Patents by Inventor Wolfgang Heidrich
Wolfgang Heidrich has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11877102Abstract: A new projector design combines one spatial light modulator that affects only the phase of the illumination, and one spatial light modulator that only affects its amplitude (intensity). The phase-only modulator curves the wavefront of light and acts as a pre-modulator for a conventional amplitude modulator. This approach works with both white light and laser illumination, generating a coarse image representation efficiently, thus enabling, within a single image frame, significantly elevated highlights as well as darker black levels while reducing the overall light source power requirements.Type: GrantFiled: December 12, 2022Date of Patent: January 16, 2024Assignee: MTT Innovation IncorporatedInventors: Gerwin Damberg, James Gregson, Wolfgang Heidrich
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Patent number: 11874178Abstract: A wavefront sensor includes a mask and a sensor utilized to capture a diffraction pattern generated by light incident to the mask. A reference image is captured in response to a plane wavefront incident on the mask, and another measurement image is captured in response to a distorted wavefront incident on the mask. The distorted wavefront is reconstructed based on differences between the reference image and the measurement image.Type: GrantFiled: June 22, 2021Date of Patent: January 16, 2024Assignee: King Abdullah University of Science and TechnologyInventors: Congli Wang, Xiong Dun, Qiang Fu, Wolfgang Heidrich
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Publication number: 20230179749Abstract: A new projector design combines one spatial light modulator that affects only the phase of the illumination, and one spatial light modulator that only affects its amplitude (intensity). The phase-only modulator curves the wavefront of light and acts as a pre-modulator for a conventional amplitude modulator. This approach works with both white light and laser illumination, generating a coarse image representation efficiently, thus enabling, within a single image frame, significantly elevated highlights as well as darker black levels while reducing the overall light source power requirements.Type: ApplicationFiled: December 12, 2022Publication date: June 8, 2023Inventors: Gerwin DAMBERG, James GREGSON, Wolfgang HEIDRICH
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Patent number: 11657523Abstract: The microlens amplitude masks for flying pixel removal in time-of-flight imaging includes systems, devices, methods, and instructions for image depth determination, including receiving an image, adding noise to the image, determining a set of correlation images, each correlation image having a varying phase offset, for each pixel of the image, generating a masked pixel by applying a mask array, and for each masked pixel, determining the depth of the masked pixel to generate a depth map for the image on a per pixel basis.Type: GrantFiled: March 17, 2022Date of Patent: May 23, 2023Assignees: The Trustees of Princeton University, King Abdullah University of Science and TechnologyInventors: Ilya Chugunov, Seung-Hwan Baek, Qiang Fu, Wolfgang Heidrich, Felix Heide
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Publication number: 20230118593Abstract: The microlens amplitude masks for flying pixel removal in time-of-flight imaging includes systems, devices, methods, and instructions for image depth determination, including receiving an image, adding noise to the image, determining a set of correlation images, each correlation image having a varying phase offset, for each pixel of the image, generating a masked pixel by applying a mask array, and for each masked pixel, determining the depth of the masked pixel to generate a depth map for the image on a per pixel basis.Type: ApplicationFiled: March 17, 2022Publication date: April 20, 2023Inventors: Ilya Chugunov, Seung-Hwan Baek, Qiang` Fu, Wolfgang Heidrich, Felix Heide
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Patent number: 11557042Abstract: A method for tracking moving particles in a fluid. The method includes illuminating the moving particles with an illumination sequence of patterns generated by a light projector; measuring with a single camera light intensities reflected by the moving particles; calculating, based on the measured light intensity, digital coordinates (x?, y?, z?) of the moving particles; determining a mapping function f that maps the digital coordinates (x?, y?, z?) of the moving particles to physical coordinates (x, y, z) of the moving particles; and calculating the physical coordinates (x, y, z) of the moving particles based on the mapping function f. The illumination sequence of patterns is generated with a single wavelength, and light emitted by the projector is perpendicular to light received by the single camera.Type: GrantFiled: April 9, 2019Date of Patent: January 17, 2023Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Sigurdur Tryggvi Thoroddsen, Andres A. Aguirre-Pablo, Wolfgang Heidrich, Jinhui Xiong, Abdulrahman B. Aljedaani, Ramzi Idoughi
