图片前的版本

.idea/huojv.iml

@@ -2,7 +2,7 @@
 <module type="PYTHON_MODULE" version="4">
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$" />
-    <orderEntry type="jdk" jdkName="dnf" jdkType="Python SDK" />
+    <orderEntry type="jdk" jdkName="Python 3.9" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

.idea/misc.xml

@@ -3,5 +3,5 @@
   <component name="Black">
     <option name="sdkName" value="D:\CONDA\anaconda3" />
   </component>
-  <component name="ProjectRootManager" version="2" project-jdk-name="dnf" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9" project-jdk-type="Python SDK" />
 </project>

preview.py

@@ -126,8 +126,17 @@ class PreviewWindow:
             print(f"✅ 成功加载 {loaded_count} 个采集卡")
     
     def capture_frames(self):
-        """捕获帧"""
+        """每5秒截取一张图"""
+        import time
+        first_capture = True  # 第一次立即截取
         while self.running:
+            if first_capture:
+                first_capture = False
+                # 第一次立即截取，不等待
+                pass
+            else:
+                # 之后每5秒截取一次
+                time.sleep(5.0)
             for idx, data in self.caps.items():
                 try:
                     ret, frame = data['cap'].read()
@@ -145,19 +154,18 @@ class PreviewWindow:
                             # 转换颜色空间
                             frame_rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
                             self.frames[idx] = frame_rgb
+                            print(f"📸 采集卡 {idx} 截图已更新")
                         else:
                             print(f"⚠️ 采集卡 {idx} 裁剪参数无效")
                     else:
                         # 读取失败，清除旧帧
                         if idx in self.frames:
                             self.frames[idx] = None
+                            print(f"⚠️ 采集卡 {idx} 读取失败")
                 except Exception as e:
                     print(f"捕获帧 {idx} 错误: {e}")
                     import traceback
                     traceback.print_exc()
-            
-            import time
-            time.sleep(0.01)  # 避免CPU占用过高
     
     def create_grid_window(self):
         """创建网格窗口"""
@@ -187,7 +195,7 @@ class PreviewWindow:
         print(f"📐 预览窗口配置: {preview_width}x{preview_height}, 网格: {columns}x{rows}")
         
         root = tk.Tk()
-        root.title("采集卡预览 - 点击放大")
+        root.title("采集卡预览（每5秒更新）- 点击放大")
         root.geometry(f"{preview_width}x{preview_height}")
         root.update_idletasks()  # 立即更新窗口尺寸
         
@@ -197,6 +205,7 @@ class PreviewWindow:
         # 存储图像对象（使用列表保存所有PhotoImage引用，防止GC）
         self.photo_objects_list = []
         self.photo_objects = {}  # 按索引映射
+        self.canvas_image_items = {}  # 保存canvas中的图像项ID，用于更新而不是删除重建
         
         # 用于控制调试输出（只打印前几次）
         self.debug_count = 0
@@ -344,23 +353,31 @@ class PreviewWindow:
                         texts_to_draw.append((center_x, center_y, f"{name}\n等待画面...", 'gray'))
                         frame_idx += 1
                 
-                # 清空画布（保留photo引用，只清空画布内容）
+                # 先收集所有photo对象到列表中，确保引用不丢失
-                canvas.delete("all")
+                photos_current_frame = []
                 
                 # 先绘制所有图像（底层）
                 if self.debug_count <= 3:
                     print(f"📊 绘制状态: {len(images_to_draw)} 个图像, {len(texts_to_draw)} 个文本, 画布={canvas_width}x{canvas_height}")
-                    print(f"   当前保存的照片对象数量: {len(self.photo_objects_list)}")
                     
                 if images_to_draw:
-                    # 先收集所有photo对象到列表中，确保引用不丢失
+                    # 删除旧的文本和分割线，但保留图像项（这样PhotoImage引用不会被释放）
-                    photos_current_frame = []
+                    # 只删除文本项和线条项
+                    for item_id in list(canvas.find_all()):
+                        item_tags = canvas.gettags(item_id)
+                        item_type = canvas.type(item_id)
+                        # 删除文本和线条，保留图像
+                        if item_type in ['text', 'line']:
+                            try:
+                                canvas.delete(item_id)
+                            except:
+                                pass
                     
+                    # 现在更新或创建图像项
                     for i, item in enumerate(images_to_draw):
                         if len(item) == 4:
                             photo, x, y, idx = item
                         else:
-                            # 兼容旧格式（如果还有的话）
                             photo, x, y = item[:3]
                             idx = None
                             
@@ -370,45 +387,58 @@ class PreviewWindow:
                                 # 先保存引用到列表（防止GC）
                                 photos_current_frame.append(photo)
                                 
