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SaveJPEG
- 提示: JPEG压缩分为三个部分: 1.JPEG压缩原理及算法(RGB/YCbCr,DCT/IDCT,量化,Z字型编码,用DPCM对DC/用RLE对AC编码/Huffman编码) 2.JPEG标记格式 3.JPEG图片文件的组织形式(位于SOS后的图像压缩数据是由MCU块怎样排列的,特别是使用了DRI之后) 还有许多细节问题: 1.解码过程中遇到“FF 00”当“FF”处理,否则忽略“FF” 2.进行DCT前YCbCr要减128,进行IDCT前要加128(相当于Y减128,YCbCr不需要加12
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算法实现
- 普通DCT,快速DCT,快速IDCT算法的实现 vc程序 希望你喜欢!-ordinary DCT, fast DCT and IDCT algorithm for the rapid realization vc procedures hope you like!
图像dct变换的程序
- 对原始灰度图像 Lena_gray.bmp进行图像压缩实验 1.对此图进行 8×8 DCT 变换后,分别只保留 DC系数,以及保留前 4、8、16 个变换系数(DC+AC) ,然后再分别进行 IDCT 变换,比较结果。 2.可以使用 Matlab - Image Processing Toolbox 中的函数实现。 -gray image of the original image compression Lena_gray.bmp an experiment. This diagr
35647
- 4x4的不必采用dct/idct变换,H.264代码也好用。我在这也照着公式写了一个,也能用-4x4 without using the Copy / idct transform, or use H.264 code. I also wrote a shining on a formula also can be used
fpgaJPEGdcode
- 基于fpga的JPEG编解码器设计,采用流水线优化解决时间并行性问题,提高DCT/IDCT模块的运行速度。-based fpga JPEG codec design, the flow of time to solve optimization problems in parallel, enhance DCT / IDCT module of the operating speed.
idct
- 这段程序是前面dct程序嵌入的逆过程,即进行信息的提取,从而获得置乱原始信息-Dct in front of this program is the reverse process of embedding process, namely, the extraction of information, thereby scrambling the original information obtained
DCTPROGRAM.ZIP
- it is verilog code for two dimentional dct
attachments_2010_01_29
- dct and idct vhdl code
dip4
- 对原始灰度图像进行图像压缩,对此图进行 8×8 DCT 变换后,分别只保留 DC系数,以及保留前 4、8、16 个变换系数(DC+AC) ,然后再分别进行 IDCT 变换 -The original gray image compression, this map for 8 × 8 DCT transform, respectively, to retain only the DC coefficient, and to retain the former 4,8,16 months tr
DCT
- 读入一幅256*256图像,将它分成8*8pixel的若干块,对每块做DCT变换,保留Z型顺序的若干变换系数,进行IDCT重构图像,计算重构图像的信噪比-Reading a 256* 256 image, it will be divided into several blocks of 8*8 pixel, keep each optimal Z transformation of sequence number, IDCT transform coefficient calculation
593IDCT
- dct变换与dct逆变换,程序可以直接运行,代码中有详细注释,容易理解。-dct dct transform and inverse transform, the program can run the code in detail in notes, easy to understand.
FreqCalculate
- 各种变换:// FFT() - 一维快速付立叶变换 // IFFT() - 一维快速付立叶逆变换 // Fourier() - 二维快速傅立叶变换 // IFourier() - 二维快速傅立叶逆变换 // DCT() - 一维快速离散余弦变换 // IDCT() - 一维快速离散余弦逆变换 // FreqDCT() - 二维快速离散余弦变换 // IFreqDCT() - 二维快速离散余弦逆变换,图象的二维离散小波变换-Var
DCT_IDCT
- verilog code for DCT and IDCT (JPEG)
mirt_dctn
- steganography dct image algorithm. very useful for implementing dct and idct concepts in matlab-steganography dct image algorithm. very useful for implementing dct and idct concepts in matlab......
DCT_IDCT
- H264/AVS中的离散余弦变换DCT以及反离散余弦变换IDCT的Verilog代码-H264/AVS the discrete cosine transform and inverse discrete cosine transform DCT IDCT of Verilog code
MATLAB-dct-and-idct
- 将图片进行8*8块的dct变换,以及8*8块的反变化恢复原图像-use 8*8 block dct to chang image, and use 8*8 block idct to renew image.
DCT
- 图像压缩。对图像进行DCT变换。 取灰度图,DCT,IDCT。-Discrete Cosine Transform of an image
DCT-Picture-Handler
- DCT,IDCT实例,可以学习下DCT对图片的处理相关工作,VC++源码-DCT, IDCT instance, can learn DCT for image processing-related work, VC++ source
idct16psk
- generate mimo-ofdm using dct and idct matlab source code