Pattern recognition system utilizing a plurality of partial standard patterns
Method of selecting a preferred difference image
Method and device for detecting the position of an object
Medical imaging apparatus
Matched filter for X-ray temporal subtraction Patent #: 4504908
ApplicationNo. 06/573323 filed on 01/24/1984
US Classes:382/130, Producing difference image (e.g., angiography)356/2, CONTOUR PLOTTING378/20, Object positioning or aligning378/98.12, With image subtraction or addition382/294, Registering or aligning multiple images to one another708/442Coordinate conversion
ExaminersPrimary: Boudreau, Leo H.
Assistant: Couso, Jose L.
Attorney, Agent or Firm
International ClassesG06T 5/00 (20060101)
G06K 9/64 (20060101)
G06T 3/00 (20060101)
Foreign Application Priority Data1983-01-28 JP
AbstractTwo images to be registered are divided into a plurality of image portions. A standard point for the registration is extracted for each of the image portions divided. Coordinate transformations between two images for the registration are conducted for each image portion by using the standard point extracted. The coordinate values transformed between the image portions are smoothed in the case that they discretely change so that they may be smoothly connected.