0602

gesture_recognition.py

@@ -43,7 +43,7 @@ def start_recognition(callback=None):
 
 def run_recognition(callback=None):
     """运行手势识别"""
-    global keep_running, paused, total_raised_fingers
+    global keep_running, paused
 
     while keep_running and cap.isOpened():
         ret, img = cap.read()
@@ -74,7 +74,7 @@ def stop_recognition():
     global keep_running, cap, paused
     keep_running = False
     paused = False
-    if cap is not None and cap.isOpened():
+    if cap is not None:
         cap.release()
         cap = None
     cv2.destroyAllWindows()
@@ -82,10 +82,15 @@ def stop_recognition():
 def release_camera():
     """释放摄像头资源"""
     global cap
-    if cap is not None and cap.isOpened():
+    if cap is not None:
         cap.release()
         cap = None
 
+def reset_hand_detection():
+    """重置手部检测状态"""
+    global hands
+    hands = None
+
 def detect_gesture_and_fingers(hand_landmarks):
     """检测手势和手指状态"""
     gesture_image = get_hand_image(hand_landmarks)

gui.py

@@ -2,21 +2,19 @@ import threading
 from tkinter import *
 from tkinter import ttk
 from PIL import Image, ImageTk
-import numpy as np  # 导入 numpy
-import subprocess  # 导入 subprocess 模块
-from gesture_recognition import start_recognition, stop_recognition, release_camera, keep_running
+import numpy as np
+import subprocess
+from gesture_recognition import start_recognition, stop_recognition, release_camera, keep_running, reset_hand_detection
 
 WINDOW_WIDTH = 800
 WINDOW_HEIGHT = 705
-
-main_launched = False  # 标志位，记录 main.py 是否已经启动
-
+main_launched = False
+status_label = None
 
 def main():
     """显示欢迎屏幕"""
     show_welcome_screen()
 
-
 def set_window_position(window, width, height):
     """设置窗口位置居中"""
     screen_width = window.winfo_screenwidth()
@@ -25,7 +23,6 @@ def set_window_position(window, width, height):
     y = (screen_height - height) // 2
     window.geometry(f'{width}x{height}+{x}+{y}')
 
-
 def show_welcome_screen():
     """显示欢迎界面"""
     welcome = Tk()
@@ -37,19 +34,17 @@ def show_welcome_screen():
     bg_image = ImageTk.PhotoImage(bg_image)
 
     background_label = Label(welcome, image=bg_image)
-    background_label.image = bg_image  # 保持引用，防止垃圾回收
+    background_label.image = bg_image
     background_label.place(relwidth=1, relheight=1)
 
     label = Label(welcome, text="欢迎使用手势识别系统", font=('Helvetica', 24, 'bold'), bg="lightblue", fg="white")
     label.place(relx=0.5, rely=0.4, anchor=CENTER)
 
-    btn_continue = Button(welcome, text="继续", command=lambda: [welcome.destroy(), show_main_screen()],
-                          font=('Helvetica', 14), bg="yellow", fg="black", relief=SOLID)
+    btn_continue = Button(welcome, text="继续", command=lambda: [welcome.destroy(), show_main_screen()], font=('Helvetica', 14), bg="yellow", fg="black", relief=SOLID)
     btn_continue.place(relx=0.5, rely=0.6, anchor=CENTER)
 
     welcome.mainloop()
 
-
 def show_main_screen():
     """显示主界面"""
     global window, canvas, root, paused, popup_open, status_label
@@ -86,7 +81,6 @@ def show_main_screen():
 
     window.mainloop()
 
-
 def start_thread(root, canvas, status_label):
     """启动识别线程"""
     global keep_running, paused, popup_open
@@ -94,16 +88,13 @@ def start_thread(root, canvas, status_label):
         status_label.config(text="正在识别...")
         paused = False
         popup_open = False
-        threading.Thread(target=lambda: start_recognition(
-            callback=lambda fingers, img: root.after(0, update_canvas, canvas, fingers, img))).start()
-
+        threading.Thread(target=lambda: start_recognition(callback=lambda fingers, img: root.after(0, update_canvas, canvas, fingers, img))).start()
 
 def stop_recognition_with_label(status_label):
     """停止识别并更新状态标签"""
     stop_recognition()
     status_label.config(text="已停止")
 
-
 def exit_program():
     """退出程序"""
     global window
@@ -111,10 +102,9 @@ def exit_program():
     release_camera()
     window.destroy()
 
-
 def update_canvas(canvas, fingers, img):
     """更新画布显示图像或处理手指数"""
-    if isinstance(img, np.ndarray):  # 确保传入的img是图像数据
+    if isinstance(img, np.ndarray):
         img = Image.fromarray(img)
         imgtk = ImageTk.PhotoImage(image=img)
         canvas.create_image(0, 0, anchor=NW, image=imgtk)
@@ -122,7 +112,6 @@ def update_canvas(canvas, fingers, img):
         canvas.update()
     handle_finger_detection(fingers)
 
-
 def handle_finger_detection(finger_count):
     """处理检测到的手指数"""
     global paused, popup_open, main_launched
@@ -135,31 +124,30 @@ def handle_finger_detection(finger_count):
             popup_open = True
             show_stop_recognition_window()
 
-
 def launch_main_script():
     """启动 main.py 脚本"""
     subprocess.Popen(['python', 'main.py'])
 
-
 def show_stop_recognition_window():
     """显示停止识别确认窗口"""
-
     def on_continue():
         """继续识别"""
-        global paused, popup_open
+        global paused, popup_open, status_label
         paused = False
-        popup_open = False  # 关闭弹窗后将标志设置为False
+        popup_open = False
         stop_window.destroy()
+        reset_hand_detection()
         start_thread(root, canvas, status_label)
 
     def on_stop():
         """停止识别"""
         global popup_open
         stop_recognition()
-        popup_open = False  # 关闭弹窗后将标志设置为False
+        popup_open = False
         stop_window.destroy()
 
-    stop_window = Tk()
+    if root and root.winfo_exists():
+        stop_window = Toplevel(root)
         stop_window.title("停止识别")
 
         label = Label(stop_window, text="您竖起了五根手指，是否停止识别？", font=('Helvetica', 24, 'bold'))
@@ -174,6 +162,5 @@ def show_stop_recognition_window():
         stop_window.protocol("WM_DELETE_WINDOW", on_continue)
         stop_window.mainloop()
 
-
 if __name__ == "__main__":
     main()