Virtual Image Clarity Adjustment for Motion Sickness Reduction
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Solution Overview
Problem
Existing methods to reduce visually-induced motion sickness in virtual image displays, such as Japanese Patent Laid-Open No. 2017-58493, may decrease the visual recognizability of objects by reducing resolution and contrast, which is not optimal for maintaining image quality.
Innovation Solution
An image processing apparatus that adjusts the clearness of objects in a virtual image based on their movement relative to the virtual camera, using blurring, resolution reduction, or brightness changes, to prioritize the clarity of objects with smaller movements while reducing the clarity of those with larger movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the resolution and contrast of the entire image are reduced to reduce visually-induced motion sickness, then the motion sickness is reduced, but the visual recognizability of the object of interest decreases
Solution Approach 1:
The patent applies different image processing treatments to different regions of the image based on the movement amount of objects in each region. Objects with small movement amounts maintain their original resolution and contrast, while objects with large movement amounts have their resolution and contrast reduced. This local differentiation resolves the contradiction by preserving visual quality where needed while reducing motion sickness effects where movement is significant.
Solution Approach 2:
The patent segments the image into multiple regions based on object movement characteristics. By calculating the movement amount of each object and comparing it to a threshold, the image is divided into regions requiring different processing levels. This segmentation allows selective application of resolution and contrast reduction only to moving objects, maintaining overall image quality while addressing motion sickness.
2Object-affected harmful factors
If the resolution and contrast of the peripheral portion of the image are reduced to reduce visually-induced motion sickness, then the motion sickness is reduced, but the clearness of objects in the displayed image decreases
Solution Approach 1:
The patent implements local quality differentiation by assessing the movement amount of each object individually. Rather than uniformly reducing quality across the entire image or peripheral regions, the system selectively applies resolution and contrast reduction only to objects exceeding a movement threshold. This ensures that stationary or slowly moving objects maintain their original clearness while fast-moving objects contribute less to motion sickness.
Solution Approach 2:
The patent introduces dynamic adjustment of image quality parameters based on real-time object movement characteristics. The resolution and contrast reduction is not static but adapts to the movement amount of each object, creating a dynamic balance between reducing motion sickness and maintaining visual clarity. This dynamic approach allows the system to respond to changing scene conditions while preserving object clearness where movement is minimal.
Data Source
AI summary
An image processing apparatus in an embodiment of the present disclosure includes: an obtaining unit configured to obtain viewpoint information indicating a change over time in a viewpoint corresponding to a virtual image; and a generation unit configured to generate the virtual image from the viewpoint according to the viewpoint information obtained by the obtaining unit such that among a plurality of objects included in the generated virtual image, an object whose position in the virtual image changes by a first amount according to the change of the viewpoint indicated by the viewpoint information is lower in clearness than an object whose position in the virtual image changes by a second amount smaller than the first amount according to the change of the viewpoint.