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Patent number: 11558590Abstract: A new projector design combines one spatial light modulator that affects only the phase of the illumination, and one spatial light modulator that only affects its amplitude (intensity). The phase-only modulator curves the wavefront of light and acts as a pre-modulator for a conventional amplitude modulator. This approach works with both white light and laser illumination, generating a coarse image representation efficiently, thus enabling, within a single image frame, significantly elevated highlights as well as darker black levels while reducing the overall light source power requirements.Type: GrantFiled: September 30, 2020Date of Patent: January 17, 2023Assignee: MTT Innovation IncorporatedInventors: Gerwin Damberg, James Gregson, Wolfgang Heidrich
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Patent number: 11501724Abstract: Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the display layer. In another technique, the light source layer's point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.Type: GrantFiled: March 29, 2021Date of Patent: November 15, 2022Assignee: Dolby Laboratories Licensing CorporationInventors: Lorne A. Whitehead, Helge Seetzen, Gregory John Ward, Wolfgang Heidrich
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Publication number: 20210310872Abstract: A wavefront sensor includes a mask and a sensor utilized to capture a diffraction pattern generated by light incident to the mask. A reference image is captured in response to a plane wavefront incident on the mask, and another measurement image is captured in response to a distorted wavefront incident on the mask. The distorted wavefront is reconstructed based on differences between the reference image and the measurement image.Type: ApplicationFiled: June 22, 2021Publication date: October 7, 2021Inventors: Congli WANG, Xiong DUN, Qiang FU, Wolfgang HEIDRICH
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Publication number: 20210287618Abstract: Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the display layer. In another technique, the light source layer's point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.Type: ApplicationFiled: March 29, 2021Publication date: September 16, 2021Applicant: Dolby Laboratories Licensing CorporationInventors: Lorne A. WHITEHEAD, Helge SEETZEN, Gregory John WARD, Wolfgang HEIDRICH
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Patent number: 11073427Abstract: A wavefront sensor includes a mask and a sensor utilized to capture a diffraction pattern generated by light incident to the mask. A reference image is captured in response to a plane wavefront incident on the mask, and another measurement image is captured in response to a distorted wavefront incident on the mask. The distorted wavefront is reconstructed based on differences between the reference image and the measurement image.Type: GrantFiled: October 26, 2017Date of Patent: July 27, 2021Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Congli Wang, Xiong Dun, Qiang Fu, Wolfgang Heidrich
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Publication number: 20210166404Abstract: A method for tracking moving particles in a fluid. The method includes illuminating the moving particles with an illumination sequence of patterns generated by a light projector; measuring with a single camera light intensities reflected by the moving particles; calculating, based on the measured light intensity, digital coordinates (x?, y?, z?) of the moving particles; determining a mapping function f that maps the digital coordinates (x?, y?, z?) of the moving particles to physical coordinates (x, y, z) of the moving particles; and calculating the physical coordinates (x, y, z) of the moving particles based on the mapping function f. The illumination sequence of patterns is generated with a single wavelength, and light emitted by the projector is perpendicular to light received by the single camera.Type: ApplicationFiled: April 9, 2019Publication date: June 3, 2021Inventors: Sigurdur Tryggvi THORODDSEN, Andres A. AGUIRRE-PABLO, Wolfgang HEIDRICH, Jinhui XIONG, Abdulrahman B. ALJEDAANI, Ramzi IDOUGHI
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Patent number: 11002856Abstract: Systems and methods for imaging object velocity are provided. In an embodiment, at least one Time-of-Flight camera is used to capture a signal representative of an object in motion over an exposure time. Illumination and modulation frequency of the captured motion are coded within the exposure time. A change of illumination frequency is mapped to measured pixel intensities of the captured motion within the exposure time, and information about a Doppler shift in the illumination frequency is extracted to obtain a measurement of instantaneous per pixel velocity of the object in motion. The radial velocity information of the object in motion can be simultaneously captured for each pixel captured within the exposure time. In one or more aspects, the illumination frequency can be coded orthogonal to the modulation frequency of the captured motion. The change of illumination frequency can correspond to radial object velocity.Type: GrantFiled: August 5, 2016Date of Patent: May 11, 2021Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Wolfgang Heidrich, Felix Heide, Gordon Wetzstein, Matthias Hullin
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Publication number: 20210092337Abstract: A new projector design combines one spatial light modulator that affects only the phase of the illumination, and one spatial light modulator that only affects its amplitude (intensity). The phase-only modulator curves the wavefront of light and acts as a pre-modulator for a conventional amplitude modulator. This approach works with both white light and laser illumination, generating a coarse image representation efficiently, thus enabling, within a single image frame, significantly elevated highlights as well as darker black levels while reducing the overall light source power requirements.Type: ApplicationFiled: September 30, 2020Publication date: March 25, 2021Inventors: Gerwin DAMBERG, James GREGSON, Wolfgang HEIDRICH
