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一种新型的乳房和颌骨重建手术远程呈现中的混合现实技术。

A novel mixed reality in breast and constructive jaw surgical tele-presence.

机构信息

School of Computing and Mathematics, Charles Sturt University, Sydney, Australia.

School of Computing and Mathematics, Charles Sturt University, Sydney, Australia.

出版信息

Comput Methods Programs Biomed. 2019 Aug;177:253-268. doi: 10.1016/j.cmpb.2019.05.025. Epub 2019 Jun 4.

Abstract

BACKGROUND AND AIM

Surgical telepresence has been implemented using Mixed reality (MR) but, MR is theory based and only used for investigating research. The Aim of this paper is to propose and implement a new solution by merging augmented video (generating in local site) and virtual expertise surgeon hand (remote site). This system is to improve the visualization of surgical area, overlay accuracy in the merged video without having any discoloured patterns on hand, smudging artefacts on surgeon hand boundary and occluded areas of surgical area.

METHODOLOGY

The Proposed system consists of an Enhanced Multi-Layer Mean Value Cloning (EMLMV) algorithm that improves the overlay accuracy, visualization accuracy and the processing time. This proposed algorithm includes trimap and alpha matting as a pre-processing stage of merging process, which helps to remove the smudging and discoloured artefacts surrounded by remote surgeon hand.

RESULTS

Results showing that the proposed system improved the accuracy by reducing the overlay error of merging image from 1.3 mm (Millimeter) to 0.9 mm. Furthermore, it improves the visibility of surgeon hand in the final merged image from 98.4% (visibility of pixels) to 99.1% (visibility of pixels). Similarly, the processing time in our proposed solution is reduced, which is computed as 10 s to produce 50 frames, whilst, the state of art solution computes 11 s for the same number of frames.

CONCLUSION

The proposed system focuses on the merging of augmented reality video (local site), and the virtual reality video (remote site) with the accurate visualization. we consider discoloured areas, smudging artefacts and occlusion as the main aspects to improve the accuracy of merged video in terms of overlay error and visualization error. So, the proposed system would produce the merged video with the removal of artefacts around the expert surgeon hand.

摘要

背景与目的

手术遥控已经通过混合现实 (MR) 实现,但 MR 是基于理论的,仅用于研究。本文的目的是提出并实现一种新的解决方案,即将增强的视频(在本地站点生成)和虚拟专家外科医生手(远程站点)合并。该系统旨在提高手术区域的可视化效果,在合并视频中提高叠加精度,同时避免在外科医生手上出现任何变色模式、模糊伪影以及手术区域的遮挡区域。

方法

所提出的系统由增强的多层均值克隆 (EMLMV) 算法组成,该算法可以提高叠加精度、可视化精度和处理时间。该算法包括三值图和 alpha 遮罩作为合并过程的预处理阶段,可以帮助去除远程外科医生手周围的模糊和变色伪影。

结果

结果表明,该系统通过将合并图像的叠加误差从 1.3 毫米(毫米)降低到 0.9 毫米,提高了准确性。此外,它还提高了最终合并图像中外科医生手的可见度,从 98.4%(像素可见度)提高到 99.1%(像素可见度)。同样,我们提出的解决方案的处理时间也缩短了,计算为 10 秒生成 50 帧,而最新技术解决方案生成相同数量的帧需要 11 秒。

结论

所提出的系统专注于增强现实视频(本地站点)和虚拟现实视频(远程站点)的合并,以实现准确的可视化。我们将变色区域、模糊伪影和遮挡视为提高合并视频叠加误差和可视化误差精度的主要方面。因此,该系统将生成去除专家外科医生手周围伪影的合并视频。

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