Question

所以我对C ++和OpenCV很陌生，我遇到了一个问题，我一遍又一遍地重复使用同一段代码。所以我想把它变成一个函数，我可以输入我的点，它会按照我输入的参数运行这个代码

所以我的问题是：我如何将下面的代码作为一个函数，其中一个函数可以用我自己的参数替换“myPoint”。所以我不需要多次复制粘贴代码

Vec3b Rightcolor = matImg.at<Vec3b>(myPoint); //defines the color at current positions
while(myPoint.x != cols){
    myPoint.x = myPoint.x +1; //extend the arrow
    int blue = Rightcolor .val[0];
    int green = Rightcolor .val[1];
    int red = Rightcolor .val[2];
    Rightcolor = matImg.at<cv::Vec3b>(myPoint); 
    if(blue == 255 && green == 255 && red == 255){
        break; //color is white at current position
    }
}
//end of function

if (m_debug) { //this draws the line in the main file
    line(matImg, bottomPoint,myPoint,cvScalar(0,0,102), 1, 8); 
}

使用我的函数进行更新，但该函数不起作用，因为它没有画线，而我的代码下面还有其他代码：

Point increase(Mat img ,Point myPoint , int cols)
{
    Vec3b rightLaneColor = img.at<Vec3b>(myPoint); 
    while(myPoint.x != cols){
        myPoint.x = myPoint.x +1; //extend the arrow
        int blue = rightLaneColor.val[0];
        int green = rightLaneColor.val[1];
        int red = rightLaneColor.val[2];
        rightLaneColor = img.at<cv::Vec3b>(myPoint); //checks for color at current position
        if(blue == 255 && green == 255 && red == 255){
            break; //color is white at current position
        }
    }
    return myPoint;
}

void LaneDetector::processImage() {
    Mat mat_img(m_image);  //IPL Is outdated 
    Mat gray;
    Mat canny; //Canny for detecting edges
    cvtColor(mat_img, grayImg, CV_BGR2GRAY); 
    Canny( grayImg, cannyImg, 50, 170, 3); 
    cvtColor(canny, mat_img, CV_GRAY2BGR);      
    cannyImg.release();

    int rows = mat_img.rows;
    int cols = mat_img.cols;

    Point bottomPoint;  /*Rightbottom  Arrow Start*/   
    Point rightPoint;  /*Right Arrow End*/

    bottomPoint.x = cols/2; 
    bottomPoint.y = 350;

    rightPoint.x = bottomPoint.x;  
    rightPoint.y = bottomPoint.y;

    /*
    Vec3b rightLaneColor = mat_img.at<Vec3b>(rightPoint); //defines the color at current positions
    while(rightPoint.x != cols){
        rightPoint.x = rightPoint.x +1; //extend the arrow
        int blue = rightLaneColor.val[0];
        int green = rightLaneColor.val[1];
        int red = rightLaneColor.val[2];
        rightLaneColor = mat_img.at<cv::Vec3b>(rightPoint); //checks for color at current position
        if(blue == 255 && green == 255 && red == 255){
            break; //color is white at current position
        }
    }
    */

    increase(mat_img,rightPoint,cols);
    if (m_debug) {
        line(mat_img, bottomPoint,rightPoint,cvScalar(80,255,12), 1,  8); 
    }
    imshow("Lanedetection", mat_img);
    cvWaitKey(10);

    //Steering instructions from here
    SteeringData sd;
    // Create container for finally sending the data.
    Container c(Container::USER_DATA_1, sd);
    // Send container.
    getConference().send(c);
}

创建功能也画线

0 个答案: