Light Spot Indication Robot 3D to 2D Projection
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Solution Overview
Problem
Current shopping-guiding robots face difficulties in obtaining three-dimensional coordinates of target objects, requiring complex calculations and high demands on control units for accurate light spot indication.
Innovation Solution
A light spot indication robot and method that converts three-dimensional space locations to two-dimensional space locations, using a control module, imaging module, and laser indication module with motors to align a laser spot projection position with a target object's projection position on an image plane, determined by user input via various signal input modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If three-dimensional coordinates are used to control the laser pointer to indicate the target object, then the position indication accuracy is improved, but the computational complexity increases and the control unit requirements become higher
Solution Approach 1:
The patent projects the three-dimensional target object and laser spot onto a two-dimensional image plane formed by the imaging module. This dimensionality reduction transforms the complex 3D coordinate calculation into simpler 2D coordinate matching, significantly reducing computational complexity while maintaining accurate position indication through the projection relationship
2Measurement precision
If three-dimensional coordinates are used to control the laser pointer to indicate the target object, then the position indication accuracy is improved, but the control unit requirements become higher
Solution Approach 1:
By projecting both the target object and laser spot onto the same two-dimensional image plane, the system eliminates the need for complex 3D coordinate transformations. The control unit only needs to perform 2D coordinate matching and basic motor control, significantly reducing control unit requirements while preserving accurate position indication through the projection geometry
3Manufacturing precision
If the laser pointer is controlled to rotate at certain angles according to three-dimensional coordinates, then the laser spot can reach the specified position, but the calculation amount increases
Solution Approach 1:
The patent reduces the calculation burden by working in 2D image plane coordinates rather than 3D space coordinates. The control calculations involve simple 2D coordinate transformations and motor angle computations, dramatically reducing calculation time while maintaining precise laser spot positioning through the projection relationship between the image plane and physical space
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces computational complexity and achieves quick and accurate position indication with minimal calculations, allowing for efficient light spot guidance in two-dimensional space.
Implementation Method 1
the imaging module shoots to-be-indicated objects to form an image plane, and the laser beam and the to-be-indicated object are projected onto the image plane to form a laser spot projection position and to-be-indicated object projection positions
Implementation Method 2
the laser indication module emits a laser beam
Implementation Method 3
the laser indication module comprises a laser pointer and a driving means including a first motor and a second motor, wherein the second motor is fixedly arranged on an output shaft of the first motor... the free end swings around the fixed end
Data Source
AI summary
A light spot indication robot and a light spot indication method thereof are arranged. The light spot indication robot comprises a robot body which is arranged with a control module, a camera module and a laser indication module (100), wherein the laser indication module (100) emits a laser beam, the imaging module shoots to-be-indicated objects to form an image plane, the laser beam and the to-be-indicated object are projected onto the image plane to form a laser spot projection position and to-be-indicated object projection positions, respectively. The light spot indication robot is also arranged with a signal input module. According to content shown on the image plane of the to-be-indicated objects shot by the imaging module and input information of the signal input module, a target object among the to-be-indicated objects is determined. The control module controls the laser indication module to move, so as to cause the laser spot projection position to coincide with a projection position of the target object in the image plane. The present invention converts the location in a three-dimensional space into the location in a two-dimensional space, and has a small computation amount and a quick and accurate position indication.