import cv2 from gui_buttons import Buttons # Initialize Buttons button = Buttons() button.add_button("cup", 20,100) button.add_button("phone", 20, 20) button.add_button("book", 20, 180) colors = button.colors # Opencv DNN net = cv2.dnn.readNet("dnn_model/yolov4-tiny.weights", "dnn_model/yolov4-tiny.cfg") model = cv2.dnn_DetectionModel(net) model.setInputParams(size=(320, 320), scale=1/255) # Load class lists classes = [] with open("dnn_model/classes.txt", "r") as file_object: for class_name in file_object.readlines(): class_name = class_name.strip() classes.append(class_name) print("Objects list") print(classes) # Initialize camera cap = cv2.VideoCapture(0, cv2.CAP_DSHOW)#( 'G:\course_320\视频素材参考\CF.mp4') # 2, cv2.CAP_DSHOW cap.set(cv2.CAP_PROP_FRAME_WIDTH, 1200) cap.set(cv2.CAP_PROP_FRAME_HEIGHT,650) # FULL HD 1920 x 1080 def click_button(event, x, y, flags, params): global button_person if event == cv2.EVENT_LBUTTONDOWN: button.button_click(x, y) # Create window cv2.namedWindow("Frame") cv2.setMouseCallback("Frame", click_button) while True: # Get frames ret, frame = cap.read() # Get active buttons list active_buttons = button.active_buttons_list() #print("Active buttons", active_buttons) # Object Detection (class_ids, scores, bboxes) = model.detect(frame, confThreshold=0.3, nmsThreshold=0.4) for class_id, score, bbox in zip(class_ids, scores, bboxes): (x, y, w, h) = bbox class_name = classes[class_id] color = colors[class_id] if class_name in active_buttons: cv2.putText(frame, class_name, (x, y - 10), cv2.FONT_HERSHEY_PLAIN, 2, color, 2) cv2.rectangle(frame, (x, y), (x + w, y + h), color, 5) # Display buttons button.display_buttons(frame) cv2.imshow("Frame", frame) key = cv2.waitKey(1) if key == 30: break cap.release() cv2.destroyAllWindows()能解释这段代码各部分的功能吗
时间: 2024-03-31 20:36:25 浏览: 152
这段代码实现了一个物体检测的应用,并且加入了交互式的按钮功能。下面是各部分的具体功能:
1. 导入cv2库和自定义的Buttons类,以及其他需要的模块。
2. 初始化按钮对象,添加三个按钮,设置其位置。
3. 获取按钮的颜色。
4. 初始化OpenCV的深度神经网络模型,并加载相应的权重文件和配置文件。
5. 加载类别列表。
6. 初始化摄像头,并设置其分辨率。
7. 定义点击按钮的回调函数,用于处理鼠标事件。
8. 创建窗口,并设置鼠标回调函数。
9. 进入循环,读取视频帧。
10. 获取当前激活的按钮列表。
11. 对视频帧进行物体检测,获取检测结果。
12. 遍历检测结果,如果检测到的物体在激活的按钮列表中,则在视频帧上绘制检测框和类别名称。
13. 显示按钮。
14. 显示视频帧。
15. 等待用户按下“ESC”键退出程序。
16. 释放摄像头资源,关闭窗口。
相关问题
public partial class Form1 : Form{ private Point mouseOffset; // 鼠标位置与图片位置的差值 private Point imageLocation; // 图片的位置 public Form1() { InitializeComponent(); } private void pictureBox1_MouseDown(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { mouseOffset = new Point(-e.X, -e.Y); imageLocation = pictureBox1.ImageLocation; } } private void pictureBox1_MouseMove(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { Point mousePos = Control.MousePosition; mousePos.Offset(mouseOffset.X, mouseOffset.Y); pictureBox1.ImageLocation = imageLocation; pictureBox1.ImageLocation = mousePos; } } private void pictureBox1_MouseUp(object sender, MouseEventArgs e) { mouseOffset = Point.Empty; imageLocation = Point.Empty; }}报错了
这段代码的报错信息可能是因为 `pictureBox1` 控件的 `ImageLocation` 属性为只读属性,不能直接对其赋值。你可以尝试修改为 `pictureBox1.Location` 属性来实现鼠标拖动图片的效果。
修改后的代码如下:
```
public partial class Form1 : Form
{
private Point mouseOffset; // 鼠标位置与图片位置的差值
private Point imageLocation; // 图片的位置
public Form1()
{
InitializeComponent();
}
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
mouseOffset = new Point(-e.X, -e.Y);
imageLocation = pictureBox1.Location;
}
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
Point mousePos = Control.MousePosition;
mousePos.Offset(mouseOffset.X, mouseOffset.Y);
pictureBox1.Location = mousePos;
}
}
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
mouseOffset = Point.Empty;
imageLocation = Point.Empty;
}
}
```
希望这能帮助到你!
using System; using System.Drawing; using HalconDotNet; using System.Windows.Forms; public class HImageBox : HWindowControl { private HObject roiObject; private HTuple startX, startY, endX, endY; private bool isROICreating = false; public HImageBox() : base() { roiObject = new HObject(); startX = new HTuple(); startY = new HTuple(); endX = new HTuple(); endY = new HTuple(); } protected override void OnPaint(PaintEventArgs e) { base.OnPaint(e); if (isROICreating) { HOperatorSet.SetDraw(WindowHandle, "margin"); HOperatorSet.SetColor(WindowHandle, "red"); HOperatorSet.DrawLine(WindowHandle, startY, startX, endY, endX); } } protected override void OnMouseDown(MouseEventArgs e) { base.OnMouseDown(e); if (e.Button == MouseButtons.Left) { isROICreating = true; startX = e.X; startY = e.Y; } } protected override void OnMouseMove(MouseEventArgs e) { base.OnMouseMove(e); if (isROICreating) { endX = e.X; endY = e.Y; Refresh(); } } protected override void OnMouseUp(MouseEventArgs e) { base.OnMouseUp(e); if (e.Button == MouseButtons.Left) { isROICreating = false; HOperatorSet.GenRectangle1(out roiObject, startY, startX, endY, endX); HOperatorSet.DispObj(roiObject, WindowHandle); } } public HObject GetROIObject() { return roiObject; } }怎么将上述的类,调价到form上?
要将该类添加到 Windows Form 上,可以按照以下步骤进行操作:
1. 打开 Visual Studio,并创建一个新的 Windows Forms 应用程序项目。
2. 打开 Form1.cs 文件,并在设计器中将 HImageBox 控件添加到表单上。
3. 双击 HImageBox 控件,打开 HImageBox.cs 文件。
4. 将 HImageBox 类的代码复制并粘贴到 HImageBox.cs 文件中。
5. 在 Form1.cs 文件中,实例化 HImageBox 控件并将其添加到表单上。可以使用以下代码:
```
public partial class Form1 : Form
{
private HImageBox hImageBox1;
public Form1()
{
InitializeComponent();
hImageBox1 = new HImageBox();
hImageBox1.Dock = DockStyle.Fill;
this.Controls.Add(hImageBox1);
}
}
```
6. 现在,您可以在 HImageBox 控件中使用上述代码中定义的方法和属性。例如,要获取当前选择的 ROI 对象,可以使用以下代码:
```
HObject roiObject = hImageBox1.GetROIObject();
```
阅读全文