Image Acquisition Device Bandwidth Allocation
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Solution Overview
Problem
The existing eye-tracking technology faces bandwidth limitations when multiple image acquisition devices transmit images to a controller, as the required bandwidth exceeds the available transmission capacity, necessitating a method to optimize image transmission without compromising data quality.
Innovation Solution
The method involves determining an active and an inactive image acquisition device based on image characteristics and positions, where the active device uses a higher configuration (frequency, bit width, resolution) and the inactive device uses a lower configuration, allowing the inactive device to transmit images with a smaller bandwidth requirement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple image acquisition devices transmit images to the controller simultaneously using high bandwidth, then the image quality and gaze point analysis accuracy are improved, but the transmission bandwidth requirement exceeds the available transmission capacity
Solution Approach 1:
The patent applies local quality by differentiating the transmission bandwidth allocated to different image acquisition devices based on their relative positions to the target object. The first image acquisition device (closer to target) receives high bandwidth for high-quality images, while the second image acquisition device (farther from target) receives reduced bandwidth, optimizing the balance between image quality and transmission capacity utilization.
2Measurement precision
If all image acquisition devices use the same high bandwidth configuration, then the image quality is consistent, but the transmission bandwidth is wasted and cannot meet the limited transmission capacity
Solution Approach 1:
The patent changes the transmission bandwidth parameter dynamically based on the operational status and position of each image acquisition device. The controller adjusts the bandwidth allocation parameter for the second image acquisition device to a lower level, allowing the system to adapt bandwidth resources to actual needs rather than using a uniform high bandwidth configuration for all devices.
3Quantity of substance
If the transmission bandwidth is reduced for inactive devices, then the overall bandwidth consumption is reduced and fits within transmission capacity limits, but the image quality for those devices deteriorates
Solution Approach 1:
The patent applies partial action by providing high bandwidth to only the first image acquisition device (which captures sufficient images for accurate gaze point analysis) while providing reduced bandwidth to the second image acquisition device. This partial allocation strategy achieves the goal of fitting within transmission capacity limits while maintaining adequate functionality.
Data Source
AI summary
A method and apparatus for controlling an image acquisition device are provided. The method includes that: multiple images photographed by multiple image acquisition devices are acquired; an active image acquisition device and an inactive image acquisition device in the multiple image acquisition devices are determined according to the multiple images; the active image acquisition device is controlled to photograph a first image by using a first configuration, and the inactive image acquisition device is controlled to photograph a second image by using a second configuration; the first image transmitted by the active image acquisition device is acquired, and the second image transmitted by the inactive image acquisition device is acquired, and a bandwidth required by the active image acquisition device to transmit the first image is greater than a bandwidth required by the inactive image acquisition device to transmit the second image.