Stereoscopic Image Parallax Control for Observer Comfort

Solution Overview

Problem

Existing stereoscopic image display systems burden observers with excessively large parallax amounts when enlarging images, as alerts and adjustments are displayed after the image has already been displayed with unsuitable parallax, causing discomfort.

Innovation Solution

A stereoscopic image display control device that determines if the parallax amount exceeds a threshold during enlargement and adjusts the display to maintain the parallax within acceptable limits, preventing excessive enlargement and displaying the image in a way that reduces observer burden, such as through vibration or alternate scaling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If the stereoscopic image is enlarged to increase the display size, then the image can be displayed in a larger scale, but the parallax amount becomes excessively large causing burden on the observer's eyes

Engineering Contradiction:

Improvedisplay areaVSAvoidobserver burden

Core Design Contradiction:

Area of moving objectVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary determination of the parallax amount before completing the enlargement display. When the determined parallax amount exceeds the threshold value, the system prevents the enlargement operation from completing, thereby avoiding the display of stereoscopic images with excessively large parallax amounts that would burden the observer's eyes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system incorporates feedback by continuously monitoring the parallax amount during enlargement operations. The parallax amount determination unit provides feedback to the enlargement display control unit, which adjusts or prevents the enlargement based on whether the parallax amount remains within the acceptable range, thus resolving the contradiction between display size and observer comfort.

Inventive Principle:

Principle #23Feedback

2Object-affected harmful factors

If the parallax amount is adjusted during enlargement to reduce observer burden, then the observer comfort is improved, but the enlargement operation becomes more complex and may not achieve the desired display size

Engineering Contradiction:

Improveobserver burdenVSAvoidenlargement control complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The system performs preliminary determination of the parallax amount before completing the enlargement display. When the determined parallax amount exceeds the threshold value, the system prevents the enlargement operation from completing, thereby avoiding the display of stereoscopic images with excessively large parallax amounts that would burden the observer's eyes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system changes the parameter of magnification dynamically during the enlargement operation. When the parallax amount exceeds the threshold, the system adjusts the magnification parameter to a lower value that keeps the parallax amount within the acceptable range, thus reducing observer burden while maintaining a reasonable display size.

Inventive Principle:

Principle #35Parameter changes

3Loss of information

If the alert is displayed when parallax amount becomes unsuitable during enlargement, then the user is notified of the issue, but the alert is displayed after the image has already been displayed with large parallax causing burden

Engineering Contradiction:

Improveinformation about parallax statusVSAvoidobserver burden

Core Design Contradiction:

Loss of informationVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary determination of the parallax amount before completing the enlargement display. When the determined parallax amount exceeds the threshold value, the system prevents the enlargement operation from completing, thereby avoiding the display of stereoscopic images with excessively large parallax amounts that would burden the observer's eyes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system incorporates feedback by continuously monitoring the parallax amount during enlargement operations. The parallax amount determination unit provides feedback to the enlargement display control unit, which adjusts or prevents the enlargement based on whether the parallax amount remains within the acceptable range, thus resolving the contradiction between display size and observer comfort.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS9270982B2Stereoscopic image display control device, imaging apparatus including the same, and stereoscopic image display control method

Publication Date: 2016.02.23 FUJIFILM CORP

AI summary

A system control unit 11 includes a first step of causing a stereoscopic image to be displayed in an enlarged scale according to an instruction on a display device 23, and a second step of determining, when the stereoscopic image is enlarged at a magnification according to the instruction, whether or not a parallax amount of the enlarged stereoscopic image displayed on the display device 23 is greater than a threshold value, in which in the first step, when the instruction for enlarging the stereoscopic image at the magnification at which the parallax amount is greater than the threshold value is made, the enlarged stereoscopic image to be displayed on the display device 23 after the instruction is finished becomes the enlarged stereoscopic image in the enlarged scale at the magnification at which the parallax amount is not greater than the threshold value.