PyCharm中cv2函数无代码补全，OpenCV运动检测矩形不显示问题

问题1：PyCharm中cv2函数无代码补全提示 #

• 卸载当前opencv-python，重新安装带类型提示的包：

  pip uninstall opencv-python
  pip install opencv-python-headless opencv-contrib-python
  

• 若无效，打开PyCharm的File > Settings > Project: [你的项目名] > Python Interpreter，确认opencv-python-headless或opencv-contrib-python已安装，重启PyCharm。
• 检查虚拟环境配置，确保PyCharm使用的解释器是安装了OpenCV的目标虚拟环境。

问题2：添加轮廓过滤后无矩形显示 #

你的代码核心问题是**continue语句的缩进错误**，continue会直接跳过当前循环的剩余代码，导致后续的矩形绘制逻辑永远无法执行。

修正后的完整代码：

import cv2
cam = cv2.VideoCapture(0)
while True:
    ret, frame1 = cam.read()
    ret, frame2 = cam.read()
    diff = cv2.absdiff(frame1, frame2)
    gray = cv2.cvtColor(diff, cv2.COLOR_RGB2GRAY)
    blur = cv2.GaussianBlur(gray, (5, 5), 0)
    _, thresh = cv2.threshold(blur, 20, 255, cv2.THRESH_BINARY)
    dilated = cv2.dilate(thresh, None, iterations=3)
    contours, _ = cv2.findContours(dilated, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
    # cv2.drawContours(frame1, contours, -1, (0, 255, 0), 2)
    for c in contours:
        if cv2.contourArea(c) < 5000:
            continue
        # 将矩形绘制代码移出continue的缩进块
        x, y, w, h = cv2.boundingRect(c)
        cv2.rectangle(frame1, (x, y), (x + w, y + h), (0, 255, 0), 2)

    cv2.imshow('My came', frame1)
    if cv2.waitKey(10) == ord('t'):
        break

# 补充释放资源代码，避免摄像头占用
cam.release()
cv2.destroyAllWindows()

内容的提问来源于stack exchange，提问作者Tutai Koley