Ophthalmic Image Mapping for 3D OCT Color Correlation
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Solution Overview
Problem
Conventional optical coherence tomography systems face difficulties in associating three-dimensional images with two-dimensional images, making it challenging to specify the color or structure of specific sites in the eye, and there is a lack of association between cross-sectional information and other eye images.
Innovation Solution
An ophthalmic device that includes a correspondence definition data generation unit to associate three-dimensional image positions with two-dimensional image positions, allowing the three-dimensional structure of the eye to be colored based on the two-dimensional image, using a control unit to display a three-dimensional image colored with the colors shown in the two-dimensional image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If three-dimensional image and two-dimensional image are acquired separately, then both images can be obtained, but it is difficult to associate the specific sites between the two images
Solution Approach 1:
The patent introduces correspondence definition data as an intermediary element that links three-dimensional image data and two-dimensional image data. This data establishes positional relationships between pixels in both images, enabling color information from the two-dimensional image to be accurately mapped to corresponding locations in the three-dimensional image without requiring complex direct association methods
2Measurement precision
If conventional separate image acquisition is used, then inspection can be performed, but diagnostic precision is reduced due to difficulty in specifying color of specific sites
Solution Approach 1:
The patent merges color information from two-dimensional images with structural information from three-dimensional images by using correspondence definition data to map colors to specific three-dimensional sites. This combination allows examiners to easily specify the color of any site in the three-dimensional image, thereby improving diagnostic precision while maintaining ease of operation
Data Source
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AI summary
Provided is a technique for associating a local structure of an eye (E) to be examined with a color developing in the front of the eye (E) to be examined. An ophthalmic device includes: a two-dimensional image acquisition unit (240a) that acquires a two-dimensional image by photographing the front of an eye (E) to be examined with a color camera; a three-dimensional image acquisition unit (240b) that acquires a three-dimensional image of the eye (E) to be examined by optical coherence tomography; and a correspondence definition data generation unit (240c) that generates correspondence definition data (245d) in which the position of a predetermined site of the eye to be examined in the three-dimensional image when the predetermined site is photographed as the three-dimensional image is associated with the position of the predetermined site in the two-dimensional image when the predetermined site is photographed as the two-dimensional image.