Intel Realsense D435 开始运行启动时报错：RuntimeError: Couldn‘t resolve requests 原因及解决办法

Question

Intel Realsense D435 开始运行启动时报错：RuntimeError: Couldn’t resolve requests

利用d435 rgb frame拍摄图像时出现如下错误：

Traceback (most recent call last):
  File "E:\ProgramData\Anaconda3\envs\Develop\lib\site-packages\IPython\core\interactiveshell.py", line 3418, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-2-83d4be2340b2>", line 1, in <module>
    runfile('shot.py', wdir='dataset')
  File "E:\Program Files\JetBrains\PyCharm 2020.3\plugins\python\helpers\pydev\_pydev_bundle\pydev_umd.py", line 197, in runfile
    pydev_imports.execfile(filename, global_vars, local_vars)  # execute the script
  File "E:\Program Files\JetBrains\PyCharm 2020.3\plugins\python\helpers\pydev\_pydev_imps\_pydev_execfile.py", line 18, in execfile
    exec(compile(contents+"\n", file, 'exec'), glob, loc)
  File "shot.py", line 11, in <module>
    pipe_profile = pipeline.start(config)
RuntimeError: Couldn't resolve requests
           

代码：

import time

import numpy as np
import pyrealsense2 as rs
import cv2

framerate = 15
pipeline = rs.pipeline()
config = rs.config()
config.enable_stream(rs.stream.color, 640, 480, rs.format.bgr8, framerate)
pipe_profile = pipeline.start(config)
save_path = "./images_jpg/"
shot_flag = False
while True:
    frames = pipeline.wait_for_frames()
    color_frame = frames.get_color_frame()
    img_color = np.asanyarray(color_frame.get_data())
    cv2.imshow("q", img_color)

    key = cv2.waitKey(1)
    if key & 0xFF == ord('q'):
        break
    elif key & 0xFF == ord('s'):
        shot_flag = ~shot_flag
        print("shot flag "+str(shot_flag))
    if shot_flag:
        cv2.imwrite(save_path + str(time.time()) + ".jpg", img_color)
           

Answer

检查后发现是帧率设置过低导致的，网上也有人因为线过长导致无法启动，如果使用较长的数据线，可以先提高帧率试试看。