camera calibration file head_camera.yaml not found

最新推荐文章于 2023-10-13 14:56:24 发布

转载最新推荐文章于 2023-10-13 14:56:24 发布 · 8.7k 阅读

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原文链接：https://answers.ros.org/question/290474/camera-calibration-file-head_camerayaml-not-found/

本文讨论了启动USB摄像头时遇到的两个常见警告：未找到相机校准文件和未知控制'focus_auto'。文章解释了这些警告的原因，即缺少相机镜头模型校准和硬件不支持自动与手动对焦切换，并提供了相应的解决方案。

camera calibration file head_camera.yaml not found

Arduino#ROS#Raspberry
kinetic

asked May 4 '18
samo gravatar image
samo
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updated May 5 '18
PeteBlackerThe3rd gravatar image
PeteBlackerThe3rd flag of United Kingdom of Great Britain and Northern Ireland
8072 ●16 ●112 ●105 https://www.linkedin.c…

Hello,

I’m trying to launch my USB camera, i typed : roslaunch cam-test.launch so my camera is working but i had two warnings:

[ WARN ] : Camera calibration file /home/..../.ros/camera_info/head_camera.yaml not found

[ WARN ] : unknown control 'focus_auto'

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In my case, the camera image is displayed well although such two warnings happened as above.
bigbellmercy gravatar imagebigbellmercy ( Sep 26 '19 )
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answered May 5 '18
PeteBlackerThe3rd gravatar image
PeteBlackerThe3rd flag of United Kingdom of Great Britain and Northern Ireland
8072 ●16 ●112 ●105 https://www.linkedin.c…

These are only warnings so you’re camera node should be running okay and publishing images. Have you started RVIZ and tried to view the image topic?

The first warning is caused because you haven’t calibrated the camera lens model and linked this into the launch file. If you’re not estimating geometry from images then you will not need this anyway. If you need to calibrate the camera this is described here.

The second warning appears to state that your USB camera hardware doesn’t support switching between auto and manual focus. I wouldn’t worry about this one either.