- 371 名前：デフォルトの名無しさん [2006/10/19(木) 17:24:59 ]
- /* 画素データ取り込み */
for(i=0;i<ras.ras_height;i++){
for(j=0;j<ras.ras_width;j++){
/* B → G → R(24bit) */
fread(&B[i][j],sizeof(unsigned char),1,fp1);
fread(&G[i][j],sizeof(unsigned char),1,fp1);
fread(&R[i][j],sizeof(unsigned char),1,fp1);
}
}
/*線形補間法*/
for(i=0;i<height;i++){
for(j=0;j<width;j++){
nt = floor(i/bai);
nn = floor(j/bai);
p = i/bai - nt;
q = j/bai - nn;
r[i][j] = R[(unsigned char)nt][(unsigned char)nn]*(1-p)*(1-q)+R[(unsigned char)(nt+1)][(unsigned char)nn]*p*(1-q)
+R[(unsigned char)nt][(unsigned char)(nn+1)]*(1-p)*q+R[(unsigned char)(nt+1)][(unsigned char)(nn+1)]*p*q;
g[i][j] = G[(unsigned char)nt][(unsigned char)nn]*(1-p)*(1-q)+G[(unsigned char)(nt+1)][(unsigned char)nn]*p*(1-q)
+G[(unsigned char)nt][(unsigned char)(nn+1)]*(1-p)*q+G[(unsigned char)(nt+1)][(unsigned char)(nn+1)]*p*q;
b[i][j] = B[(unsigned char)nt][(unsigned char)nn]*(1-p)*(1-q)+B[(unsigned char)(nt+1)][(unsigned char)nn]*p*(1-q)
+B[(unsigned char)nt][(unsigned char)(nn+1)]*(1-p)*q+B[(unsigned char)(nt+1)][(unsigned char)(nn+1)]*p*q;
}
}
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