C语言实现DCT变换编码(共14页).doc

精选优质文档-倾情为你奉上Contents1. DCT变换编码C语言2. MPEG4中逆DCT变换3. DCT变换探究4. 快速DCT变换DCT变换编码C语言#include #include #include #include #define PI 3.#define CLK_TCK CLOCKS_PER_SECint N;void DCT(double *f,double *F)int n,m,x;double *dTemp = new doubleN*N;/中间矩阵double *coff = new doubleN*N;/变换系数coff0 = 1/sqrt(N);for( m=1; mN; m+ )coffm = sqrt(2)/sqrt(N);memset( dTemp, 0, sizeof(double)*N*N );memset( F, 0, sizeof(double)*N*