-                                # 然后绘制
+                                # 更新或创建图像项
-                                canvas.create_image(x, y, image=photo, anchor='center')
+                                if idx in self.canvas_image_items:
-                                
+                                    # 更新现有图像项
-                                if self.debug_count <= 3 and i == 0:
+                                    try:
-                                    print(f"   绘制图像 #{i} (idx={idx}) 到位置 ({x}, {y})")
+                                        item_id = self.canvas_image_items[idx]
+                                        canvas.coords(item_id, x, y)
+                                        canvas.itemconfig(item_id, image=photo)
+                                        if self.debug_count <= 3 and i == 0:
+                                            print(f"   更新图像 #{i} (idx={idx}) 到位置 ({x}, {y})")
+                                    except:
+                                        # 如果更新失败，删除旧的并创建新的
+                                        try:
+                                            canvas.delete(self.canvas_image_items[idx])
+                                        except:
+                                            pass
+                                        item_id = canvas.create_image(x, y, image=photo, anchor='center')
+                                        self.canvas_image_items[idx] = item_id
+                                        if self.debug_count <= 3 and i == 0:
+                                            print(f"   重新创建图像 #{i} (idx={idx}) 到位置 ({x}, {y})")
+                                else:
+                                    # 创建新图像项
+                                    item_id = canvas.create_image(x, y, image=photo, anchor='center')
+                                    self.canvas_image_items[idx] = item_id
+                                    if self.debug_count <= 3 and i == 0:
+                                        print(f"   创建图像 #{i} (idx={idx}) 到位置 ({x}, {y})")
                             else:
                                 if self.debug_count <= 3:
                                     print(f"   ⚠️ 图像 #{i} 位置 ({x}, {y}) 超出画布范围")
                         except Exception as e:
                             error_msg = str(e).lower()
                             print(f"   ❌ 绘制图像 #{i} 时出错: {type(e).__name__}: {e}")
-                            
+                            import traceback
-                            if "pyimage" in error_msg:
+                            traceback.print_exc()
-                                # PhotoImage 对象被 GC 了，尝试恢复
-                                if self.debug_count <= 5:
-                                    print(f"   ⚠️ PhotoImage 对象丢失，尝试从字典恢复 (idx={idx})")
-                                if idx is not None and idx in self.photo_objects:
-                                    try:
-                                        photo = self.photo_objects[idx]
-                                        photos_current_frame.append(photo)
-                                        canvas.create_image(x, y, image=photo, anchor='center')
-                                        if self.debug_count <= 5:
-                                            print(f"   ✅ 已从字典恢复并重新绘制")
-                                    except Exception as e2:
-                                        if self.debug_count <= 5:
-                                            print(f"   ❌ 恢复失败: {e2}")
-                            else:
-                                # 其他类型的错误，打印完整堆栈
-                                import traceback
-                                traceback.print_exc()
                     
-                    # 保存当前帧的所有photo引用（替换旧的列表，只保留当前帧）
+                    # 删除不再存在的图像项
-                    # 这样确保正在显示的photo对象不会被GC
+                    current_indices = set(idx for item in images_to_draw if len(item) >= 4 for idx in [item[3]])
-                    self.photo_objects_list = photos_current_frame[:]  # 复制列表
+                    for idx in list(self.canvas_image_items.keys()):
+                        if idx not in current_indices:
+                            try:
+                                canvas.delete(self.canvas_image_items[idx])
+                                del self.canvas_image_items[idx]
+                            except:
+                                pass
+                    
+                    # 保存当前帧的所有photo引用
+                    self.photo_objects_list = photos_current_frame[:]
                 else:
-                    # 如果没有图像，至少显示一些提示
+                    # 如果没有图像，清空所有并显示提示
+                    canvas.delete("all")
+                    self.canvas_image_items.clear()
                     if self.debug_count <= 3:
                         print("   ⚠️ 没有图像可绘制")
-                    # 在画布中心显示提示
                     canvas.create_text(
                         canvas_width // 2, 
                         canvas_height // 2, 
@@ -429,6 +459,20 @@ class PreviewWindow:
                     except Exception as e:
                         print(f"绘制文本错误: {e}")
                 
+                # 绘制更新时间提示（右上角）
+                try:
+                    import datetime
+                    update_time = datetime.datetime.now().strftime("%H:%M:%S")
+                    canvas.create_text(
+                        canvas_width - 10, 15,
+                        text=f"最后更新: {update_time}",
+                        fill='gray',
+                        font=('Arial', 8),
+                        anchor='ne'
+                    )
+                except:
+                    pass
+                
                 # 强制更新画布显示
                 canvas.update_idletasks()
                 
