Imaging System Moiré Detection During LED Display Capture
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Solution Overview
Problem
Existing methods for detecting moiré in virtual productions, where a background image is displayed on an LED display and imaged with a real object, often require separate cameras and post-production processing, which can be inefficient and may lead to unnoticed moiré issues.
Innovation Solution
A processing apparatus that integrates with an image pickup apparatus to detect moiré during imaging by comparing a displayed first image with a captured second image, distinguishing between object and background areas, and performing control to notify or correct for moiré occurrence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a separate camera is used for moiré detection, then moiré detection capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the moiré detection function with the main imaging camera by processing the captured image data to detect moiré patterns. Instead of using a separate detection camera, the system analyzes the image data from the imaging camera to identify moiré in the display area, thereby reducing device complexity while maintaining detection capability.
Solution Approach 2:
The imaging camera is given dual functionality: it serves both as the primary imaging device and as a moiré detection device. By processing the captured image data to distinguish between object areas and display areas, the same camera performs multiple functions, eliminating the need for dedicated separate equipment.
2Measurement precision
If post-production processing is used for moiré detection, then detection accuracy is improved, but productivity decreases
Solution Approach 1:
The system performs moiré detection during the imaging process itself rather than in post-production. By analyzing the captured image data in real-time to detect moiré patterns in the display area, the detection action is performed preliminarily before final image processing, enabling immediate identification and correction of moiré issues.
Solution Approach 2:
The system provides real-time feedback about moiré detection results during imaging. By processing image data and notifying operators of detected moiré patterns immediately, the system enables on-the-spot corrections rather than requiring post-production review, thereby improving workflow efficiency and productivity.
3Speed
If moiré is not detected during imaging, then imaging speed is improved, but reliability decreases
Solution Approach 1:
The system performs moiré detection as a preliminary step during the imaging process by analyzing captured image data. This early detection prevents undetected moiré from reaching final production, ensuring reliability without requiring separate post-production checking steps that would slow down the overall workflow.
Data Source
AI summary
A processing apparatus is configured to cause a display apparatus to display a first image, and to acquire from an image pickup apparatus a second image made by capturing at an angle of view including a display area of the display apparatus. The processing apparatus acquires a distinction result of distinguishing between an area in which an object existing between the display area and the image pickup apparatus has been captured, and the display area in the second image, detects a change in the second image by comparing the first image with an image of the display area in the second image, and performs first control for notifying information regarding a detection result.