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Publication number: 20200394974Abstract: Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the display layer. In another technique, the light source layer's point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.Type: ApplicationFiled: January 20, 2020Publication date: December 17, 2020Applicant: Dolby Laboratories Licensing CorporationInventors: Lorne A. WHITEHEAD, Helge SEETZEN, Gregory John WARD, Wolfgang HEIDRICH
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Publication number: 20200378999Abstract: Imaging of complex, non-stationary three dimensional (3D) flow velocities is achieved by encoding depth into color. A flow volume 22 is illuminated with a continuum 40 of light planes 42 whereby each depth corresponds to a respective light plane 14 having a specific wavelength of light. A diffractive component 46 in the camera 24 optics, which records the trajectories of illuminated particles 20 within the flow volume 22, ensures that all light planes 42 are in focus simultaneously. The setup permits a user to track 3D) trajectories of particles 20 within the flow volume 22 by combining two dimensional (2D) spatial and one dimensional (1D) color information. For reconstruction, an image formation model for recovering stationary ID particle positions is provided. 3D velocity estimation is achieved with a variant of a 3D optical flow approach that accounts for both physical constraints as well as the color (rainbow) image formation model.Type: ApplicationFiled: July 14, 2020Publication date: December 3, 2020Inventors: Wolfgang HEIDRICH, Jinhui XIONG, Xiong DUN, Ramzi IDOUGHI, Sigurdur Tryggvi THORODDSEN, Andres A. AGUIRRE-PABLO, Abdulrahman B. ALJEDAANI, Erqiang LI
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Patent number: 10834369Abstract: A new projector design combines one spatial light modulator that affects only the phase of the illumination, and one spatial light modulator that only affects its amplitude (intensity). The phase-only modulator curves the wavefront of light and acts as a pre-modulator for a conventional amplitude modulator. This approach works with both white light and laser illumination, generating a coarse image representation efficiently, thus enabling, within a single image frame, significantly elevated highlights as well as darker black levels while reducing the overall light source power requirements.Type: GrantFiled: July 19, 2019Date of Patent: November 10, 2020Assignee: MTT Innovation IncorporatedInventors: Gerwin Damberg, James Gregson, Wolfgang Heidrich
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Patent number: 10782311Abstract: Imaging of complex, non-stationary three dimensional (3D) flow velocities is achieved by encoding depth into color. A flow volume 22 is illuminated with a continuum 40 of light planes 42 whereby each depth corresponds to a respective light plane 14 having a specific wavelength of light. A diffractive component 46 in the camera 24 optics, which records the trajectories of illuminated particles 20 within the flow volume 22, ensures that all light planes 42 are in focus simultaneously. The setup permits a user to track 3D trajectories of particles 20 within the flow volume 22 by combining two dimensional (2D) spatial and one dimensional (1D) color information. For reconstruction, an image formation model for recovering stationary 3D particle positions is provided. 3D velocity estimation is achieved with a variant of a 3D optical flow approach that accounts for both physical constraints as well as the color (rainbow) image formation model.Type: GrantFiled: April 26, 2017Date of Patent: September 22, 2020Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Wolfgang Heidrich, Jinhui Xiong, Xiong Dun, Ramzi Idoughi, Sigurdur Tryggvi Thoroddsen, Andres A. Aguirre-Pablo, Abdulrahman B. Aljedaani, Erqiang Li
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Patent number: 10540932Abstract: Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the display layer. In another technique, the light source layer's point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.Type: GrantFiled: December 10, 2018Date of Patent: January 21, 2020Assignee: Dolby Laboratories Licensing CorporationInventors: Lorne A. Whitehead, Helge Seetzen, Gregory John Ward, Wolfgang Heidrich
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Publication number: 20200014895Abstract: A new projector design combines one spatial light modulator that affects only the phase of the illumination, and one spatial light modulator that only affects its amplitude (intensity). The phase-only modulator curves the wavefront of light and acts as a pre-modulator for a conventional amplitude modulator. This approach works with both white light and laser illumination, generating a coarse image representation efficiently, thus enabling, within a single image frame, significantly elevated highlights as well as darker black levels while reducing the overall light source power requirements.Type: ApplicationFiled: July 19, 2019Publication date: January 9, 2020Inventors: Gerwin DAMBERG, James GREGSON, Wolfgang HEIDRICH