@@ -462,8 +506,8 @@ class PreviewWindow:
                 print(f"更新帧错误: {e}")
                 import traceback
                 traceback.print_exc()
-            # 约30fps
+            # 每1秒检查一次是否有新截图（截图在另一个线程每5秒更新）
-            root.after(33, update_frames_once)
+            root.after(1000, update_frames_once)
         
         def on_canvas_click(event):
             """点击画布事件"""
@@ -516,52 +560,109 @@ class PreviewWindow:
         root.mainloop()
     
     def show_large_window(self, idx):
-        """显示大窗口"""
+        """显示大窗口（实时显示指定采集卡）"""
         if self.large_window is not None and self.large_window.winfo_exists():
             self.large_window.destroy()
         
         self.large_window = tk.Toplevel()
-        self.large_window.title(f"放大视图 - {self.caps[idx]['name']}")
+        self.large_window.title(f"放大视图 - {self.caps[idx]['name']} (实时)")
         self.large_window.geometry("1280x720")
         
         canvas = Canvas(self.large_window, bg='black')
         canvas.pack(fill=tk.BOTH, expand=True)
         
         photo_obj = {}
+        canvas_image_item = None  # 保存canvas中的图像项ID
         
         def update_large_once():
             if not self.running or not self.large_window.winfo_exists():
                 return
             try:
+                # 从采集卡实时读取帧（不依赖截图）
+                if idx not in self.caps:
+                    canvas.delete("all")
+                    canvas.create_text(
+                        640, 360,
+                        text="采集卡已断开", 
+                        fill='red', 
+                        font=('Arial', 16)
+                    )
+                    self.large_window.after(1000, update_large_once)
+                    return
+                
+                cap = self.caps[idx]['cap']
+                ret, frame = cap.read()
+                
                 # 获取窗口大小
                 window_width = self.large_window.winfo_width() if self.large_window.winfo_width() > 1 else 1280
                 window_height = self.large_window.winfo_height() if self.large_window.winfo_height() > 1 else 720
                 
-                if idx in self.frames and self.frames[idx] is not None:
+                if ret and frame is not None:
-                    # 先处理图像，再清空画布
+                    # 裁剪到配置的区域
-                    frame = self.frames[idx]
+                    height, width = frame.shape[:2]
-                    h, w = frame.shape[:2]
+                    crop_top = 30
+                    crop_bottom = min(crop_top + 720, height)
+                    crop_width = min(1280, width)
+                    
+                    # 确保裁剪范围有效
+                    if crop_bottom > crop_top and crop_width > 0:
+                        frame = frame[crop_top:crop_bottom, 0:crop_width]
+                        
+                        # 转换颜色空间
+                        frame_rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
+                        h, w = frame_rgb.shape[:2]
 
-                    # 调整到窗口大小
+                        # 调整到窗口大小
-                    scale = min(window_width / w, window_height / h)
+                        scale = min(window_width / w, window_height / h)
-                    new_w = int(w * scale)
+                        new_w = int(w * scale)
-                    new_h = int(h * scale)
+                        new_h = int(h * scale)
 
-                    resized_frame = cv2.resize(frame, (new_w, new_h))
+                        resized_frame = cv2.resize(frame_rgb, (new_w, new_h))
-                    # 确保颜色通道正确（BGR -> RGB）
+                        pil_image = Image.fromarray(resized_frame)
-                    if len(resized_frame.shape) == 3 and resized_frame.shape[2] == 3:
+                        photo = ImageTk.PhotoImage(image=pil_image)
-                        resized_frame = cv2.cvtColor(resized_frame, cv2.COLOR_BGR2RGB)
+                        # 保存引用到字典，确保不被GC
-                    pil_image = Image.fromarray(resized_frame)
+                        photo_obj['img'] = photo
-                    photo = ImageTk.PhotoImage(image=pil_image)
-                    # 保存引用到字典，确保不被GC
-                    photo_obj['img'] = photo
 
-                    # 清空并绘制新图像
+                        # 更新或创建图像项
-                    canvas.delete("all")
+                        if canvas_image_item is not None:
-                    canvas.create_image(window_width // 2, window_height // 2, image=photo, anchor='center')
+                            try:
+                                # 更新现有图像项
+                                canvas.coords(canvas_image_item, window_width // 2, window_height // 2)
+                                canvas.itemconfig(canvas_image_item, image=photo)
+                            except:
+                                # 如果更新失败，删除旧的并创建新的
+                                try:
+                                    canvas.delete(canvas_image_item)
+                                except:
+                                    pass
+                                canvas_image_item = canvas.create_image(
+                                    window_width // 2, 
+                                    window_height // 2, 
+                                    image=photo, 
+                                    anchor='center'
+                                )
+                        else:
+                            # 创建新图像项
+                            canvas.delete("all")  # 首次创建时清空
+                            canvas_image_item = canvas.create_image(
+                                window_width // 2, 
+                                window_height // 2, 
+                                image=photo, 
+                                anchor='center'
+                            )
+                    else:
+                        canvas.delete("all")
+                        canvas.create_text(
+                            window_width // 2, 
+                            window_height // 2, 
+                            text="裁剪参数无效", 
+                            fill='red', 
+                            font=('Arial', 16)
+                        )
                 else:
                     # 显示等待提示
                     canvas.delete("all")
+                    canvas_image_item = None
                     canvas.create_text(
                         window_width // 2, 
                         window_height // 2, 
@@ -572,6 +673,7 @@ class PreviewWindow:
             except Exception as e:
                 if "pyimage" not in str(e).lower():  # 忽略pyimage错误，避免刷屏
                     print(f"更新大窗口错误: {e}")
+            # 约30fps，实时显示
             self.large_window.after(33, update_large_once)
 
         self.large_window.after(33, update_large_once)