C#使用OpenCv图像批处理并改变图片大小并且重命名

添加NuGet包


选择最新版就好了


安装完成后右键项目重新生成方案

使用OpenCvSharp.CPlusPlus命名空间

using OpenCvSharp.CPlusPlus;

写一个函数用来改变图片大小并且重新命名

read_path是存储图片的文件夹的路径,write_path是改变后图片存储的文件夹路径,filename是图片重命名,width和height分别为图片修改后的宽和高

public static void ResizeImg(String read_path,String write_path,String filename,double width,double height) {

Mat img1 = new Mat(read_path);

Mat img2 = img1;

OpenCvSharp.CPlusPlus.Size size = new OpenCvSharp.CPlusPlus.Size(width, height);

Cv2.Resize(img1, img2, size, 0, 0);

Cv2.ImWrite(write_path+"\\"+ filename, img2);

}

在Main函数中使用该函数

static void Main(string[] args)

{

string dir_path = @"G:\TestImg";//读取路径

String write_path = "G:\\TestImg2";//存储路径

String[] filenames=Directory.GetFiles(dir_path);

for (int i = 0; i < filenames.Length; i++) {

ResizeImg(filenames[i], write_path, i + ".png", 200, 300);

}

Console.ReadKey();

}

运行结果


完整代码

using System;

using System.Collections.Generic;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using OpenCvSharp;

using OpenCvSharp.CPlusPlus;

using System.Runtime.InteropServices;

using System.IO;

namespace ResizeTest

{

class Program

{

static void Main(string[] args)

{

string dir_path = @"G:\TestImg";//读取路径

String write_path = "G:\\TestImg2";//存储路径

String[] filenames=Directory.GetFiles(dir_path);

for (int i = 0; i < filenames.Length; i++) {

ResizeImg(filenames[i], write_path, i + ".png", 200, 300);

}

Console.ReadKey();

}

public static void ResizeImg(String read_path,String write_path,String filename,double width,double height) {

Mat img1 = new Mat(read_path);

Mat img2 = img1;

OpenCvSharp.CPlusPlus.Size size = new OpenCvSharp.CPlusPlus.Size(width, height);

Cv2.Resize(img1, img2, size, 0, 0);

Cv2.ImWrite(write_path+"\\"+ filename, img2);

}

}

}

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