总体目标是做个一个各类图像预处理的合集，方便自己理解函数。首先第一个问题就是图像获取，原先一直用Afroge的摄像头获取（理由是能看到设备名称），但这次反正是自己用，就直接Emgucv用了。

还是无力吐槽，好端端的Capture改什么VideoCapture。

 private void OpenCapture_Click(object sender, EventArgs e)
        {
            if (cap != null)
            {
                if (isProcess)
                {
                    Application.Idle -= new EventHandler(ProcessFram);
                    OpenCapture.Text = "结束";
                }
                else
                {
                    Application.Idle += new EventHandler(ProcessFram);
                    OpenCapture.Text = "开始";
                }
                isProcess = !isProcess;
            }
            else
            {
                try
                {
                    capID= Convert.ToInt32(this.comboBox1.Text);

                    cap = new Emgu.CV.VideoCapture(capID);

                    string resolution_ratio = this.comboBox2.Text; //我搞了个分辨率设置1920*1080
                    if (resolution_ratio != null)
                    {
                         tempNum1 = Convert.ToInt32(resolution_ratio.Split('*')[0]);
                         tempNum2 = Convert.ToInt32(resolution_ratio.Split('*')[1]);
                    }
                    cap.SetCaptureProperty(CapProp.FrameHeight, tempNum2);
                    cap.SetCaptureProperty(CapProp.FrameWidth, tempNum1);

                }
                catch (NullReferenceException expt)
                {
                    MessageBox.Show(expt.Message);
                }
            }

            //this.imageList2.ImageSize = new Size(tempNum1, tempNum2);

        }

接着是另一个无力吐槽的listview，若不加个判断，总会出错。

private void listView1_SelectedIndexChanged(object sender, EventArgs e)
        {
            this.imageBox1.Image = null;
            if (listView1.SelectedItems.Count == 0) return;
            else
            {
                ListView.SelectedIndexCollection tempNum = listView1.SelectedIndices;
                this.imageBox1.Image = new Image<Bgr, byte>(imageList2[tempNum[0]]);
            }
        }

初开博客，目的是交流与合作，本人QQ：273651820。