US 12,136,194 B2
Method and apparatus for bone suppression in X-ray image
Young Joo Han, Uiwang-si (KR)
Assigned to VIEWORKS CO., LTD., Anyang-si (KR)
Filed by VIEWORKS CO., LTD., Anyang-si (KR)
Filed on Mar. 10, 2022, as Appl. No. 17/691,863.
Claims priority of application No. 10-2021-0031914 (KR), filed on Mar. 11, 2021.
Prior Publication US 2022/0292656 A1, Sep. 15, 2022
Int. Cl. G06T 5/50 (2006.01); G06T 5/20 (2006.01); G06T 7/13 (2017.01); G06T 7/136 (2017.01)
CPC G06T 5/50 (2013.01) [G06T 5/20 (2013.01); G06T 7/13 (2017.01); G06T 7/136 (2017.01); G06T 2207/10116 (2013.01); G06T 2207/20041 (2013.01); G06T 2207/20221 (2013.01); G06T 2207/30008 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for bone suppression in a single photographed X-ray image, the method comprising:
(a) extracting an upper contour line and a lower contour line corresponding to a bone to be suppressed from an original X-ray image;
(b) generating a first binarization image and a second binarization image based on the upper contour line and the lower contour line, respectively;
(c) generating a first distance transform image and a second distance transform image from the first binarization image and the second binarization image, respectively through distance transform;
(d) generating a compensated first X-ray image and a compensated second X-ray image by compensating a pixel value of a region which belongs to the bone by using the first distance transform image and the second distance transform image, respectively from the original X-ray image; and
(e) synthesizing the compensated first X-ray image and the compensated second X-ray image to obtain a bone-suppressed X-ray image.