System and methods for parallel processing motion estimation of digital videos
OwnerVictor Manuel Murray Herrera, Marios Stephanou Pattichis +1inventors
InventorsVictor Manuel Murray Herrera, Marios Stephanou Pattichis, Paul A. Rodriguez-Valderrama
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Abstract
An AM-FM representation is used to derive AM and FM based equations that can be applied to two consecutive frames in parallel to derive motion estimates. The multidimensional AM-FM representations provide general representations of non-stationary content in digital images. The AM-FM estimate captures single images and features of a video that can lead to different applications in image and video analysis, for example, computer-aided diagnosis in medical applications or monitoring micro-movements of rocky material in the pit slopes.
Claims14
A method for estimating motion of a digital video using a combination of instantaneous amplitude (IA) components from two video frames, instantaneous frequency (IF) components from two video frames, or instantaneous amplitude (IA) components and instantaneous frequency (IF) components from two video frames, wherein the digital video I(x,y,t) is represented by:
- I(x,y,t)=Σn=1Man(x,y,t)cos(φn(x,y,t)),
- where n=1, 2, . . . , M indexes the AM-FM components,
- an(x,y,t)cos(φn(x,y,t)) represents the n-th AM-FM component,
- an symbolizes the n-th instantaneous amplitude (IA) component,
- φn represents the n-th instantaneous phase (IP) component, and
- the instantaneous frequency (IF) is defined in terms of a gradient of the instantaneous phase (IP) component ∇φn(x,y,t).
Dependencies are inferred from the claim text.