搜索资源列表
DIP程序
- 以前的数字图像处理作业,包括直方图,均衡,Sobel,中值,FFT,IFFT,DCT,IDCT,8*8DCT等-previous digital image processing operations, including the histogram, balanced and Sobel, values, FFT, IFFT, DCT, IDCT, 8 * 8DCT etc.
dct_p
- 这是用VHDL语言(硬件描述语言)写的一个二维 8*8块的离散余弦变换(DCT)以及反变换(IDCT).全同步设计,低门数.可以用于多媒体及打印应用领域.-VHDL (hardware descr iption language) wrote a two-dimensional 8 * 8 discrete cosine transform (D CT) and the anti-transform (IDCT). fully synchronous design, low gate cou
VC_ImageProcessing
- 《Visual C++数字图像获取、处理及实践应用》杨枝灵、王开等编著。内容:第4章 图像增强(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);第5章 图像复原(逆滤波复原、维纳滤波方法);第6章 图像处理中的正交变换(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);第7章 图像压缩编码(霍夫曼(Huffman)编码、算术编码、游程编码(Run Length Codin
dct_jpeg
- jpeg中DCT变换程序。为前向DCT的浮点运算,它要比整数运算更精确。该程序只适用于8×8的块变换。-jpeg DCT transformation procedure. For front to the DCT floating point calculation, it must be more precise than the integer operation. This procedure is only suitable for 8脳8 block transformati
BMP_DCT_IDCT
- 本源码是用VC++6.0实现的,显示了BMP位图,并实现了快速的8*8的块的DCT和IDCT变换-the source of VC 6.0, showing a bitmap BMP, and achieve a rapid 8 * 8 block of DCT and IDCT transform
ImagesharpeningImageTransform
- Sobel算子:是一种空域微分算子,可以通过它锐化图象。 将图象分块(8*8),作DCT变换,并作IDCT:DCT是一种可分离图象变换,用来图象压缩编码。-Sobel Operator : airspace is a differential operator, through its image sharpening. Image will block (8 * 8), for the DCT and IDCT for : DCT is a separable Image Transfor
picmfc
- 能进行8*8的快速DCT变换并反变换,显示变换前和变换后的图象。可自由选择保留几个DCT变换后的系数
dm_dct_fenkuai
- 在DCT域,利用8*8分块DM方法,嵌入隐藏信息。可设置量化步长、选择各种经典的攻击方式和控制攻击强弱。返回误码率和峰值信噪比。利用Matlab编写。
matlabcompress
- 使用二维离散余弦变换(DCT)进行图象压缩。原始图象被转换成为8*8大小的块进行压缩和重构。 Cnum:为压缩时保留的系数的个数 MSM:均方误差压缩应该做到在最合理的近似原图象的情况下使用最少的系数。函数:dctmtx:返回一个n*n阶DCT变换 blkproc:对图象进行不同的块处理。 im2col:重排图象块为矩阵列。注意:只适用于灰度图象。
FoundDCT
- 簡單的8*8 DCT(Discrete Cosine Transform)
DCT-a-Hamming-coding
- 1.DCT变换,对整个图像的直接DCT变换和分块为8*8做DCT变换,并设定阈值。 2.汉明编码(7,4),译码以及找出错误图样和纠错。并在不同的转移概率的BSC道下进行传输。-DCT:Direct DCT and IDCT,blocking. hamming coding:decoding and picking up errors.
DCT
- 将一个512×512的lena.bmp图像进行DCT变换,对得到的DCT系数按8×8块进行分层(分三层),重组填充得到新的系数矩阵,结果发现原图像的能量集中在了新图像的左上角低频部分。-The lena.bmp an image of 512 × 512 is subjected to DCT transform, the DCT coefficients obtained by layering 8 × 8 block (of three), to obtain a new recombina
10.-Converting-an-image-into-blocks-of-8-x-8-and-
- Converting an image into blocks of 8 x 8 and apply DCT on any one of the blocks
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 trans
DCT
- iii) Discrete Cosine Transform The transform of a signal is just another form of representing the signal. It does not change the information content present in the signal. Discrete cosine transform is widely used in image and video compression appl
DCT
- 1、针对图像,按8*8块,进行DCT,对比不同有效系数(1、3、10、36)下重建质量,给出有效系数下的MSE误差曲线; 2、给出对应的基图像(64个8*8图像)。-Compare the quality of different effective reconstruction coefficient (1,3,10,36), the MSE error curve is given under the effective coefficient 2, to give
DCT-transform-of-the-image
- 对cameraman.tif图像进行DCT变换,分别选取最大的1/4、1/8、1/16个变换系数(其余置为0),进行反DCT得到重构图像,显示原图像和各重构图像并分别计算重构图像的峰值信噪比。-Cameraman.tif DCT transform of the image, were selected maximum 1/4,1/8,1/16 transform coefficients (the remainder is set to 0), inverse DCT to obtain th
PicCompressEncode
- DCT效应-保留DC及前8个AC,在C#平台上制作表格显示(DCT effect - retains the DC and the first 8 AC, and produces tabular displays on the C# platform)
DFT_DCT
- 对图像进行8*8DCT变换后保留前六条对角线上系数并进行反变换。 不使用MATLAB自带工具包进行DFT变换。(8*8 DCT transform of a image)
DFT&DCT
- 编程实现二维8*8图像块的DFT,DCT变换 输入一副RGB图像,将其转化为YCbCr颜色空间,然后对Y分量做分块DFT变换,保存为灰度图像,统计计算时间 编程实现8*8块DCT变换,然后分别显示,当使用64个DCT系数里面的一些系数进行重构,比较其质量;同时熟悉采用FFT来实现DCT变换的思想,并显示2维8*8DCT变换的基函数图像(Programming the DFT, DCT transform of two dimensional 8*8 image block Input