AR Posture Correction Using Temporal Change Filtering

Solution Overview

Problem

Existing techniques for estimating camera position and posture in AR and VR technologies do not consider human perceptual characteristics, leading to user discomfort due to errors in position and posture corrections.

Innovation Solution

An information processing apparatus and method that includes a reducing unit to reduce changes in position or posture and a correcting unit to correct errors based on temporal change data, using a filter unit that performs lowpass filtering, detects abrupt changes, and applies correction processing to minimize user discomfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If correction processing is performed based on estimated position and posture data, then inconsistency in display is reduced, but user discomfort increases due to ignoring human perceptual characteristics

Engineering Contradiction:

Improvedisplay consistencyVSAvoiduser discomfort

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies parameter changes by modifying the correction processing based on human perceptual characteristics. Specifically, it changes the correction parameters (position and posture correction values) according to the degree of temporal change detected in the estimated data. When temporal change is large, correction is reduced or suspended, matching human perception thresholds. This resolves the contradiction by adjusting correction intensity dynamically, maintaining display consistency while preventing user discomfort.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamics by making the correction processing adaptive rather than static. The correction amount is dynamically adjusted based on temporal change detection in the estimated position and posture data. The system transitions between different correction modes (full correction, reduced correction, suspension) depending on real-time conditions, thereby resolving the contradiction between maintaining consistency and avoiding discomfort.

Inventive Principle:

Principle #15Dynamics

2Object-affected harmful factors

If reduction processing is applied to reduce changes in position or posture, then user discomfort is reduced, but reduction errors are introduced

Engineering Contradiction:

Improveuser discomfortVSAvoidposition and posture accuracy

Core Design Contradiction:

Object-affected harmful factorsVSMeasurement precision

Solution Approach 1:

The patent applies feedback by continuously monitoring the temporal change in estimated position and posture data, comparing it against thresholds, and adjusting the correction processing accordingly. The system uses the detected temporal change as feedback to determine whether to apply full correction, reduced correction, or suspend correction, thereby resolving the contradiction between reducing discomfort and maintaining accuracy.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent implements dynamics by making the correction processing adaptive rather than static. The correction amount is dynamically adjusted based on temporal change detection in the estimated position and posture data. The system transitions between different correction modes (full correction, reduced correction, suspension) depending on real-time conditions, thereby resolving the contradiction between maintaining consistency and avoiding discomfort.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11232581B2Information processing apparatus, information processing method, and recording medium

Publication Date: 2022.01.25 SONY GROUP CORP

AI summary

An information processing apparatus includes a reducing unit that performs reduction processing to reduce a position or a posture. The information processing apparatus further includes a correcting unit that performs correction processing to correct a reduction error that is caused by the reduction processing, based on temporal change data indicating changes over time relating to the position or the posture.