c# OpenCvSharp 过滤器 Filter2D 边缘检测
Filter2D:利用内核实现对图像的卷积运算。
using OpenCvSharp;
using OpenCvSharp.Extensions;
using DlibDotNet;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;