Method and system for identifying optimal image within a series of images that depict a moving organ
AssigneePaieon Inc.
InventorsMichael Zarkh, Moshe Klaiman
Life of this patent
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Abstract
A method and system for quantifying a cyclic motion within a series of images depicting a moving object subject to composite motion containing a cyclic component and a non-cyclic component of lower frequency than the cyclic component. Composite motion is computed as well as the non-cyclic component as the integral of motion over a motion cycle. The non-cyclic component is subtracted from the composite motion so as to obtain the cyclic component
Claims28
A method for obtaining a cyclic motion within a series of images depicting a moving object subject to composite motion containing a cyclic motion component having a cyclic period and a non-cyclic consistent component of a lower frequency than the cyclic motion component, the method comprising:
- a computer performing the steps of:
- (a) computing the composite motion between at least one pair of successive images, the composite motion represented by at least one vector;
- (b) computing the non-cyclic consistent component as an integral of the composite motion over the cyclic period;
- (c) computing a proportional part of the non cyclic consistent component for each of the at least one pair of successive images;
- and
- (d) for each of the at least one pair of successive images, subtracting the proportional part of the non-cyclic consistent component from the composite motion so as to obtain the cyclic motion component,
- wherein the series of images comprises an at least one series of N images acquired during a cyclic period, each frame having an index i within the cyclic period, i=1 . . . N, and wherein the proportional part of the non cyclic component for each of the at least one pair of successive images i-1 and i is determined by dividing the non cyclic component by N and multiplying by i-1.
A system for obtaining a cyclic motion within a series of images depicting a moving object subject to composite motion containing a cyclic motion component having a cyclic period and a non-cyclic consistent component of a lower frequency than the cyclic motion component, the system comprising:
- a composite motion unit for computing the composite motion between at least one pair of successive images, the composite motion represented by at least one vector;
- a non-cyclic motion unit for computing the non-cyclic consistent component as an integral of the composite motion over the cyclic period;
- a proportional part unit for computing a proportional part of the non cyclic motion component for each of the at least one pair of successive images;
- and
- a subtraction unit for subtracting the proportional part of the non-cyclic consistent component from the composite motion occurring between each of the at least one pair of successive images, so as to obtain the cyclic motion component,
- wherein the series of images comprises an at least one series of N images acquired during a cyclic period, each frame having an index i within the cyclic period, i=1 . . . N, and wherein the proportional part of the non cyclic component for each of the at least one pair of successive images i-1 and i is determined by dividing the non cyclic component by N and multiplying by i-1 , wherein at least one of the above units is implemented in a hardware or hardware software combination.
Dependencies are inferred from the claim text.