Patent ID: 7659935
Filing Date: 2010-02-09
Classification: G02B,H04N

Abstract:
1. A video camera with enhanced image clarification comprising: an imaging system with an adaptive optic device arranged for canceling aberrations introduced by an optical medium to produce adapted in-focus digital images of an object; and a sequential diversity processor using said adapted in-focus digital images as diverse images and using changes in said adaptive optic device as diversities to calculate control signals for said adaptive optic device; wherein said sequential diversity processor utilizes diversity D(k−1), the diversity at time k−1, along with current and previous digital images, I(k) and I(k−1), as the diverse images to produce Q(k−1), an estimate of a residual aberration in an adapted in-focus digital image of said object at time k−1; wherein said sequential diversity processor sets diversity D(k) to the negative of the estimate of the residual aberration, that is, D(k)=−Q(k−1); and wherein T(k−1), the signal produced by the sequential diversity processor to control the adaptive optic device at time k−1, is added to D(k), to produce a control signal at time k, that is, T(k)=T(k−1)+D(k), which also implies that D(k)=T(k)−T(k−1).