Ultra-Short-Throw Image Alignment Using Dual Camera Position Detection
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Solution Overview
Problem
Common cameras struggle to capture full projection screens and pictures in ultra-short-throw projectors, leading to low accuracy in screen and projection picture positioning, resulting in poor display effects.
Innovation Solution
Utilize two cameras to acquire lateral projected images, perform image processing to determine projection and screen positions, and adjust the picture accordingly to ensure complete coverage and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single common camera is used for taking images, then the device complexity is low, but the measurement precision of screen position and projection picture position is insufficient
Solution Approach 1:
The patent divides the image capture task into two separate cameras: a first camera for capturing the projection picture and a second camera for capturing the screen. This segmentation allows each camera to be optimized for its specific capture task, improving the overall measurement precision of position detection while maintaining manageable system complexity through clear functional division
2Area of stationary object
If a common camera is used, then the ease of operation is high, but the area of captured image is insufficient to cover full projection screen and picture
Solution Approach 1:
The patent transitions from a single-camera perspective to a multi-camera spatial arrangement, capturing images from different dimensional perspectives. The first camera captures the projection picture while the second camera captures the screen from a different position, together covering the full area needed for accurate positioning without requiring an overly complex operational setup
3Manufacturing precision
If picture adjustment is performed based on incomplete picture data, then the device complexity is low, but the manufacturing precision of picture-screen alignment is poor
Solution Approach 1:
The patent implements a feedback mechanism where the first camera captures the projection picture, the second camera captures the screen, and the control device processes both images to determine their relative positions. This feedback loop enables accurate picture-screen alignment by continuously monitoring and adjusting based on actual captured images, achieving high manufacturing precision through coordinated multi-camera feedback
Data Source
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AI summary
This application provides an ultra-short-throw picture and screen alignment method which includes that: a first lateral projected image and a second lateral projected image are acquired by two cameras when an ultra-short-throw projector projects a picture; image processing is performed on the first lateral projected image and the second lateral projected image to obtain a projection position in a projection area and a screen position in a screen area; and the picture is adjusted according to the screen position and the projection position, so that a position of an adjusted projection picture and a target position coincide. In this application, the projected images are acquired by the two cameras, thereby ensuring acquisition of complete images; the projection position and the screen position are obtained by cooperative processing, the picture is adjusted according to the projection position and the screen position, so that accuracy in projection picture adjustment and display effects are improved. This application also provides an ultra-short-throw picture and screen alignment apparatus, an ultra-short-throw projection device, and a computer-readable storage medium all having the above advantages.