3D Medical Observation Apparatus Annotation Depth Positioning
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Solution Overview
Problem
Current medical three-dimensional observation apparatuses face challenges in accurately superimposing annotations on three-dimensional images without obscuring the specimen, particularly when the specimen's depth changes, leading to an unnatural display and difficulty in precise annotation placement.
Innovation Solution
A medical three-dimensional observation apparatus with binocular imaging systems, a calculating unit for depth position calculation, and an index superimposing unit that adjusts the display position of annotations based on depth and two-dimensional position information, ensuring annotations are always in front of the specimen and avoiding overlap with the specimen's image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If annotations are superimposed on three-dimensional images without depth consideration, then annotation placement is simple, but the annotation may obscure the specimen or appear unnatural when the specimen's depth changes
Solution Approach 1:
The patent extends annotation placement from two-dimensional image space to three-dimensional space by calculating depth positions based on binocular disparity. The annotation image is positioned in 3D space coordinates (x, y, z) where z represents depth, allowing the annotation to maintain proper spatial relationship with the specimen regardless of depth changes, thus resolving the contradiction between simple placement and accurate positioning.
2Device complexity
If the annotation image is always displayed at a fixed depth position, then the annotation placement is straightforward, but the annotation may overlap with the specimen when the specimen's depth varies
Solution Approach 1:
The patent implements dynamic adjustment of annotation depth position based on the specimen's actual depth at the annotated location. The system calculates the depth position of the annotation image to match the specimen's depth, ensuring the annotation appears in front of the specimen without overlapping. This dynamic positioning resolves the contradiction between simple processing and maintaining specimen visibility.
3Measurement precision
If depth calculation is performed for precise annotation positioning, then annotation accuracy is improved, but the system complexity increases
Solution Approach 1:
The patent utilizes binocular disparity feedback to calculate depth information. By comparing the positional difference of the same specimen point between left and right eye images, the system derives depth data that is then used to position the annotation image accurately in 3D space. This feedback mechanism achieves precise positioning without requiring complex external depth sensing equipment.
Data Source
AI summary
A medical three-dimensional observation apparatus includes at least a pair of imaging units, a three-dimensional image processing unit, a calculating unit, and an index superimposing unit. The imaging units image a .specimen from different viewpoints. The three-dimensional image processing unit displays a three-dimensional image of the specimen on a display in accordance with images of the specimen. The calculating unit calculates a region of a three-dimensional reproduction space of the display in which the three-dimensional image of the specimen is to be reproduced. The index superimposing unit superimposes an annotation image on a depth position corresponding to the region in which the three-dimensional image is reproduced.