Face Orientation Brightness Control for Faster Screen Response
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Solution Overview
Problem
Existing information processing systems face poor responsiveness in adjusting screen brightness based on face orientation, leading to inefficiencies in power saving when transitioning from reduced to standard brightness.
Innovation Solution
An information processing apparatus and method that utilizes face detection processing to determine face orientation within specific angle ranges and adjusts screen brightness accordingly, incorporating detection cycle adjustments based on face orientation changes to improve responsiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If face detection processing is performed at a standard detection cycle, then power consumption is reduced, but responsiveness when the face turns forward is poor
Solution Approach 1:
The detection cycle is dynamically adjusted based on the detected face orientation. When the face is detected facing forward, the detection cycle is reduced to a shorter period to improve responsiveness. When the face is not facing forward, the detection cycle returns to a standard longer period to save power. This dynamic adjustment resolves the contradiction between responsiveness and power consumption.
2Loss of time
If the detection cycle is reduced to improve responsiveness, then screen brightness can be restored faster, but power consumption increases
Solution Approach 1:
The system applies different detection cycle qualities locally based on the face orientation state. Instead of uniformly reducing the detection cycle at all times, the system only reduces it when the face is facing forward, maintaining high detection frequency only when needed for responsiveness. This localized application of high detection frequency resolves the contradiction by minimizing time delay only when necessary while keeping power consumption low during other states.
3Speed
If face orientation detection is performed continuously at high frequency, then responsiveness is improved, but the system complexity increases
Solution Approach 1:
The system dynamically changes the detection frequency based on the operational state (face orientation). Rather than maintaining continuous high-frequency detection, the system switches between high-frequency detection (when face is forward) and low-frequency detection (when face is not forward). This dynamic state-based control achieves high detection speed when needed while avoiding the complexity of continuous high-frequency operation.
Data Source
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AI summary
The present invention is to improve responsiveness when detecting a face orientation to control the screen brightness of a display unit. An information processing apparatus includes a memory which temporarily stores image data of an image captured by an imaging unit, and a processor which processes the image data stored in the memory. The processor performs face detection processing to process the image data of the image stored in the memory in order to detect a face area with a face captured therein and an orientation of the face from the image, and brightness control processing to control the screen brightness of a display unit based on the orientation of the face detected by the face detection processing. Further, in the face detection processing, when the detected face orientation falls within a preset first angle range, the processor determines that the face orientation is a first orientation, and even when the detected face orientation is out of the first angle range, the processor determines that the face orientation is the first orientation depending on the amount of change in the detected orientation of the face changing in a direction of the first orientation.