HW03

BUG:
  將code
if( (logoImg->height + y1) < mergeImg->height) {
mergeImg=cvCloneImage(pImg);
for (int y=0; y<logoImg->height; y++) {
uchar* ptr1=(uchar*) (logoImg->imageData +y*logoImg->widthStep);
uchar* ptr2=(uchar*) (mergeImg->imageData +(y+y1)*mergeImg->widthStep);
for (int x=0; x<logoImg->width; x++) {
ptr2[3*(x+x1)]=alpha*ptr1[3*(x)] + (1-alpha)*ptr2[3*(x+x1)];
ptr2[3*(x+x1)+1]=alpha*ptr1[3*(x+x1)+1] + (1-alpha)*ptr2[3*(x+x1)+1];
ptr2[3*(x+x1)+2]=alpha*ptr1[3*(x+x1)+2] + (1-alpha)*ptr2[3*(x+x1)+2];
}
}
}


改成
if( (logoImg->height + y1) < mergeImg->height) {
mergeImg=cvCloneImage(pImg);
for (int y=0; y<logoImg->height; y++) {
uchar* ptr1=(uchar*) (logoImg->imageData +y*logoImg->widthStep);
uchar* ptr2=(uchar*) (mergeImg->imageData +(y+y1)*mergeImg->widthStep);
for (int x=0; x<logoImg->width; x++) {
ptr2[3*(x+x1)]=alpha*ptr1[3*(x)] + (1-alpha)*ptr2[3*(x+x1)];
ptr2[3*(x+x1)+1]=alpha*ptr1[3*(x)+1] + (1-alpha)*ptr2[3*(x+x1)+1];
ptr2[3*(x+x1)+2]=alpha*ptr1[3*(x)+2] + (1-alpha)*ptr2[3*(x+x1)+2];
}
}
}
 

這次的作業是顯示出BGR不同的影像，將LOGO也放出來，真的超好玩!!