See-Through Imaging With Color-Field Detection for Flicker Control
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Solution Overview
Problem
Conventional remote conference systems suffer from image quality deterioration due to alternately performed display and imaging operations, leading to flickering and reduced display and imaging quality.
Innovation Solution
An imaging system is designed with a display device interposed between the imaging device and the subject, utilizing a field-sequential color method to divide the display frame period into sub-field periods for different colors, and the imaging device identifies these sub-field periods based on color component ratios to minimize the impact of display light on captured images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If display driving and imaging driving are alternately performed, then both display function and imaging function can be achieved, but flickering occurs in displayed images and captured images, deteriorating display quality and imaging quality
Solution Approach 1:
The patent segments the imaging process by capturing images at different sub-field periods (different colors) separately, then synthesizing them into a single high-quality image. This divides the problematic alternating display-imaging operation into color-separated segments that can be processed independently and combined without flickering.
Solution Approach 2:
The patent introduces an image synthesis processing unit as an intermediary that receives color-separated images from different sub-field periods, synthesizes them into a complete image, and outputs the final result. This intermediary processing step eliminates the flickering effect by combining the segmented color information.
2Adaptability or versatility
If the display panel is interposed between the imaging device and the subject, then remote conference functionality is enabled, but display light affects the captured image quality
Solution Approach 1:
The patent segments the captured image data according to sub-field periods (color separation), allowing the system to identify and exclude or correct portions of the image affected by display light. By processing each color channel separately, the harmful display light interference can be isolated and removed.
Solution Approach 2:
The patent utilizes the color separation inherent in field-sequential color display sub-field periods to identify and differentiate between light from the subject and light from the display panel. By analyzing color component ratios across different sub-field periods, the system can distinguish and remove display light contamination.
3Illumination intensity
If field-sequential color method is used to divide frame period into sub-field periods for different colors, then color display is achieved, but the imaging device must identify and process multiple color components
Solution Approach 1:
The patent employs the imaging device's own color separation capability to automatically identify sub-field periods based on color component ratios. The system uses its inherent ability to detect color differences to self-identify the timing and color of each sub-field period without requiring external synchronization signals, thereby simplifying the overall system complexity.
Solution Approach 2:
The patent changes the parameter used for sub-field identification from complex timing synchronization to simpler color component ratio analysis. By monitoring the ratios of color components (R, G, B) across captured frames, the system can automatically determine sub-field period boundaries and colors, reducing processing complexity while maintaining accuracy.
Data Source
AI summary
According to an aspect, an imaging system includes: a display device including a display panel; and an imaging device disposed such that the display panel is interposed between the imaging device and a subject, and configured to acquire an image of the subject transmitted through the display panel. One frame period for displaying the image of one frame on the display panel includes a plurality of sub-field periods for displaying different colors. The imaging device is configured to identify a sub-field period for displaying a specific color out of the sub-field periods according to a ratio of a color component or a color difference component of the image acquired in each of the sub-field periods.