Endoscope Depth Accuracy via Landmark Scope Correction
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Solution Overview
Problem
Existing endoscope systems face inaccuracies in acquiring depth information due to non-rigid body lumens, leading to incorrect scope information and subsequent depth information errors.
Innovation Solution
An image processing apparatus and method that includes a processor for acquiring time-series intraluminal images, recognizing landmarks, correcting scope information using landmark data, and calculating accurate depth information, ensuring reliable geometric information display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If scope information is acquired using sensors in a non-rigid lumen environment, then scope information can be obtained, but the accuracy of depth information deteriorates due to incorrect scope information
Solution Approach 1:
The system uses detected landmarks in the intraluminal image to provide feedback for correcting scope information. The correction unit adjusts the scope information based on the positional relationship between detected landmarks and reference landmarks, creating a closed-loop feedback mechanism that improves measurement accuracy despite the non-rigid lumen environment.
Solution Approach 2:
Landmarks serve as intermediary objects that mediate between the scope information from sensors and the final depth information calculation. By using landmarks as reference points visible in both the image and reference data, the system indirectly validates and corrects scope information without directly measuring it, resolving the accuracy issue in non-rigid environments.
2Measurement precision
If landmark recognition is performed to correct scope information, then depth information accuracy is improved, but processing complexity increases
Solution Approach 1:
Reference landmarks and their positional relationships are pre-established in reference data before the actual measurement process. This preliminary preparation allows the correction unit to quickly compare detected landmarks against known reference positions, reducing real-time processing complexity while maintaining high accuracy in depth information calculation.
Data Source
AI summary
An image processing apparatus, an image processing method, and a program capable of acquiring correct scope information and acquiring accurate depth information from an intraluminal image. In image processing apparatus (14) including a processor, the processor performs image acquisition processing of acquiring a time-series intraluminal image captured by a scope of an endoscope; scope information acquisition processing of acquiring scope information relating to a change of the scope; landmark recognition processing of recognizing a landmark in the intraluminal image; scope information correction processing of correcting the scope information using information relating to the landmark recognized in the landmark recognition processing; and depth information acquisition processing of acquiring depth information of the intraluminal image using the intraluminal image and the scope information corrected in the scope information correction processing.