公开(公告)号：US10547833B2

公开(公告)日：2020-01-28

申请号：US15635120

申请日：2017-06-27

Applicant: Magic Leap, Inc.

Inventor： Jeffrey Steven Kranski ,  Frederick Dennis Zyda ,  Grace Vesom ,  Grace Shin-Yee Tsai ,  Jeremy A. Grata ,  Zhiheng Jia ,  Li Jiang

IPC: H04N17/00 ,  H04N5/247 ,  G06T7/80 ,  B65G15/28

Abstract: An improved method, system, and apparatus is provided to perform camera calibration, where cameras are mounted onto a moving conveyance apparatus to capture images of a multi-planar calibration target. The calibration process is optimized by reducing the number of images captured while simultaneously preserving overall information density.

公开(公告)号：US11503275B2

公开(公告)日：2022-11-15

申请号：US16721291

申请日：2019-12-19

Applicant: MAGIC LEAP, INC.

Inventor： Jeffrey Steven Kranski ,  Frederick Dennis Zyda ,  Grace Vesom ,  Grace Shin-Yee Tsai ,  Jeremy A. Grata ,  Zhiheng Jia ,  Li Jiang

IPC: H04N17/00 ,  H04N5/247 ,  G06T7/80 ,  B65G15/28

Abstract: An improved method, system, and apparatus is provided to perform camera calibration, where cameras are mounted onto a moving conveyance apparatus to capture images of a multi-planar calibration target. The calibration process is optimized by reducing the number of images captured while simultaneously preserving overall information density.

公开(公告)号：US20170374360A1

公开(公告)日：2017-12-28

申请号：US15635120

申请日：2017-06-27

Applicant: Magic Leap, Inc.

Inventor： Jeffrey Steven Kranski ,  Frederick Dennis Zyda ,  Grace Vesom ,  Grace Shin-Yee Tsai ,  Jeremy A. Grata ,  Zhiheng Jia ,  Li Jiang

IPC: H04N17/00 ,  G06T7/80 ,  H04N5/247 ,  B65G15/28

Abstract: An improved method, system, and apparatus is provided to perform camera calibration, where cameras are mounted onto a moving conveyance apparatus to capture images of a multi-planar calibration target. The calibration process is optimized by reducing the number of images captured while simultaneously preserving overall information density.

公开(公告)号：US12019239B2

公开(公告)日：2024-06-25

申请号：US17154895

申请日：2021-01-21

Applicant: Magic Leap, Inc.

Inventor： Miller Harry Schuck, III ,  Lei Zhang ,  Etienne Gregoire Grossmann ,  Nukul Sanjay Shah ,  Ohad Zohar ,  Robert Zito ,  Nicholas Ihle Morley ,  Jason Schaefer ,  Zhiheng Jia ,  Eric C. Browy ,  Marshall Charles Capps ,  Kazunori Tanaka ,  Grace Vesom ,  John Monos

IPC: G01J3/02 ,  G01J3/46 ,  G02B27/01 ,  G06T7/80 ,  G06T7/90

CPC classification number: G02B27/0172 ,  G01J3/0251 ,  G01J3/462 ,  G06T7/80 ,  G06T7/90 ,  G06T2207/10024

Abstract: A method for characterizing a digital color camera includes, for each of three primary colors used in a field sequential color virtual image, determining a conversion model for each color using RGB values and the color-measurement values. For each primary color, the method includes illuminating a display device using an input light beam of a primary color having spectral properties representative of a light beam in a virtual image in a wearable device. The method includes capturing, with the digital color camera, an image of the display device, and determining, from the image, RGB values for each primary color. The method includes capturing, with a color-measurement device, a color-measurement value associated with each corresponding primary color at the display device, thereby acquiring a color-measurement value in an absolute color space. A conversion model for each color is determined using RGB values and the color-measurement values.

公开(公告)号：US20210215536A1

公开(公告)日：2021-07-15

申请号：US17154895

申请日：2021-01-21

Applicant: Magic Leap, Inc.

Inventor： Miller Harry Schuck, III ,  Lei Zhang ,  Etienne Gregoire Grossmann ,  Nukul Sanjay Shah ,  Ohad Zohar ,  Robert Zito ,  Nicholas Ihle Morley ,  Jason Schaefer ,  Zhiheng Jia ,  Eric C. Browy ,  Marshall Charles Capps ,  Kazunori Tanaka ,  Grace Vesom ,  John Monos

IPC: G01J3/02 ,  G01J3/46 ,  G06T7/80 ,  G06T7/90

Abstract: A method for characterizing a digital color camera includes, for each of three primary colors used in a field sequential color virtual image, determining a conversion model for each color using RGB values and the color-measurement values. For each primary color, the method includes illuminating a display device using an input light beam of a primary color having spectral properties representative of a light beam in a virtual image in a wearable device. The method includes capturing, with the digital color camera, an image of the display device, and determining, from the image, RGB values for each primary color. The method includes capturing, with a color-measurement device, a color-measurement value associated with each corresponding primary color at the display device, thereby acquiring a color-measurement value in an absolute color space. A conversion model for each color is determined using RGB values and the color-measurement values.