Method and apparatus for rotation registration of extended field of view ultrasound images
AssigneeGE Medical Systems Global Technology Company, LLC
InventorsFang F. Dong, Brian Peter Geiser
Life of this patent
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Abstract
1 method is provided for obtaining an extended field of view diagnostic ultrasound image. A first image frame and a second image frame of an object of interest are acquired. The image frames are rotated relative to one another. Pixel points, representing spatial points in the object of interest, are identified in the first image frame. Pixel points corresponding to the pixel points in the first image frame are then computed in the second image frame. A rotation angle between the first and the second image frames is calculated based on a least-squares relation between the pixel points. The first and second image frames are combined to form a part of an extended field of view image.
Claims11
A method for computing the image registration of two images, the method comprising:
- acquiring consecutive image frames of an object of interest, said consecutive image frames representing at least partially overlapping portions of a region of interest;
- identifying at least one pixel point in each image frame representing one spatial point in the region of interest;
- calculating a squared difference between pixel points in said consecutive image frames to obtain a rotation angle between said consecutive image frames;
- and
- calculating a linear shift between said consecutive image frames based on said pixel points.
A method for computing the image registration of two images, the method comprising:
- acquiring consecutive image frames of an object of interest, said consecutive image frames representing at least partially overlapping portions of a region of interest;
- identifying at least one pixel point in each image frame representing one spatial point in the region of interest;
- calculating a squared difference between pixel points in said consecutive image frames utilizing a least-squares relation to obtain a rotation angle between said consecutive image frames;
- and
- calculating a linear shift between said consecutive image frames based on said pixel points.
A method for computing the image registration of two images, the method comprising:
- acquiring consecutive image frames of an object of interest, said consecutive image frames representing at least partially overlapping portions of a region of interest;
- identifying at least one pixel point in each image frame representing one spatial point in the region of interest;
- calculating a squared difference between pixel points in said consecutive image frames utilizing a least-squares relation to obtain a rotation angle derived from a continuous range of possible rotation angles between said consecutive image frames;
- and
- calculating a linear shift between said consecutive image frames based on said pixel points.
Dependencies are inferred from the claim text.