US 11,669,967 B2
Template matching method for image-based detection and tracking of irregular shaped targets
Hassan Mostafavi, Los Altos, CA (US); Alexander Sloutsky, San Mateo, CA (US); and Andrew G. Jeung, Mountain View, CA (US)
Assigned to VARIAN MEDICAL SYSTEMS, INC., Palo Alto, CA (US)
Filed by Varian Medical Systems, Inc., Palo Alto, CA (US)
Filed on Jun. 10, 2022, as Appl. No. 17/838,067.
Application 17/838,067 is a continuation of application No. 16/882,420, filed on May 22, 2020, granted, now 11,367,275.
Application 16/882,420 is a continuation of application No. 13/662,361, filed on Oct. 26, 2012, granted, now 10,679,104, issued on Jun. 9, 2020.
Prior Publication US 2022/0301280 A1, Sep. 22, 2022
Int. Cl. G06V 10/75 (2022.01); G06T 7/00 (2017.01); G06T 11/00 (2006.01); G06T 7/246 (2017.01); G06T 7/11 (2017.01)
CPC G06V 10/75 (2022.01) [G06T 7/0012 (2013.01); G06T 7/248 (2017.01); G06T 7/11 (2017.01); G06T 11/003 (2013.01); G06T 2207/10112 (2013.01); G06T 2207/20104 (2013.01); G06T 2207/30052 (2013.01); G06T 2207/30096 (2013.01); G06T 2207/30204 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image processing method, comprising:
obtaining a volumetric image;
performing forward projection of voxels in the volumetric image from different positions onto a first plane using a processor;
summing projections on the first plane resulted from the forward projection from the different positions to create a first image slice in the first plane;
performing forward projection of the voxels in the volumetric image from the different positions onto a second plane that is parallel to the first plane; and
summing projections on the second plane resulted from the forward projection from the different positions on the second plane to create a second image slice in the second plane.
 
19. An image processing method, comprising:
obtaining a volumetric image;
performing forward projection of voxels in the volumetric image from different positions onto a first plane using a processor;
summing projections on the first plane resulted from the forward projection from the different positions to create a first image slice in the first plane;
de-blurring the first image slice; and
obtaining additional image slices that are parallel to the first image slice,
wherein the act of de-blurring the first image slice comprises obtaining a blur image using the additional image slices, and subtracting the blur image from the first image slice.