网站模板设计工具,宁波网络推广店,怎么创建网站 免费滴,网页设计的尺寸大小1、结构体数组的优点结构体可以存储不同的数据类型#xff0c;将他们互相联系起来。结构体数组可以连续存储多个结构体#xff0c;和数组作用相似。比如想定义同一个最小外接矩形的四个坐标值#xff0c;并给予这个矩形一个特征编号。当需要存储多个最小外接矩形的信息时将他们互相联系起来。结构体数组可以连续存储多个结构体和数组作用相似。比如想定义同一个最小外接矩形的四个坐标值并给予这个矩形一个特征编号。当需要存储多个最小外接矩形的信息时就需要动态申请一个结构体数组。
2、结构体数组的定义和使用以某一个需求为例给出了结构体数组的定义、初始化、用户交互使用、释放。
struct rect //待检测区域的结构体
{int min_x; //左上坐标int min_y;int max_x; //右下坐标int max_y;char feature; //特征编号A 泡棉 B 标签 C Logo
};
struct rect *area (rect*)malloc(sizeof(rect) * area_num); //动态申请area_num个结构体数组,存储待检测区域信息if (area NULL){printf(Fail to allocate memory to area\n);//cout Fail to allocate memory to rect1 endl;exit(1);}for (int k 0; k area_num; k)//初始化{area[k].min_x 0;area[k].max_x 0;area[k].min_y 0;area[k].max_y 0;area[k].feature 0;}printf(请依次输入待检测区域坐标和待检测的特征\n);printf(坐标为左上坐标和右下坐标特征编号为A 泡棉 B 标签 C logo 各个数据空格隔开输入\n);for (int i 0; i area_num; i){scanf(%d %d %d %d %c, area[i].min_x, area[i].min_y, area[i].max_x, area[i].max_y, area[i].feature);}
for (int i 0; i area_num; i)//循环截取判断{int rect_width area[i].max_x - area[i].min_x 1;int rect_height area[i].max_y - area[i].min_y 1;unsigned char *mindst (unsigned char*)malloc(rect_width* rect_height* sizeof(unsigned char));unsigned char *minsrc (unsigned char*)malloc(rect_width* rect_height* sizeof(unsigned char));cutout(gray2, minsrc, widths, heights, area[i] );//基准图截取cutout(dst, mindst, widths, heights, area[i] );//结果图截取printf(区域序号%d ,i);switch (area[i].feature){case A: //泡棉检测{float result_jz01;float result_jz02;result_jz01 calGLCM(minsrc, GLCM_ANGLE_VERTICAL, rect_width, rect_height);result_jz02 calGLCM(mindst, GLCM_ANGLE_VERTICAL, rect_width, rect_height);printf(一致性差值 %f\n, abs(result_jz01 - result_jz02));if (abs(result_jz01 - result_jz02) 600) //阈值可调节printf(贴泡棉\n);elseprintf(未贴泡棉\n);break;};case B: //标签检测{float result_ssim;result_ssim SSIM(minsrc, mindst, rect_width, rect_height);printf(相似性 %f\n, abs(result_ssim));if (result_ssim 0.4) //阈值可调节printf(贴标签\n);elseprintf(未贴标签\n);break;};case C: //logo检测{float result_ssim;result_ssim SSIM(minsrc, mindst, rect_width, rect_height);printf(相似性 %f\n, abs(result_ssim));if (result_ssim 0.4) //阈值可调节printf(LOGO正确\n);elseprintf(LOGO不正确\n);break;};default: printf(未输入特征类型);}free(mindst);free(minsrc);}
free(area);//一定要释放
