Patent ID: 11954884
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC F  G  H

Claim 13:
14. Ray direction calculation method comprising:
emitting a first ray having a first wavelength to an object;
receiving the first ray emitted to the object at a first pixel;
emitting a second ray having a second wavelength different from the first wavelength to the object;
receiving the second ray emitted to the object at a second pixel;
capturing an image based on the first ray received by the first pixel and the second ray received by the second pixel;
calculating a first set of discrete hue pixel values including a discrete hue pixel value for the first ray based on a first region corresponding to the first pixel in the captured image;
calculating a second set of discrete hue pixel values including a discrete hue pixel value for the second ray based on a second region corresponding to the second pixel in the captured image; and
calculating the first ray direction and the second ray direction based on both the first set of discrete hue pixel values and the second set of discrete hue pixel values.