公开(公告)号：US11624700B2

公开(公告)日：2023-04-11

申请号：US17821003

申请日：2022-08-19

申请人： Microsoft Technology Licensing, LLC

发明人： Ariel Gomez Diaz ,  David Lara Saucedo ,  Peter Gyula Scholtz ,  Ioan Alexandru Stefanovici ,  Pashmina Jonathan Cameron ,  Govert Michael Verkes ,  Richard John Black ,  Timothy John Deegan ,  James Hilton Clegg ,  Antony Ian Taylor Rowstron

IPC分类号： G01N21/23 ,  G01N21/31

摘要： One example provides a system for reading birefringent data. The system comprises one or more light sources, a first polarization state generator positioned to generate first polarized light from light of a first wavelength band output by the one or more light sources, a second polarization state generator positioned to generate second polarized light from light of a second wavelength band output by the one or light sources, an image sensor configured to acquire an image of the sample region via the first polarized light and the second polarized light, a polarization state analyzer disposed between the sample region and the image sensor, a first bandpass filter configured to pass light of the first wavelength band onto the image sensor, and a second bandpass filter configured to pass light of the second wavelength band onto the image sensor.

公开(公告)号：US11422086B2

公开(公告)日：2022-08-23

申请号：US16867359

申请日：2020-05-05

申请人： Microsoft Technology Licensing, LLC

发明人： Ariel Gomez Diaz ,  David Lara Saucedo ,  Peter Gyula Scholtz ,  Ioan Alexandru Stefanovici ,  Pashmina Jonathan Cameron ,  Govert Michael Verkes ,  Richard John Black ,  Timothy John Deegan ,  James Hilton Clegg ,  Antony Ian Taylor Rowstron

IPC分类号： G01N21/23 ,  G01N21/31

摘要： One example provides a system for reading birefringent data. The system comprises one or more light sources, a first polarization state generator positioned to generate first polarized light from light of a first wavelength band output by the one or more light sources, a second polarization state generator positioned to generate second polarized light from light of a second wavelength band output by the one or light sources, an image sensor configured to acquire an image of the sample region via the first polarized light and the second polarized light, a polarization state analyzer disposed between the sample region and the image sensor, a first bandpass filter configured to pass light of the first wavelength band onto the image sensor, and a second bandpass filter configured to pass light of the second wavelength band onto the image sensor.

公开(公告)号：US11341620B2

公开(公告)日：2022-05-24

申请号：US16867323

申请日：2020-05-05

申请人： Microsoft Technology Licensing, LLC

发明人： Ariel Gomez Diaz ,  David Lara Saucedo ,  Peter Gyula Scholtz ,  Patrick Neil Anderson ,  Rokas Drevinskas ,  Richard John Black ,  James Hilton Clegg

IPC分类号： G06T5/00 ,  G06T5/20

摘要： One example provides a computer-implemented method for reading data stored as birefringence values in a storage medium. The method comprises acquiring an image of a voxel of the storage medium, applying a first low-pass filter with a first cutoff frequency to the image of the voxel to obtain a first background image, applying a second low-pass filter with a second cutoff frequency to the image of the voxel to obtain a second background image, the second cutoff frequency being different than the first cutoff frequency, determining an enhanced background image from the first background image and the second background image, determining birefringence values for the enhanced background image, determining birefringence values for the image of the voxel, and correcting the birefringence values for the image of the voxel based upon the birefringence values for the enhanced background image.