Vehicle Camera Activation for Low-Power Face Authentication
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Solution Overview
Problem
Conventional vehicle-mount cameras for face authentication consume excessive power due to continuous image capturing and recognition processes, leading to inefficient energy use.
Innovation Solution
A vehicle control apparatus that activates a high-resolution second camera only when a person is detected within a specific area and under certain conditions, such as residence time or movement, while using a lower-resolution first camera for initial detection to conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera continuously captures images and performs recognition processes to ensure accurate face authentication, then authentication reliability is improved, but power consumption increases significantly
Solution Approach 1:
The camera system dynamically adjusts its operation mode based on detected conditions. The determination unit continuously monitors captured images to detect persons and their movement states, then the camera activation unit selectively activates the second camera only when necessary (e.g., when a person is detected moving toward the vehicle), rather than maintaining continuous operation. This dynamic adjustment maintains authentication reliability while significantly reducing power consumption during idle periods.
Solution Approach 2:
The system employs periodic monitoring using the first camera at lower resolution, then selectively activates the second camera for high-resolution capture only when specific conditions are met. This periodic action pattern allows the system to maintain readiness for authentication while minimizing the duration of high-power consumption operations.
2Measurement precision
If the second camera with high resolution is activated continuously to ensure accurate face authentication, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The determination unit performs preliminary detection using the first camera at lower resolution to identify persons and their movement patterns before activating the second camera. This preliminary action filters out unnecessary high-resolution captures, ensuring the second camera is only activated when a person is actually detected in the monitoring area, thus maintaining measurement precision while reducing energy consumption.
Solution Approach 2:
The first camera acts as an intermediary device that performs initial detection and screening. It captures images at lower resolution to determine whether a person is present and moving toward the vehicle, serving as a mediator between the continuous monitoring requirement and the high-precision but energy-intensive second camera.
3Speed
If the camera continuously monitors the area to detect approaching persons, then detection responsiveness is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts monitoring intensity based on real-time conditions. The determination unit analyzes captured images to detect person presence and movement speed, then the camera activation unit adjusts the monitoring level accordingly. When no person is detected or movement is insufficient, the system reduces to lower-power mode while maintaining readiness to quickly activate the second camera when a person approaches, thus balancing responsiveness with power consumption.
Data Source
AI summary
A vehicle control apparatus includes: a determination unit for determining, based on an image captured by a first camera with a first resolution, whether an object around a vehicle is a person or not; and a camera activation unit for activating a second camera when an image of the person as the object enters within a first area corresponding to a range of a first predetermined distance from the vehicle on the captured image, the second camera having a second resolution higher than the first resolution.