Face Detection Range Control for User Boot
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Solution Overview
Problem
Information processing apparatuses that use face detection to boot systems face issues when multiple users share the same device, as they either fail to boot for specific users or wastefully consume power by booting for non-registered individuals who briefly glance at the screen.
Innovation Solution
The apparatus employs a dual detection range and angle setting for face detection, where a wider range is used for registered users and a narrower range for non-registered users, allowing proper system booting only when a registered user approaches, thus preventing unnecessary power consumption from passing by individuals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If face detection is used to boot the system when any person approaches, then the system becomes easily accessible to users, but power is wasted when non-registered persons trigger the boot
Solution Approach 1:
The patent applies local quality by implementing different detection characteristics for different spatial zones. The detection unit uses a first detection characteristic (wider detection range) for a first spatial zone closer to the display device, and a second detection characteristic (narrower detection range) for a second spatial zone farther away. This allows the system to be sensitive to approaching users in the near zone while filtering out distant passersby in the far zone, thus preventing unnecessary power consumption while maintaining ease of access for legitimate users.
2Loss of energy
If the detection range is narrowed to prevent false activation by passersby, then power consumption is reduced, but registered users may fail to trigger system boot
Solution Approach 1:
The patent applies dynamics by making the detection characteristics changeable based on spatial zone. Rather than using a fixed detection range, the detection unit dynamically switches between a first detection characteristic with a wider detection range for the first spatial zone and a second detection characteristic with a narrower detection range for the second spatial zone. This dynamic adjustment ensures that registered users can reliably trigger boot when approaching from the near zone, while the far zone maintains strict detection to prevent false activation and reduce power consumption.
3Device complexity
If a single detection range is used for all persons, then the system structure remains simple, but it cannot differentiate between registered users and non-registered individuals
Solution Approach 1:
The patent applies local quality by assigning different detection characteristics to different spatial zones. The detection unit implements a first detection characteristic (wider range) for the first spatial zone and a second detection characteristic (narrower range) for the second spatial zone. This spatial differentiation enables the system to distinguish between users approaching for use (in the near zone) and distant observers (in the far zone), providing user differentiation capability while maintaining relatively simple system architecture.
Data Source
AI summary
An information processing apparatus executes user registration processing to register a user based on face information on a specific person, person detection processing to detect the presence of a person by detecting a face area with a face captured therein from a captured image captured by an imaging unit, and user determination processing to determine whether or not a person detected by the person detection processing is the specific person registered as the user, and boots a system based on the user registration processing, the person detection processing, and the user determination processing. Further, the information processing apparatus sets a detection range in the person detection processing to a first detection range for the specific person registered as the user, and sets the detection range to a second detection range different from the first detection range for a person not registered as the user.