搜索资源列表
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.
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
DCT-vhdl
- 这是一个二维 8*8块的离散余弦变换(DCT)以及反变换(IDCT)算法,采用VHDL实现
dct
- 小弟撰寫的多媒體影像編輯程式,包含了dct,idct,quantization,guession filter的多媒體演算法,供大家參考交流.
dct
- this si Arithmetic core,it contains FreeDCT-L and FreeDCT-M.FreeDCT-L is a low power architecture 1-Dimensional 8-point DCT/IDCT core.FreeDCT-M is a moderate speed 1-Dimensional IDCT core
DCT&IDCT变换
- 实行针对图像的DCT以及IDCT变换的源程序。-instituting image DCT and IDCT transformation of the source.
JPEG图片编解码程序
- JPEG图片编解码程序,包括读头文件和DCT,IDCT变换等等。,JPEG image codec procedures, including the first reading of documents and DCT, IDCT transform and so on.
tuxiangbianhuan.rar
- 图像变换 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,IDCT用来解压缩,Image transform to image sub-block (8* 8), for the DCT transform, and IDCT: DCT is a separable transform image to image compression coding, IDCT used to extract
project2.rar
- 数字图像处理的实验 DCT IDCT变换 灰度变换 锐化等等,Digital image processing experiments DCT IDCT transform gray-scale transformation sharpening, etc.
final
- H.264视频压缩代码中用线形汇编改写的dct、idct和quant\iquant部分-H.264 video compression using linear compilation of code to rewrite the dct, idct and part quantiquant
DCT-MATLAB
- DCT变换的实现,快速变换IDCT实现,VC工程-The realization of DCT transform, fast transform IDCT realization, VC works
TDC_3
- This is a matrixl 8 * 8 discrete cosine transform (DCT) and inverse transform (IDCT) algorithms using VHDL realiz-This is a matrixl 8* 8 discrete cosine transform (DCT) and inverse transform (IDCT) algorithms using VHDL realiz
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
mainidct0
- DCT IDCT 量子化变换DCT IDCT 量子化变换-DCT IDCT quanta
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
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
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