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My answer with complete code (c++) :https://answers.ros.org/question/141741/calculate-depth-from-point-cloud-xyz/?answer=381085#post-id-381085

Code funtionality:

• Subscribed to /camera/depth/image_raw rostopic,
• Convert ROS image to OpenCV image
• Get image dimension
• Get global max and min value,
• Get depth value at specific point,

My answer with complete code (c++) :https://answers.ros.org/question/141741/calculate-depth-from-point-cloud-xyz/?answer=381085#post-id-381085

Code funtionality:

• Subscribed to /camera/depth/image_raw rostopic,
• Convert ROS image to OpenCV image
• Get image dimension
• Get global max and min value,
• Get depth value at specific point,

My answer with complete code (c++) :https://answers.ros.org/question/141741/calculate-depth-from-point-cloud-xyz/?answer=381085#post-id-381085: https://answers.ros.org/question/141741/calculate-depth-from-point-cloud-xyz/?answer=381085#post-id-381085

Code funtionality:

• Subscribed to /camera/depth/image_raw rostopic,
• Convert ROS image to OpenCV image
• Get image dimension
• Get global max and min value,
• Get depth value at specific point,

My answer with complete code (c++) : https://answers.ros.org/question/141741/calculate-depth-from-point-cloud-xyz/?answer=381085#post-id-381085

Code funtionality:

• Subscribed to /camera/depth/image_raw /camera/depth/image_raw rostopic,
• Convert ROS image to OpenCV image
• Get image dimension
• Get global max and min value,
• Get depth value at specific point,