Alexander Steinberg,Sagiv Philipp,Ran Cohen,David Tolkowsky
申请号：
US13228335
公开号：
US09974509B2
申请日:
2011.09.08
申请国别(地区):
US
年份:
2018
代理人:
摘要：
Apparatus and methods are provided for imaging a tool inside a portion of a subjects body that undergoes motion. A plurality of image frames of the portion are acquired. An image frame in which the tool is enhanced is generated by (a) identifying radiopaque markers in the image frames, (b) identifying edge lines in a vicinity of the markers within the image frames, the edge lines corresponding to contours of the tool, (c) in response to the identifying of the edge lines, selecting a subset of the image frames that are based upon the acquired image frames, based upon a level of similarity between the edge lines in the selected image frames to one another, (d) aligning the contours in a plurality of the selected image frames, and (e) averaging the plurality of aligned frames to generate an averaged image frame. Other applications are also described.
