from picamera2 import Picamera2
import cv2

def main():
    picam2 = Picamera2()
    picam2.configure(picam2.create_preview_configuration(main={"format": "BGR888", "size": (640, 480)}))
    picam2.start()


    x, y, w, h = [100, 0, 260, 450]

    print("Type 's' to save a still image. Type 'q' to quit.")
    while True:
        cmd = input("Command [s/q]: ").strip().lower()
        if cmd == 's':
            frame = picam2.capture_array()
            frame = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
            frame = cv2.equalizeHist(frame)
            # Draw a green rectangle on the image
            cv2.rectangle(frame, (x, y), (x + w, y + h), (0, 255, 0), 2)
            cv2.imwrite("still_image.jpg", frame)
            print("Saved still_image.jpg")
        elif cmd == 'q':
            break

    picam2.stop()

if __name__ == "__main__":
    main()