3D Display Pointer Control via Depth-Space Detection
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Solution Overview
Problem
Existing image display apparatuses, such as those described in PTL 2, do not allow for intuitive operations when a detection target like a finger cannot be inserted into the space where a three-dimensional object is visually recognized.
Innovation Solution
An image display apparatus that includes a display unit showing a three-dimensional image within a first space, a position detection section, and a display control section that moves the pointer's display position based on the detected position of a detection target within a second space not overlapping the first space, allowing intuitive operation by altering the pointer's position in the first space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a detection target is inserted into the first space to enable intuitive operation, then ease of operation is improved, but the three-dimensional image display is blocked or interfered with
Solution Approach 1:
The patent transitions from two-dimensional screen interaction to three-dimensional space interaction by utilizing depth information. The detection section measures distance from the screen surface along the optical axis, enabling operations in the third dimension (depth) rather than only on the screen plane. This allows the detection target to interact with the three-dimensional image space without blocking the display.
Solution Approach 2:
The patent introduces a detection section as an intermediary between the user and the three-dimensional image. This detection section measures the position and distance of the detection target, and the control section uses this information to move the pointer accordingly. The intermediary system enables intuitive operation while maintaining clear visibility of the three-dimensional image.
2Ease of operation
If the detection target is positioned in the second space surrounding the first space, then intuitive operation is enabled, but the device complexity increases
Solution Approach 1:
The detection section serves multiple functions: it detects the presence of the detection target, measures its position, and determines its distance from the screen. This multi-functional approach reduces the need for separate sensors for each measurement, thereby limiting the increase in device complexity while enabling intuitive operation in the second space.
3Manufacturing precision
If a color projector emitting laser light is used to display three-dimensional images, then image display quality is improved, but the detection of detection target position becomes more difficult
Solution Approach 1:
The patent applies different functional qualities to different regions: the center region contains the color projector for high-quality three-dimensional image display, while the peripheral region contains the detection section for position detection. This local differentiation allows the detection section to operate effectively without interfering with the central image display quality.
Data Source
AI summary
There is provided an image display apparatus that enables an intuitive operation even when a detection target is not able to be inserted into a first space in which a three-dimensional object is visually recognized. A position of a detection target is detected, and a display position of a pointer displayed by a display unit is moved on a basis of a position of the detection target that exists within a second space not overlapping the first space which is a space in which the three-dimensional object is displayed among the position of the detected detection target.