360-Degree Image Cube Map Unwrapping for Screen Reader Accessibility
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Solution Overview
Problem
360-degree images and videos captured by omnidirectional cameras are not compatible with visual screen readers, which are essential for visually impaired users, as they require additional processing to be rendered accessible.
Innovation Solution
A method that extracts multiple still images from a 360-degree image to form a cube, unwraps it into a cross image format, and adds HTML elements to make the content readable by screen readers, allowing for the remapping of latitude/longitude coordinates and renaming of images with associated labels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 360-degree images are displayed in immersive environments, then user immersion and engagement are improved, but accessibility to screen readers deteriorates
Solution Approach 1:
The patent divides the 360-degree spherical image into multiple discrete image segments (typically six images forming a cube map: front, back, left, right, top, bottom). This segmentation allows the continuous spherical environment to be broken down into discrete, processable units that can be systematically converted into accessible formats while preserving the immersive experience when viewed together.
Solution Approach 2:
The patent introduces an intermediary conversion process that transforms the 360-degree spherical image format into a cross-shaped arrangement of segmented images with added metadata. This intermediary format serves as a bridge between the immersive spherical representation and screen reader requirements, enabling both formats to coexist and be properly interpreted by assistive technologies.
2Adaptability or versatility
If 360-degree images are processed into cube maps, then immersive display capability is improved, but format compatibility with screen readers worsens
Solution Approach 1:
The patent transforms the three-dimensional spherical image representation into a two-dimensional cross-shaped arrangement of images. This dimensional change flattens the spherical geometry into a planar format that screen readers can process, while the spatial relationships and immersive context are preserved through the cross configuration and associated metadata.
3Ease of operation
If HTML elements are added to images, then screen reader accessibility is improved, but image processing complexity increases
Solution Approach 1:
The patent performs preliminary processing of the 360-degree image by first segmenting it into a cube map, then unwrapping it into a cross shape before adding HTML elements. This preliminary structural preparation creates a standardized framework that simplifies the subsequent addition of accessibility metadata, as the HTML elements can be systematically inserted into the pre-processed cross-shaped image structure rather than directly into the complex spherical format.
Data Source
AI summary
A method for displaying content accessible to screen readers includes extracting a multiple of still images from a 360-degree image to form a cube of images; and unwrapping the cube of images into a cross image to render the image readable by a screen reader.