Head-Mount Display Camera Play Area Detection
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Solution Overview
Problem
Existing information processing systems for acquiring state information in real-world environments using photographed images face challenges in maintaining accuracy due to variations in photography situations and environments, leading to unstable information acquisition and increased production costs, weight, and power consumption.
Innovation Solution
An information processing device and method that adjusts photographing parameters based on estimated brightness to analyze photographed images, allowing for stable detection of play areas and real object information without additional sensors, by using a camera mounted on a head-mount display to acquire and process 3D information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of sensors and devices is increased to improve information accuracy, then measurement precision is improved, but device complexity and production cost increase
Solution Approach 1:
The camera performs multiple functions: it captures images for display purposes and simultaneously serves as a sensing device for acquiring real-world information. By making the camera multi-functional, the patent eliminates the need for separate sensors, thereby maintaining information accuracy while reducing device complexity and production cost
Solution Approach 2:
The camera serves itself by using its primary function (image capture for display) to also perform the secondary function of environmental sensing. The same imaging data used for display purposes is processed to extract real-world information, making the system self-sufficient without requiring additional dedicated sensing components
2Measurement precision
If the number of sensors and devices is increased to improve information accuracy, then measurement precision is improved, but weight increases
Solution Approach 1:
The camera is designed to perform both display-related imaging and environmental sensing functions simultaneously. This multi-functionality allows the system to maintain high information accuracy while avoiding the weight penalty that would result from adding separate sensing devices
Solution Approach 2:
The camera utilizes its own imaging capability to serve dual purposes: providing visual content for display and generating data for real-world information extraction. This self-service approach eliminates the need for additional hardware, thereby preventing weight increase
3Measurement precision
If the number of sensors and devices is increased to improve information accuracy, then measurement precision is improved, but power consumption increases
Solution Approach 1:
The camera system is configured to simultaneously perform display imaging and environmental sensing without requiring separate power sources for each function. By consolidating these functions into a single device, the patent maintains high information accuracy while minimizing power consumption that would result from operating multiple independent devices
Solution Approach 2:
The camera uses the same imaging operation to fulfill both display requirements and sensing requirements. This self-service mechanism ensures that the power consumed for image capture serves dual purposes, thereby maintaining information accuracy while avoiding the additional power consumption that would result from running separate sensing devices
4Reliability
If photographing parameters are adjusted according to brightness to improve information acquisition stability, then reliability is improved, but device complexity increases
Solution Approach 1:
The analysis conditions are made dynamic by automatically adjusting them based on the estimated brightness of the photographed image. The play area control section modifies analysis parameters in real-time according to lighting conditions, which improves the reliability of information acquisition across varying environments without requiring complex manual configuration or multiple fixed-mode devices
Solution Approach 2:
The system implements a feedback mechanism where the estimated brightness of the photographed image is used to adjust the analysis conditions. The play area control section continuously monitors brightness levels and adapts the analysis parameters accordingly, creating a closed-loop control system that improves reliability while maintaining relatively simple device architecture
Data Source
AI summary
There is provided an information processing device including a photographed-image acquisition section that acquires a photographed image taken by a camera mounted on a head-mount display, and a photographing parameter that is adjusted according to a brightness with use of the camera, and a play area control section that detects a play area for defining a movable range of a user by analyzing the photographed image while changing an analysis condition according to an estimated brightness on the basis of the photographing parameter, and then, acquiring 3D information regarding a real object.