公开(公告)号：US08822875B2

公开(公告)日：2014-09-02

申请号：US13245334

申请日：2011-09-26

申请人： Paul J. L. Webster ,  James M. Fraser ,  Victor X. D. Yang

发明人： Paul J. L. Webster ,  James M. Fraser ,  Victor X. D. Yang

IPC分类号： B23K26/03 ,  B23K26/20 ,  G01N21/84 ,  A61B18/20 ,  G01J3/453 ,  A61B17/00 ,  A61B18/00

CPC分类号： B23K26/032 ,  A61B18/20 ,  A61B2017/00057 ,  A61B2018/00642 ,  B22F3/105 ,  B22F3/1055 ,  B22F2003/1057 ,  B22F2998/10 ,  B23K1/0056 ,  B23K9/0956 ,  B23K15/0013 ,  B23K15/02 ,  B23K15/08 ,  B23K15/085 ,  B23K26/03 ,  B23K26/20 ,  B23K26/348 ,  B23K26/362 ,  B23K26/382 ,  B23K2103/42 ,  B23K2103/52 ,  B28B1/001 ,  B28B17/0081 ,  B29C64/153 ,  B29C64/386 ,  B33Y30/00 ,  C21D10/00 ,  C22F3/00 ,  G01B9/0203 ,  G01B11/22 ,  G01J3/453 ,  G01N21/84 ,  G01N2021/8416

摘要： Methods and systems are provided for using optical interferometry in the context of material modification processes such as surgical laser or welding applications. An imaging optical source that produces imaging light. A feedback controller controls at least one processing parameter of the material modification process based on an interferometry output generated using the imaging light. A method of processing interferograms is provided based on homodyne filtering. A method of generating a record of a material modification process using an interferometry output is provided.

摘要翻译： 提供的方法和系统用于在诸如手术激光或焊接应用的材料改性过程的背景下使用光学干涉测量。 产生成像光的成像光源。 基于使用成像光产生的干涉测量输出，反馈控制器控制材料修改过程的至少一个处理参数。 基于零差滤波提供处理干涉图的方法。 提供了使用干涉测量输出来生成材料修改处理的记录的方法。

公开(公告)号：US11523736B2

公开(公告)日：2022-12-13

申请号：US16764426

申请日：2018-11-16

申请人： Victor X. D. Yang ,  Chaoliang Chen

发明人： Victor X. D. Yang ,  Chaoliang Chen

IPC分类号： A61B3/12 ,  G16H30/40 ,  A61B3/00 ,  A61B3/10 ,  A61B5/00 ,  G06T7/00 ,  G06T11/00

摘要： Systems and methods are provided for performing optical coherence tomography angiography for the rapid generation of en face images. According to one example embodiment, differential interferograms obtained using a spectral domain or swept source optical coherence tomography system are convolved with a Gabor filter, where the Gabor filter is computed according to an estimated surface depth of the tissue surface. The Gabor-convolved differential interferogram is processed to produce an en face image, without requiring the performing of a fast Fourier transform and k-space resampling. In another example embodiment, two interferograms are separately convolved with a Gabor filter, and the amplitudes of the Gabor-convolved interferograms are subtracted to generate a differential Gabor-convolved interferogram amplitude frame, which is then further processed to generate an en face image in the absence of performing a fast Fourier transform and k-space resampling. The example OCTA methods disclosed herein are shown to achieve faster data processing speeds compared to conventional OCTA algorithms.