Flash Intensity Control Using UWB Tags for ROI Illumination
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Solution Overview
Problem
Current imaging devices fail to properly illuminate regions of interest in digital images due to flash intensity determination algorithms that do not account for the user's specific focus, leading to frustration.
Innovation Solution
A computing device determines flash intensity based on the distance between a UWB tag and an image capture module, automatically identifying the region of interest without user input, using techniques such as UWB positioning to enhance accuracy and reduce computational power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If estimation algorithms determine flash intensity based on auto-focus information or ambient light, then the flash intensity can be automatically determined, but the region of interest is not properly illuminated
Solution Approach 1:
The patent introduces a tag as an intermediary object that carries information about the region of interest. The tag communicates distance and location data to the computing device, which then uses this information to determine appropriate flash intensity. This mediator resolves the contradiction by providing specific region information that neither the autofocus system nor ambient light sensors can provide alone.
Solution Approach 2:
The patent replaces traditional optical-mechanical methods (autofocus-based estimation, ambient light sensing) with a wireless communication-based system using UWB tags. This substitution allows direct digital communication of distance and location data, enabling more accurate flash intensity determination that specifically targets the region of interest rather than relying on indirect optical measurements.
2Ease of operation
If traditional estimation algorithms are used to determine flash intensity, then the system is simple to operate, but the image capture quality in the region of interest is poor
Solution Approach 1:
The tag performs self-service by automatically communicating its distance and location information to the computing device. The user simply needs to point the device at the region of interest, and the tag autonomously provides the necessary data for flash intensity calculation. This maintains ease of operation while dramatically improving image capture quality through precise region-specific illumination.
3Measurement precision
If UWB positioning is used to determine distance to region of interest, then flash intensity accuracy is improved, but computational power consumption increases
Solution Approach 1:
The system performs preliminary action by having the tag continuously maintain its position and distance information ready for communication. When the user points the device at the region of interest, the distance data is already available or can be quickly determined, avoiding the need for complex real-time computational analysis during the actual image capture moment.
Data Source
AI summary
A computing device includes digital imaging functionality that captures images digitally using any of a variety of different technologies. The computing device receives an indication of, or determines, a distance between a physical location of a tag and an image capture module. The tag is a device that transmits and receives signals allowing one or more other devices to determine the physical location of the tag, such as an ultra-wideband tag. The computing device also includes a flash intensity determination system that automatically generates, based at least in part on the distance between the tag and the image capture module, a flash intensity for capturing a digital image.