add check return_numbers

wangzhibo

2022-03-23 592d0f7477c9a89fe81296f152a42df083e33ea6

add check return_numbers

 extract_voltage_task.py

@@ -85,6 +85,8 @@
                return_numbers.append([x, one_number])
            else:
                return return_numbers, False
    if len(return_numbers)==0:
            return 0,False
    digit = 0
    return_numbers = np.array(sorted(return_numbers))
    return_numbers = return_numbers[:, -1]

 main.py

@@ -143,6 +143,8 @@
            cv2.imwrite("image_frame_"+time_now+".jpg", cv2.putText(frame, str(return_digital), (app.config['IMAGE_CLIP_ROWS_START'], app.config['IMAGE_CLIP_COLS_START']), cv2.FONT_HERSHEY_COMPLEX, 1.5, (0, 255, 255), 2))
            cap.release()
            break
        else:
            cv2.imwrite("./fails/image_frame_"+time_now+".jpg", frame)
    #if need_send _image :
    #    send_image