Mobile Picture Zooming via Rectangular Region Selection
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Solution Overview
Problem
Existing methods for zooming-in on mobile terminals are imprecise and difficult to use, especially when trying to zoom-in on the same region multiple times, due to inconsistent finger slide operations and the need for large picture handling on small screens.
Innovation Solution
A method that partitions a picture into an array of rectangles, allowing for precise zooming-in by detecting touch points and determining the corresponding rectangular range, enabling zooming-in within the identified region without requiring opposite finger slide operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two fingers are slid in opposite directions to zoom-in, then zoom-in function is achieved, but zoom-in precision deteriorates due to inconsistent slide operations
Solution Approach 1:
The patent replaces the mechanical sliding operation with a touch-point-based selection mechanism. Users place two touch points on the screen to define a rectangular region, and the system automatically zooms into that region without requiring precise sliding motions. This substitution eliminates the inconsistency inherent in manual sliding operations.
Solution Approach 2:
The patent introduces an intermediary rectangular region defined by two touch points as a mediator between the user's touch input and the zoom-in action. This rectangular region serves as a buffer that translates imprecise touch placements into a well-defined zoom target, improving precision while maintaining ease of operation.
2Manufacturing precision
If picture resolution is increased, then picture quality is improved, but picture size becomes larger making details hard to view on small screens
Solution Approach 1:
The patent segments the large high-resolution picture into a grid of rectangular regions. By dividing the picture into M×N rectangles and allowing users to select specific regions for zooming, the system enables detailed viewing of particular areas without requiring the entire large picture to be displayed at once on the small screen.
Solution Approach 2:
The patent transitions from displaying the entire picture in two dimensions on the small screen to a multi-stage zooming process that effectively adds a temporal dimension. Users can progressively zoom into regions of interest, transforming the viewing experience from a static 2D display limitation to a dynamic multi-scale viewing approach.
3Ease of operation
If two fingers are used for sliding operation, then zoom-in function is achieved, but operation consistency deteriorates making it difficult to zoom-in the same region multiple times
Solution Approach 1:
The patent replaces the inconsistent mechanical sliding motion with a stable touch-point placement mechanism. By allowing users to simply place two touch points to define a rectangular region, the system eliminates the variability inherent in sliding motions, enabling consistent selection of the same region across multiple operations.
Solution Approach 2:
The patent creates a digital copy or representation of the selected rectangular region defined by two touch points. This copied region can be consistently selected and zoomed into multiple times, as the touch points define a precise rectangular boundary that can be repeatedly reproduced without variation.
Data Source
AI summary
A method for zooming-in a picture on a mobile terminal may comprise: partitioning, by a picture partitioning module, a picture into an array formed by M×N rectangles; acquiring rectangles of two touch points when a touch detection module detects that there are two touch points on the picture; and zooming-in, by a display and zoom-in module, a rectangular array between rows and columns of the rectangles of the two touch points.