Projector Grid Point Deformation for Non-Planar Surface Alignment
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Solution Overview
Problem
Conventional projectors require complex and time-consuming adjustments when projecting onto non-planar surfaces or surfaces not parallel to the projector, leading to abnormal image shapes and increased setup times.
Innovation Solution
A projection system and method that includes a projector and control unit, allowing for the movement of image grid points based on continuous adjustment signals to deform the projection image, enabling convenient adjustment of the projection range by determining cumulative displacement amounts proportional to the signal quantity cumulative value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional projector adjustment methods are used, then the projection image can be adjusted to fit non-planar surfaces or non-parallel positions, but the adjustment process becomes complicated and time-consuming
Solution Approach 1:
The patent replaces manual mechanical adjustment of the projector position and orientation with an automated image processing system. The control unit automatically analyzes the projection image, detects grid point positions, calculates required displacements, and generates adjustment commands, substituting the mechanical adjustment process with computational processing that is both faster and more precise.
Solution Approach 2:
The system implements self-service adjustment by automatically detecting the projection image characteristics, calculating the necessary corrections, and executing the adjustment without user intervention. The control unit autonomously processes the image data, determines grid point displacements, and applies the corrections, enabling the projector to self-adjust to non-planar surfaces and non-parallel positions efficiently.
2Adaptability or versatility
If conventional projector adjustment methods are used, then the projection image can be adjusted to fit non-planar surfaces or non-parallel positions, but the adjustment process requires multiple steps and complex settings
Solution Approach 1:
The patent extracts the essential adjustment parameters from complex projector settings by focusing specifically on grid point displacement. Instead of adjusting multiple projector parameters (focus, zoom, position, orientation), the system extracts and directly adjusts only the necessary image grid point positions, simplifying the adjustment process while maintaining adaptability to various projection surfaces.
Solution Approach 2:
The patent segments the projection image into a grid of reference points and adjusts each grid point independently based on its specific displacement requirements. This segmentation approach allows the system to handle complex image distortions by breaking them down into individual point adjustments, making the overall adjustment process more manageable and less complex than adjusting the entire image as a single unit.
Data Source
AI summary
A projection system, a projection image adjusting method and a projector are provided. The projection system includes a projector and a control unit. The projector projects a projection image. The control unit controls movement of an image grid point of the projection image projected by the projector. When the projector receives a continuous adjustment signal output by the control unit, the projector determines a cumulative displacement amount proportional to a continuous signal quantity cumulative value according to the continuous signal quantity cumulative value of the continuous adjustment signal, and the image grid point is moved by the projector according to the cumulative displacement amount to correspondingly deform at least a part of the projection image, so as to provide a convenient projection image adjustment effect.