Interactive Object Selection Using Buffer and Body Areas
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Solution Overview
Problem
In graphical user interfaces with multiple interactive objects, accurately selecting an object is difficult due to the need for precise positioning, especially with densely arranged or small objects, often leading to accidental touches.
Innovation Solution
An interactive object selection method that uses a buffer area and a body area preset for each object, allowing selection based on the touch operation's position and direction, reducing the requirement for precise positioning by enabling selection when the touch falls into the buffer area and moves towards the body area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If direct point-of-input selection is used for interactive objects, then the selection method is simple, but the selection accuracy deteriorates when objects are densely arranged or extremely small
Solution Approach 1:
The patent divides the interactive object into two distinct regions: a buffer area surrounding the object and a body area representing the object itself. This segmentation allows the system to differentiate between accidental touches (in the buffer area) and intentional selections (when the touch moves into the body area), thereby resolving the contradiction between simple operation and accurate selection.
Solution Approach 2:
The buffer area serves as an intermediary zone between the user's touch and the actual interactive object. Instead of directly selecting the object upon initial contact, the system uses the buffer area as a preliminary detection zone, monitoring touch movement to confirm intentional selection before triggering the selection action. This intermediary mechanism enhances selection accuracy without complicating the user interaction.
2Ease of operation
If the touch target area is expanded to improve selection ease, then the ease of operation improves, but the frequency of accidental touches increases
Solution Approach 1:
The patent implements a dynamic selection mechanism where the effective target area changes based on touch behavior. Initially, only the body area is the active selection target. When a touch occurs in the buffer area, the system dynamically monitors the touch movement trajectory. Only when the touch moves into the body area does the selection become active. This dynamic approach allows the buffer area to serve as an expanded detection zone without permanently increasing the selection target, thus improving ease of operation while preventing accidental touches.
Solution Approach 2:
The system performs preliminary detection in the buffer area before confirming selection. When a touch operation occurs within the buffer area, the system does not immediately select the interactive object but instead monitors the touch movement in advance. This preliminary action allows the system to distinguish between intentional selections (touch moving toward the body area) and accidental touches (touch remaining in or moving away from the buffer area), thereby expanding the effective detection area without increasing accidental selection frequency.
3Measurement precision
If a buffer area is introduced around interactive objects, then the selection precision improves, but the system complexity increases
Solution Approach 1:
The patent applies local quality by assigning different functional properties to different spatial zones around the interactive object. The body area maintains its traditional selection function, while the surrounding buffer area is assigned a preliminary detection function. This localized differentiation allows the system to enhance selection precision through the buffer area without requiring a complete redesign of the entire interaction system, thereby limiting the increase in system complexity to only the necessary buffer area management.
Data Source
AI summary
The present application provides techniques of selecting interactive objects The techniques comprise receiving a touch operation intended for a target interactive object, and determining a touch position of the touch operation; detecting a moving direction of the touch operation in response to determining that the touch position is located in a buffer area preset for the target interactive object; and determining to select the target interactive object in response to determining that the moving direction points toward a body area preset for the target interactive object.