Rolling Shutter Camera Image Correction for Optical Communication
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Solution Overview
Problem
Rolling shutter cameras capture moving LEDs, resulting in step-shaped distorted images due to on/off image capture on a row basis, necessitating a method to correct the rolling shutter phenomenon and reduce bit error rate (BER) in optical communication systems.
Innovation Solution
An optical communication-based image processing system that uses a rolling shutter camera to capture images of light emitting elements, encodes and transmits data, and applies a pre-trained image correction model to correct distortion areas, allowing for flicker-free data transmission and reduced BER.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rolling shutter camera is used to capture light emitting elements, then the camera can capture images row by row, but step-shaped distorted images are created when moving LEDs are captured
Solution Approach 1:
The patent applies preliminary action by pre-training an image correction model that learns the characteristic distortions of rolling shutter camera captures. The model is trained on distorted images and their corresponding corrected versions, enabling it to automatically correct step-shaped distortions in moving LED captures without requiring complex real-time computational correction algorithms.
2Productivity
If rolling shutter camera captures moving LEDs, then image capture is enabled, but bit error rate increases due to distortion
Solution Approach 1:
The patent implements feedback by using the image correction model to continuously refine the captured images before data decoding. The model receives distorted images from the rolling shutter camera and outputs corrected images that maintain the original spatial relationships, thereby reducing bit error rates during subsequent optical communication data recovery without sacrificing capture productivity.
3Device complexity
If rolling shutter camera is used, then the system is simpler, but flicker-free environment cannot be provided
Solution Approach 1:
The patent applies copying by creating a corrected image representation that copies the essential information from the distorted rolling shutter capture while eliminating flicker artifacts. The image correction model generates a new image output that preserves the LED on/off state information but removes the step-shaped distortions and flicker effects, effectively providing a flicker-free environment while maintaining system simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively corrects rolling shutter distortions and provides a flicker-free environment, reducing bit error rates by decoding encoded data based on corrected images, even when the camera moves relative to the light emitting elements.
Implementation Method 1
a rolling shutter camera configured to capture an image of at least one light emitting element, when sensing data collected from at least one measurement sensor is encoded and transmitted through the at least one light emitting element
Data Source
AI summary
An optical communication-based image processing system is disclosed. The system may include a transmitter having at least one light emitting element and a receiver having a rolling shutter camera. As the system is provided, a rolling shutter effect may be improved.