Title:
画像処理装置及びプログラム
Document Type and Number:
Japanese Patent JP6466076
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To more robustly detect a blood vessel on an image.SOLUTION: An image processing device is provided, which includes extraction means for extracting a blood vessel region by detecting a combination of a positive gradient and a negative gradient of pixel values in a direction along a pixel string about each of a plurality of pixel strings constituting an image including a blood vessel. The extraction means includes determination means for determining a vector obtained by normalizing a gradient vector with the size of the gradient vector as a feature vector of each coordinates, for example, when the size of the gradient vector of pixel values in the coordinates is equal to or greater than a threshold corresponding to a noise level, and determining a zero vector as a feature vector of the coordinates when the size of the gradient vector is less than the threshold in each coordinates of the image, and detection means for detecting as a blood vessel an area until when components become negative (positive) after where the components become positive (negative) when seeing the components in the direction along the pixel string of the feature vector of each coordinates on the pixel string along the direction.
Inventors:
Yasuo Omi
Application Number:
JP2014070725A
Publication Date:
February 06, 2019
Filing Date:
March 31, 2014
Export Citation:
Assignee:
GE Medical Systems Global Technology Company LLC
International Classes:
G06T7/00; A61B5/055
Domestic Patent References:
| JP7079955A | ||||
| JP2002325761A | ||||
| JP3102477A | ||||
| JP2000003454A | ||||
| JP2002024821A | ||||
| JP5167927A |
Foreign References:
| US20120177262 |
Attorney, Agent or Firm:
Arakawa Satoshi