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  • OpenCV_Add方法

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     1  //ROI的蓝色通道增加150灰度值效果
    2 IplImage* src;
    3 if((src=cvLoadImage("fruit.jpg",1))!=0)
    4 {
    5 int x=10;
    6 int y=20;
    7 int width=50;
    8 int height=100;
    9 int add=150;
    10 cvSetImageROI(src,cvRect(x,y,width,height));
    11 cvAddS(src,cvScalar(add),src);
    12 cvResetImageROI(src);
    13 cvNamedWindow("roi_add",1);
    14 cvShowImage("roi_add",src);
    15
    16
    17 }
    18
    19 //addweighted函数调用
    20 IplImage *src1,*src2,*dst;
    21
    22 if((src1=cvLoadImage("zl.jpg"))!=0&&(src2=cvLoadImage("w.jpg"))!=0)
    23 {
    24 int x1 = 685;
    25 int y1 = 250;
    26 int x2=315;
    27 int y2=230;
    28
    29 double alpha=0.2f;
    30 double beta=0.8f;
    31
    32 cvNamedWindow("src1",1);
    33 cvSetImageROI(src1,cvRect(x1,y1,200,200));
    34 cvSetImageROI(src2,cvRect(x2,y2,200,200));
    35 cvNamedWindow("alpha_blend",1);
    36 cvShowImage("src1",src1);
    37 cvAddWeighted(src1,alpha,src2,beta,0.0,src1);
    38 cvShowImage("alpha_blend",src1);
    39 cvWaitKey();
    40
    41 }

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  • 原文地址:https://www.cnblogs.com/slysky/p/2196595.html
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