Virtual Camera Control via Joystick Inversion for 3D Space Navigation
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Solution Overview
Problem
Conventional systems for interacting with virtual three-dimensional spaces using joysticks are not intuitive, as the direction of object movement depends on the virtual camera's position, making it difficult to perform precise operations.
Innovation Solution
An information processing device with a CG image generating unit, a three-dimensional operating unit, and an associating unit that allows for real-time rendering and control of virtual three-dimensional spaces by reversing the sign of control based on input parameters, enabling intuitive object movement and camera control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional joystick controls object movement in a virtual three-dimensional space, then the object can be moved in three-dimensional space, but the direction of movement on the screen varies depending on the virtual camera position, making the operation non-intuitive
Solution Approach 1:
The patent applies inversion by reversing the control target from the object to the virtual camera. Instead of controlling the object's position directly through the joystick, the system controls the virtual camera's position and orientation. This inversion makes the operation intuitive because the joystick directions (up, down, left, right) naturally correspond to the camera's viewing directions, and objects move intuitively within the camera's field of view regardless of the camera's position in three-dimensional space.
2Adaptability or versatility
If the virtual camera position is changed to view the virtual three-dimensional space from different angles, then the viewing perspective is improved, but the object movement direction becomes unpredictable relative to the screen display
Solution Approach 1:
By inverting the control target to the virtual camera rather than the object, the system resolves the conflict between viewing flexibility and movement predictability. The joystick controls the camera's position and orientation, allowing free movement to any viewing angle. Meanwhile, object movement within the camera's field of view remains predictable because it responds to joystick directions relative to the camera's current orientation, not to the absolute three-dimensional coordinate system.
Solution Approach 2:
The system provides visual feedback by displaying the virtual camera's position and orientation information on the screen. This feedback mechanism helps the operator understand the relationship between joystick input and the resulting camera movement, as well as the relationship between the camera's field of view and object movement directions, thereby maintaining operational predictability even when the camera is positioned at various angles.
Data Source
AI summary
The present invention relates to an information processing device, an information processing method, and a program for realizing an intuitive operation to issue an instruction to move an object in a virtual three-dimensional space or the like, to an operator who performs operations while looking at an image of the virtual three-dimensional space.The information processing device in this disclosure includes a control unit that controls a CG image generating unit in response to an input of parameters of three axial directions through a three-dimensional operating unit. The control unit changes the amount of control of the CG image generating unit in accordance with the input parameters, to cause an image of the virtual three-dimensional space to vary between where a virtual camera is associated with the three-dimensional operating unit and where an object is associated with the three-dimensional operating unit. This disclosure can be applied to a video editing device for editing broadcast video images.