US 12,288,310 B2
Imaging with asymmetrical contrast amplification
Boris Stowasser, Erlangen (DE)
Assigned to Siemens Healthineers AG, Forchheim (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on Jan. 12, 2022, as Appl. No. 17/573,727.
Claims priority of application No. 10 2021 200 365.6 (DE), filed on Jan. 15, 2021.
Prior Publication US 2022/0230286 A1, Jul. 21, 2022
Int. Cl. G06T 5/50 (2006.01); G06T 7/00 (2017.01); G06T 15/08 (2011.01)
CPC G06T 5/50 (2013.01) [G06T 7/0014 (2013.01); G06T 15/08 (2013.01); G06T 2207/10116 (2013.01); G06T 2207/30101 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An imaging method comprising:
generating, by an imaging device, an image that includes a vessel structure of an object to be imaged, a device arranged in the object, or the vessel structure and the device;
generating, by an arithmetic unit, a filtered image by applying a local asymmetrical contrast amplification algorithm to the image, wherein applying the local asymmetrical contrast amplification algorithm comprises:
generating a blurred input image on the basis of an input image dependent on the image;
generating a contrast image by subtraction of the blurred input image from the input image, wherein the contrast image is modified locally asymmetrically in respect of a local intensity threshold value, wherein for the modification of the contrast image an intensity value of an image point of the contrast image is reduced by a degree of reduction if the intensity value of the image point of the contrast image is smaller than the intensity threshold value or the intensity value of the image point of the contrast image is not increased or is increased by a lesser degree of increase compared to the degree of reduction if the intensity value of the image point of the contrast image is greater than the intensity threshold value;
generating a contrast-amplified image by superimposition of the input image with the modified contrast image; and
displaying, by a display device, the filtered image to a user of the imaging device.