Title:
心臓境界、胸郭境界及び横隔膜境界を検出する方法、装置及び記憶媒体
Document Type and Number:
Japanese Patent JP4682091
Kind Code:
B2
Abstract:
The present invention provides a method of detecting borders in a chest image. The method comprises calculating the gray level difference between neighboring pixels of the chest image to get a differential image; filtering the differential image to reduce noise and enhance the target; binarizing the filtered image; picking out the outside edges of the area with high gray level from the binarized image; and determining a final border from the edges according to the character of the border to be found. The present invention also provides an apparatus and a storage medium for implementing the above-mentioned method and a method and an apparatus for automatically measuring the Cardiothoracic Ratio of a chest image.
Inventors:
Dawei
Miao Pen
Miao Pen
Application Number:
JP2006166631A
Publication Date:
May 11, 2011
Filing Date:
June 15, 2006
Export Citation:
Assignee:
Canon Inc
International Classes:
A61B6/00; G06T1/00; G06T5/00; G06T5/20; G06V10/26
Domestic Patent References:
| JP2002503861A | ||||
| JP8335271A | ||||
| JP8331385A | ||||
| JP2002366961A | ||||
| JP2002177249A | ||||
| JP2003006661A |
Foreign References:
| WO2004036500A2 |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura