divided into the following stages: 1. Transform the image into an optimal color space. 2. Adjust Aspect Ratio 16:9 3. Digitization Scheme 4:2:0. 4. Apply a Discrete Cosine Transform (DCT) to blocks of pixels
shuzituxiangchuli
- 用matlab编程工具,编写具有操作界面的应用程序,通过菜单、对话框,选项框等界面控制,对算法进行演示。需要在应用系统中实现的算法及功能包括: 1、图像增强算法 (1)灰度线形变换:亮度及对比度可以调节(通过控制参数的改变,能够实时预览变化结果); (2)直方图均衡:可在界面上对比均衡前后的效果。 2、图像变换算法 (3)对一幅彩色图像进行DCT变换和反变换,对比结果和原图; (4)仅保留左上角16X16的DCT系数,进行反变换,计算结果图的信噪比SNR。 3、图像分
Chapter-10
- 10.2 色度空间转换CSC设计实例 10.3 离散余弦变换DCT设计实例 10.4 量化取整QNR设计实例 10.5 哈夫曼编码huffman_enc设计实例-Color space conversion 10.2 10.3 CSC design examples design examples of discrete cosine transform DCT quantization rounding QNR 10.4 10.5 Huffman huffman_enc desi
batch-omp
- KSVDBox - Implementation of the K-SVD and K-SVD denoise algorithms.-K-SVD dictionary training. ksvd - K-SVD dictionary training. Signal denoising. ompdenoise - OMP denoising. ompdenoise1 - OMP denoising of 1-D signals.
matlab
- 基于DCT数字水印算法的Matlab实现源代码,1. 将文字水印和图像水印转换为二值序列水印; 2. 对水印进行置乱,提高其安全性; 3. 选择合适大小的块,给出DCT域中频分块编码方案;-DCT-based digital watermarking algorithm Matlab source code, a text watermark and image watermark converted into a binary sequence watermark .. 2 wa
image
- 系统能读取不同图像,保存处理后的图像; 2. 直方图均衡化; 3. 对图像进行FFT和DCT变换; 4. 对图像添加高斯噪声,进行均值降噪(图像数目可设置); 5. 对图像进行频域增强(可选一种滤波器对图像平滑或者锐化都行); 6. 采用阈值法对图像进行二值化;(阈值可设置) -he system can read different image, save the image after processing 2 histogram equalization
TransformCFortran
- Radix-2 and Kronecker Product RFFT, DST and DCT ... Routines for any number of data points are provided. The 21 programs are grouped as C and Fortran programs. The programs were compiled and tested under Sun Solaris, Microsoft Fortran Power Statio
test_dct
- 2D-DCT变换是视频压缩中的常用变换[2]。在压缩过程中,将一幅图像分成许多4*4的小块进行变换。-2D-DCT transform is often used in video compression transformation [2]. In the compression process, an image is divided into many small blocks of 4* 4 transform.
Vc6_Image
- VC++图像处理及源码包(大全)包括下列内容:1.数字图像获取,处理及实践应用电子书 2.数字图像获取,处理及实践应用电子书分章节源码 3.书中提及的各种算法的综合源码。压缩包里面包括的算法代码有:分章节源码内容:内容:对比度增强、灰度变换法、直方图修整法、图像平滑、图像锐化、伪彩色和假彩色增强;逆滤波复原、维纳滤波方法;傅立叶变换、离散余弦变换(DCT)、沃尔什变换、基于特征向量的变换、霍特林(Hotelling)变换、SVD变换、小波变换、Mallat算法;霍夫曼(Huffman)编码、算术
Image-Compression
- DCT变换1、 提取彩色图像,将图像大小限制为512* 3; 2、 提取彩色图像三个颜色分量的矩阵,每个矩阵单独处理; 3、 将矩阵分为8*8的块,做DCT变换; 4、 提取每个块的一部分DCT系数做IDCT变换,显示基本图像; 5、 再提取每个块的一部分DCT系数做DCT反变换,得到增强层1,与前一次得到的数据叠加,得到质量更好的图像。 -DCT transform
progams_matlab_dip
- 1.Perform colour image segmentation and pseudo coloring on gray image 2.Import two images and perform Image Addition, subtraction,Image multiplication,division,blending 3.To perform logical and morphological operations 4.To perform DCT and quan