Projected Image Correction Through Touchscreen Corner Mapping
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Solution Overview
Problem
Current projector image correction methods require cumbersome manual key adjustments and cursor operations, making the process inefficient and time-consuming.
Innovation Solution
A projected image correction system and method utilizing a portable electronic device with a touch-sensitive display to intuitively adjust projector images by generating touch-input data for coordinate updates, allowing for simplified and accelerated correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional four-corner correction method using remote control directional keys is used, then image correction function is achieved, but operation complexity and time consumption increase significantly
Solution Approach 1:
The patent replaces the mechanical button-pressing operation on remote control with a graphical user interface on a smartphone or tablet device. Users interact with virtual control points displayed on the screen by dragging them directly, substituting the mechanical key system with a touchscreen-based visual control system that maps to the projector's correction functions.
Solution Approach 2:
The patent introduces a smartphone or tablet device as an intermediary between the user and the projector's correction system. This intermediary device runs an application that communicates with the projector via wireless connection, providing a more intuitive control interface than the remote control while maintaining compatibility with the projector's correction capabilities.
2Manufacturing precision
If multiple parameters are adjusted for each corner to achieve rectangular shape, then image correction accuracy is improved, but number of operations increases
Solution Approach 1:
The patent combines multiple adjustment parameters (horizontal and vertical displacement for each corner) into a single unified graphical operation. By displaying control points that represent corners of the projected image and allowing users to drag these points directly to their desired positions, the system merges what would otherwise require separate parameter adjustments into one intuitive gesture per corner.
Solution Approach 2:
The patent transitions from a one-dimensional control approach (sequential button presses for horizontal and vertical adjustments) to a two-dimensional graphical interface where users can simultaneously control both horizontal and vertical positions by dragging control points in any direction on the screen. This dimensional change allows more efficient specification of corner positions.
Data Source
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AI summary
A projected image correction system and method and a non-transitory computer-readable recording medium are provided. A processor of a portable electronic device is configured to perform the following steps: activating a display unit to display a function interface including multiple function icons; obtaining multiple original coordinates of multiple adjustable points corresponding to a projected image of a projector; making a position relation among the function icons on the function interface respectively correspond to a position relation among the adjustable points of the projected image; in response to first touch-drag operation on the first function icon, generating first touch-input data per unit of time; calculating first updated coordinate of first adjustable point corresponding to the first function icon based on the first touch-input data; transmitting the first updated coordinate to the projector, so that the projector correspondingly adjusts the first adjustable point of the projected image to the first updated coordinate.