US 12,361,609 B2
Apparatus for generating an augmented image of an object
Rafael Wiemker, Kisdorf (DE); Liran Goshen, Pardes-Hanna (IL); Jörg Sabczynski, Norderstedt (DE); and Tobias Klinder, Uelzen (DE)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 17/917,573
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Apr. 6, 2021, PCT No. PCT/EP2021/058840
§ 371(c)(1), (2) Date Oct. 7, 2022,
PCT Pub. No. WO2021/204744, PCT Pub. Date Oct. 14, 2021.
Claims priority of application No. 20168880 (EP), filed on Apr. 9, 2020.
Prior Publication US 2023/0144823 A1, May 11, 2023
Int. Cl. G06T 5/00 (2024.01); G06T 5/50 (2006.01); G06T 11/00 (2006.01); G06V 10/75 (2022.01)
CPC G06T 11/008 (2013.01) [G06T 5/50 (2013.01); G06V 10/751 (2022.01); G06T 2207/10024 (2013.01); G06T 2207/10081 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/20221 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An apparatus for generating an augmented image of an object, comprising:
a base image providing unit configured to provide a base image of an object, wherein the base image is generated based on a combination of spectral image data of the object acquired using a spectral x-ray imaging apparatus;
a contrast image providing unit configured to provide a contrast image of the object, wherein the contrast image is generated based on a combination of the spectral image data of the object that is different from the combination used for generating the base image;
a degree of saliency determination unit configured to determine a degree of saliency for each voxel of the contrast image, wherein the degree of saliency is indicative of a difference between an image value of a voxel of the contrast image and an image value of a corresponding voxel of a predetermined template image; and
an augmented image generation unit configured to generate an augmented base image of the object by augmenting voxels of the base image based on the degree of saliency determined for corresponding voxels of the contrast image, wherein the degree of saliency determination unit is configured to determine an approximation function that allows to approximate image values of voxels of the contrast image based on image values of corresponding voxels of the predetermined template image, and wherein the degree of saliency determination unit is further configured to generate an approximated contrast image based on the approximation function and the predetermined template image and to determine the degree of saliency based on the approximation function.