Image Projection Surface Mapping for Curved-Plane Distortion Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Projection devices face distortion issues when displaying images on non-planar surfaces due to the curvature of the projection plane, leading to suboptimal image quality.
Innovation Solution
An image projection apparatus equipped with sensors, processors, and memory units models pixel projection points based on the curvature characteristics of the projection plane, adjusts pixel positions, and applies distortion corrections to generate undistorted images on non-planar surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the projector displays images directly on non-planar surfaces, then the projection region is expanded, but image distortion occurs
Solution Approach 1:
The system performs preliminary actions by capturing the projection surface geometry using depth sensors and cameras before projection. It pre-calculates distortion correction parameters and generates corrected images in advance, so that when the image is projected onto the non-planar surface, the distortion is already compensated for, achieving both expanded projection region and maintained image quality.
Solution Approach 2:
The system changes parameters by adjusting pixel positions and projection parameters based on the detected surface curvature. It dynamically modifies the image coordinates and projection angles to compensate for the non-planar surface characteristics, thereby eliminating distortion while maintaining the ability to project onto various surface types including non-planar ones.
2Manufacturing precision
If the projector corrects image distortion on non-planar surfaces, then image quality is improved, but processing complexity increases
Solution Approach 1:
The system achieves universality by using a multi-functional processing architecture that can handle both planar and non-planar surfaces with the same core algorithms. The depth sensor, camera, and processor work together in a unified framework that automatically adapts to different surface types, eliminating the need for separate processing pipelines and reducing overall system complexity despite the advanced correction capabilities.
Data Source
AI summary
An image projection apparatus includes: at least one sensor; an image projector; at least one memory including a non-volatile storage medium storing instructions; and at least one processor including processing circuitry, where, when executed individually or collectively by the at least one processor, the instructions cause the image projection apparatus to: model a first image display region including first pixel projection points according to a curvature characteristic of a projection plane based on sensing data of the at least one sensor; obtain second position information about second pixel projection points included in a second image display region according to a viewpoint of the projection plane, based on first position information about the first pixel projection points; and generate an output image including correct an input image based on the second position information, according to the curvature characteristic of the projection plane.