Projector Camera Range Alignment via Marker Correction
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Solution Overview
Problem
Existing systems for projector-equipped cameras assume a constant displacement between the image capturing and emission units, limiting their application to setups where the emission unit is not movable, and fail to correct differences between the image capturing and emission ranges effectively.
Innovation Solution
An information processing apparatus and method that includes an image obtaining unit, correction information generation unit, and correction unit to synchronize the image capturing and emission ranges by using a marker-based correction system, allowing for dynamic adjustment of the emission range to match the image capturing range, even when the units are not arranged constantly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a constant displacement arrangement between image capturing unit and emission unit is assumed, then the correction method can be simplified, but the system cannot be applied to cases where the emission unit is movable in any direction or where the arrangement is not constant
Solution Approach 1:
A marker is introduced as an intermediary element between the emission unit and image capturing unit. The marker serves as a reference object that can be detected in the captured image, enabling the system to calculate the actual emission range and generate appropriate correction information without requiring complex mechanical coupling or constant displacement arrangements.
Solution Approach 2:
The patent replaces the mechanical assumption of constant displacement with an optical/detection-based approach. Instead of relying on fixed mechanical arrangements, the system uses image detection of a marker to determine the emission range and generates correction information computationally, allowing the emission unit to be movable while maintaining correction accuracy.
2Adaptability or versatility
If the emission unit is made movable in any direction, then the versatility of the system is improved, but the accuracy of alignment between emission range and image capturing range deteriorates without proper correction
Solution Approach 1:
The system implements a feedback mechanism where the marker detected in the captured image provides information about the actual emission range. This feedback is used to calculate the difference between the emission range and image capturing range, generating correction information that adjusts the emission output to achieve accurate alignment despite the emission unit's mobility.
3Measurement precision
If correction information is generated based on marker position and shape differences, then accurate correction of emission range can be achieved, but the processing complexity increases
Solution Approach 1:
The marker in the emission graphic image serves as a reference copy or template. By comparing the detected marker in the captured image with this reference marker, the system can calculate position and shape differences to generate correction information, simplifying the processing by using a reference template for comparison.
Data Source
AI summary
There is provided an information processing apparatus including an image obtaining unit for obtaining a captured image onto which an emission graphic image including a marker serving as a reference is emitted and a correction information generation unit for generating correction information, for making an emission range and an image capturing range be the same, from a difference between the emission range onto which the emission graphic image is emitted and the image capturing range of the captured image, based on the marker in the captured image and the marker in the emission graphic image.