Medical Image Bone Region Viewpoint Auto-Selection
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Solution Overview
Problem
Existing image processing methods for medical images, particularly those involving bone structures, require complex operations to achieve optimal viewpoint and sight line direction, making it difficult to display desired regions effectively.
Innovation Solution
An image processing apparatus and method that automatically determines the optimal viewpoint and sight line direction for displaying selected bone regions by using a bone part unit, with pre-defined tables for initial values and user input options to simplify the process, allowing for easy selection and display of bone regions with optimal viewing parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional method using mouse and keyboard is used to adjust viewpoint position and sight line direction, then the viewpoint and sight line direction can be changed, but the operation becomes very complicated requiring a number of operations
Solution Approach 1:
The system pre-calculates and stores optimal viewpoint positions and sight line directions for each bone region in advance. When a user selects a bone region, the corresponding optimal viewpoint and sight line direction are automatically retrieved and applied, eliminating the need for manual adjustment operations.
Solution Approach 2:
The system automatically determines the optimal viewpoint position and sight line direction based on the selected bone region without requiring user intervention. The apparatus performs self-adjustment by automatically setting the viewpoint to a position that minimizes hiding of bone structures and sets the sight line direction to provide the best observation angle.
2Adaptability or versatility
If manual adjustment of viewpoint and sight line direction is performed, then the viewpoint position and sight line direction can be changed, but the number of operations required increases significantly
Solution Approach 1:
Optimal viewpoint positions and sight line directions are pre-calculated for each bone region based on anatomical knowledge and geometric optimization. These pre-determined parameters are stored in the system, allowing automatic retrieval and application when a bone region is selected, thereby maintaining adaptability while reducing operational complexity.
Solution Approach 2:
The system automatically changes the viewpoint position and sight line direction parameters based on the selected bone region. By using pre-calculated optimal parameter sets for different bone regions, the system maintains versatility in displaying different anatomical structures while simplifying the user interface to require only bone region selection.
3Reliability
If volume rendering is used to confirm bone extraction results, then the bone extraction result can be visualized, but multiple structural parts overlay and cause partial hiding depending on viewpoint position
Solution Approach 1:
The system pre-determines optimal viewpoint positions that minimize the hiding of bone structures through overlay of multiple structural parts. By calculating and storing these optimal viewpoints in advance for each bone region, the system ensures that when volume rendering is performed, the bone extraction results are displayed with maximum visibility and minimum obscuration.
Solution Approach 2:
The system automatically adjusts the viewpoint position parameter to an optimal value that reduces overlapping and hiding of bone structures. By changing the viewpoint position to pre-calculated optimal positions based on the selected bone region, the system improves the detectability and measurement accuracy of bone extraction results in volume rendered images.
Data Source
AI summary
An image processing apparatus characterized by including a device which recognizes, in a bone part unit, a bone area extracted from a medical image and including a bone region constituted of several bone parts, a device which is used to select the bone region to be displayed, a device which is used to determine the bone parts corresponding to the selected bone region, a device which is used to determine a viewpoint and a sight line direction for observing the selected bone region, a device which generates a volume rendering image which displays the bone area with the viewpoint and the sight line direction, based on the bone area of the medical image recognized in the bone part unit, and the determined viewpoint and sight line direction, and a device which is used to conduct control to display the generated volume rendering image.