Patent ID: 11944778
Assignee: CANON U.S.A., INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 7:
8. The imaging device of claim 4, wherein the one or more processors further operate to one or more of the following:
(i) keep the clearance metric for more than one frame and use a preliminary threshold for a pre-trigger that is indicative of a partial clearing;
(ii) compare the clearance metric to a pre-trigger threshold, detect that a trigger pullback threshold is reached, and start the trigger pullback where the clearance metric has exceeded the pre-trigger threshold for a set or predetermined minimum number of frames;
(iii) compare a pre-trigger threshold to the clearance metric for a set or predetermined minimum number of frames, the set or predetermined minimum number of frames is-being one or more; and/or
(iv) compare the clearance metric to the threshold where the threshold is a trigger pullback threshold, and issue the signal to trigger the pullback where one or more frames have the clearance metric exceed the trigger pullback threshold.