EmguCV-第11讲-ROI与mask掩码_emgucv roi

1 ROI

2 mask掩码

3 代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Emgu.CV;
using Emgu.CV.Structure;
using Emgu.CV.CvEnum;
using Emgu.Util;
using System.Drawing;

namespace Lesson11
{
    class Program
    {
        static void Main(string[] args)
        {
            #region ROI区域的设置与保存
            //Mat img = CvInvoke.Imread("1.jpg");
            //CvInvoke.Imshow("img", img);

            Mat ROI = new Mat(img, new Rectangle(213, 236, 494, 246)).Clone();//方法一,注意浅拷贝
            //Mat ROI = new Mat(img, new Range(236, 236 + 246), new Range(213, 213 + 494)).Clone();//方法二

            //CvInvoke.MedianBlur(ROI, ROI, 15); //中值滤波

            //CvInvoke.Imshow("ROI", ROI);
            //CvInvoke.Imwrite("roi.jpg", ROI);
            //CvInvoke.WaitKey(0);
            #endregion

            #region 直接融合
            //Mat img = CvInvoke.Imread("1.jpg");
            //Mat logo = CvInvoke.Imread("opencv.jpg");
            CvInvoke.Imshow("img", img);
            CvInvoke.Imshow("logo", logo);
            CvInvoke.WaitKey(0);

            //Mat ROI = new Mat(img, new Rectangle(10, 10, logo.Cols, logo.Rows));
            ROI = logo.Clone(); //将logo的所有信息拷贝到ROI
            //logo.CopyTo(ROI); //将logo的数据区拷贝到ROI（位置）

            //CvInvoke.Imshow("roi", ROI);
            //CvInvoke.Imshow("result", img);
            //CvInvoke.WaitKey(0);
            #endregion

            #region 掩码融合
            //Mat img = CvInvoke.Imread("1.jpg");
            //Mat logo = CvInvoke.Imread("opencv.jpg");
            CvInvoke.Imshow("src", img);
            CvInvoke.Imshow("logo", logo);

            //Mat mask = new Mat();//8位单通道图像
            //CvInvoke.CvtColor(logo, mask, ColorConversion.Bgr2Gray);//彩色转灰度图
            //CvInvoke.BitwiseNot(mask, mask); //逻辑非
            //CvInvoke.Imshow("bitwise_not", mask);
            //CvInvoke.Threshold(mask, mask, 100, 255, ThresholdType.Binary); //二值化
            //CvInvoke.Imshow("threshold", mask);

            //Mat ROI = new Mat(img, new Rectangle(10, 10, logo.Cols, logo.Rows));
            //logo.CopyTo(ROI, mask); //将logo的数据区拷贝到ROI

            //CvInvoke.Imshow("roi", ROI);
            //CvInvoke.Imshow("result", img);
            //CvInvoke.WaitKey(0);
            #endregion

            #region 自己创建掩码
            //Mat img = CvInvoke.Imread("1.jpg");
            //Mat logo = CvInvoke.Imread("lena.jpg");
            CvInvoke.Imshow("src", img);
            CvInvoke.Imshow("logo", logo);

            //Mat mask = Mat.Zeros(logo.Rows, logo.Cols, DepthType.Cv8U, 1); //创建和logo图片同样大小的全黑图像
            //CvInvoke.Circle(mask, new Point(logo.Rows / 2, logo.Cols / 2), 180, new MCvScalar(255), -1);
            //Mat ROI = new Mat(img, new Rectangle(0, 0, logo.Cols, logo.Rows));

            //logo.CopyTo(ROI, mask);//将logo的数据区拷贝到ROI

            //CvInvoke.Imshow("result", img);

            //CvInvoke.WaitKey(0);
            #endregion

            Mat img = CvInvoke.Imread("1.jpg");
            Mat logo = CvInvoke.Imread("lena.jpg");
            CvInvoke.Imshow("src", img);
            CvInvoke.Imshow("logo", logo);

            Mat mask = CvInvoke.Imread("mask.jpg", 0); //以灰度模式加载
            CvInvoke.Threshold(mask, mask, 200, 255, ThresholdType.Binary);

            Mat ROI = new Mat(img, new Rectangle(150, 20, logo.Cols, logo.Rows));

            logo.CopyTo(ROI, mask);

            CvInvoke.Imshow("result", img);

            CvInvoke.WaitKey(0);
        }
    }
}

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