Dynamic Operating Boundary for Intuitive Cursor Control
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Solution Overview
Problem
Conventional hand gesture control methods for generating a cursor on a display are either too restrictive in their operation range or lack intuitive control, as they either limit the icon range or make it difficult for operators to control the cursor effectively.
Innovation Solution
A display control apparatus and method that utilizes a recognition circuit to identify the operator's head and control point positions, dynamically adjusts the operating boundary based on these positions and the display boundary, and calculates the cursor position to ensure it remains on an imaginary line passing through both, allowing for intuitive and flexible control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the cursor is generated by mapping the coordinates of an entire image onto a display, then the mapping is simple, but the icon range corresponding to the display is too small
Solution Approach 1:
The patent applies dynamics by making the operating boundary adjustable rather than fixed. The mapping relationship dynamically adapts based on the detected hand position, allowing the icon range to expand or contract while maintaining accurate coordinate mapping. This resolves the contradiction by enabling both simple mapping and adequate icon range through dynamic boundary adjustment.
Solution Approach 2:
The patent changes the parameter of the operating boundary based on hand position detection. By varying the boundary parameters according to where the hand is located in the detection range, the system maintains simple coordinate mapping while ensuring the icon range is always appropriately sized and positioned on the display.
2Measurement precision
If reference original points are set in an image for mapping the coordinates of the image to the display coordinates, then the mapping accuracy is improved, but the operator is unable to control the range of operation
Solution Approach 1:
The system uses the operator's own hand position as the reference for determining the operating boundary. Instead of requiring the operator to manually set reference points, the hand detection system automatically establishes the mapping relationship, allowing the operator to control the operation range simply by moving their hand to different positions in the detection range.
Solution Approach 2:
The hand position serves multiple functions: it acts as both the reference point for coordinate mapping and the control mechanism for adjusting the operating boundary. This multi-functionality eliminates the need for separate reference point setting while maintaining mapping accuracy and providing operation range control.
3Device complexity
If a fixed operating boundary is used for cursor control, then the control mechanism is simple, but the cursor cannot be controlled intuitively across different display areas
Solution Approach 1:
The operating boundary transitions from a fixed structure to a dynamic one that automatically adjusts based on hand position. This dynamic adjustment maintains relative simplicity in the control mechanism while dramatically improving cursor control intuitiveness, as the boundary naturally follows the operator's intended area of interaction.
Data Source
AI summary
A display control apparatus and a display control method are disclosed. The display control apparatus comprises a recognition circuit and a mapping circuit. The recognition circuit recognizes a head position and a control point position of an operator. The mapping circuit dynamically adjusts the operating boundary according to the head position, the control point position and a display boundary, and calculates the cursor position on a display according to the control point position, the operating boundary and the display boundary, wherein the cursor position remains on a imagine line passing through the head position and the control point position.