US 11,941,784 B1
Image processing apparatus, method, and storage medium for spectrally encoded endoscopy ghost noise reducton
Mitsuhiro Ikuta, Cambridge, MA (US)
Assigned to Canon U.S.A., Inc., Melville, NY (US)
Filed by Canon USA, Inc., Melville, NY (US)
Filed on Mar. 10, 2021, as Appl. No. 17/198,077.
Claims priority of provisional application 63/016,110, filed on Apr. 27, 2020.
Int. Cl. G06T 5/00 (2006.01); A61B 1/00 (2006.01); G06N 20/00 (2019.01); G06T 5/20 (2006.01)
CPC G06T 5/002 (2013.01) [A61B 1/000095 (2022.02); G06N 20/00 (2019.01); G06T 5/20 (2013.01); G06T 2207/10068 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/20132 (2013.01); G06T 2207/20182 (2013.01)] 17 Claims
OG exemplary drawing
 
9. An image processing method for an image processing apparatus comprising a probe with an illumination fiber and a detection fiber, and a controller with at least one memory and at least one processor, the illumination fiber being configured for optical communication with a light source, the image processing method comprising:
causing the controller to execute instructions to implement steps comprising:
receiving an input image based on image data;
executing noise reduction processing on the image data by using view angle and rotation angle data of the probe to calculate a value using reference pixels based on a first frequency range, and subtract a second value using pixels based on a second frequency range; and
output noise-reduced image data based on a result of the noise reduction processing,
wherein ghost noise is reduced in the image reconstruction process.