18-07-2013 дата публикации
Номер: US20130182935A1
Принадлежит:
A moving object contour tracking apparatus includes a contour tracking section for performing, by taking an initial contour of the moving object in a predetermined image slice as a starting contour, contour tracking in a first time direction to acquire a first contour of the moving object and contour tracking in a second time direction to acquire a second contour of the moving object in each image slice; a contour comparison section for calculating, in the predetermined image slice, a similarity between the first contour and the initial contour and a similarity between the second contour and the initial contour; and a contour correction section for taking the contours in the image slices that are acquired in a contour tracking direction corresponding to the greater one of the two similarities as the contours of the moving object in the respective image slices. 1. A moving object contour tracking apparatus for tracking a contour of a periodically deforming object in an image slice time series , the image slice time series comprising a plurality of image slices acquired at a plurality of time points in a motion period of the moving object , the moving object contour tracking apparatus comprising:a contour tracking section configured toperform, by taking an initial contour of the moving object in a predetermined image slice of the image slice time series as a starting contour, contour tracking in the image slice time series in a first time direction to acquire a first contour of the moving object in each image slice of the image slice time series, andperform, by taking the initial contour as a starting contour, contour tracking in the image slice time series in a second time direction to acquire a second contour of the moving object in each image slice of the image slice time series;a contour comparison section configured to calculate a similarity between the first contour of the moving object in the predetermined image slice and the initial contour as a first ...
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