robot coordinate system
In robotics and robot navigation, a right-handed coordinate system is commonly used, which is defined as follows:
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X axis : Usually defined as the "front" or "forward" direction of the robot. In mobile robots, this is usually the direction the robot is traveling.
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Y-axis : In a right-handed coordinate system, the Y-axis is usually defined as the "left" or "left" direction of the robot.
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Z-axis : In three-dimensional space, the Z-axis is usually defined as the "up" or "up" direction.
In this coordinate system, rotation usually follows the right-hand rule, that is, if the four fingers of your right hand are curled in the direction of rotation, then the direction your thumb is pointing is the direction of the axis of rotation.
This coordinate system is often used to describe the posture of the robot itself (ie, the robot coordinate system or the body coordinate system), as well as the position and posture of the robot in the global coordinate system (such as a map or world coordinate system). However, it should be noted that the definition of the specific coordinate system may vary according to different robots and applications.
image coordinate system
In computer vision and image processing, the coordinate system of an image is usually as follows:
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X axis : from left to right. That is, the origin (point 0) of the X-axis is usually at the far left of the image, increasing to the right.
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Y axis : from top to bottom. this may be with you