Image Acquisition Device Bandwidth Control via Active Inactive Segmentation
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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 quality and position, with the active device transmitting images at a higher frequency or resolution and the inactive device at a lower setting, thereby reducing the overall bandwidth required for transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple image acquisition devices transmit images to the controller simultaneously, then the gaze point analysis accuracy is improved, but the required transmission bandwidth exceeds the available bandwidth
Solution Approach 1:
The patent segments the image acquisition devices into active and inactive groups based on their relative positions to the target object. Only the active device (closest to target) transmits images at high bandwidth, while inactive devices transmit at lower bandwidth or not at all. This segmentation resolves the bandwidth contradiction by maintaining sufficient image data for accurate gaze analysis while reducing overall transmission load.
Solution Approach 2:
The patent applies local quality by differentiating transmission quality based on spatial location. The active image acquisition device (located closer to the target object) transmits high-quality images, while inactive devices transmit lower-quality images. This localized quality differentiation ensures accurate gaze point analysis from the most relevant image source while conserving bandwidth resources.
2Measurement precision
If all image acquisition devices transmit images at the same high bandwidth, then the image quality is maintained, but the network load becomes excessive
Solution Approach 1:
The patent applies partial action by having only the active image acquisition device transmit at full high bandwidth, while inactive devices transmit at reduced bandwidth. This partial transmission approach maintains sufficient image quality for accurate gaze analysis from the most critical source while avoiding the excessive network load that would result from all devices transmitting at full bandwidth.
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.