Image processing device, method for operating the image processing device, and operating program for the image processing device.
The image processing device addresses the issue of local solutions in ICP alignment by applying constraints to candidate parameters, ensuring accurate alignment between ultrasound and three-dimensional images.
JP2026120004APending Publication Date: 2026-07-21FUJIFILM CORP
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- FUJIFILM CORP
- Filing Date
- 2025-01-08
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
The ICP algorithm used for aligning ultrasound and three-dimensional images can fall into local solutions due to large discrepancies in initial settings, leading to incorrect alignment results.
Method used
An image processing device that repeatedly selects reference and target points from ultrasound and three-dimensional images, derives candidate conversion parameters, and applies constraints to ensure accurate alignment by transforming and calculating similarity only for candidates satisfying positional and orientational constraints.
Benefits of technology
Prevents alignment from falling into local solutions and suppresses incorrect results, ensuring accurate alignment between ultrasound and three-dimensional images.
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Smart Images
Figure 2026120004000001_ABST
Abstract
The present invention provides an image processing device, an operating method for the image processing device, and an operating program for the image processing device that can prevent the alignment result from falling into a local solution and suppress the output of clearly incorrect alignment results when performing alignment between an ultrasound image and a three-dimensional image. [Solution] The acquisition unit acquires the patient's CT image. The generation unit acquires the patient's US image by generating it from the echo signal. The selection unit repeatedly selects multiple reference points from the first point group of the US image and multiple target points from the second point group of the CT image. The derivation unit derives candidate parameters each time reference points and target points are selected. The determination unit determines whether the candidate parameters satisfy the constraints regarding the position and orientation of the ultrasound probe during US image acquisition.
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