A Novel Approach to the Derivation of Expressions for Geometrical MTF in Sampled Systems

A novel approach to the derivation of formul describing geometrical Modulation Transfer Funct (MTF) for sampled systems is presented. The formulae initially derived for the one dimensional case and desc performance extremes with respect to sampling p aperture and spatial frequency up to the Nyquist limit. approach is then extended to two dimensions performance with respect to array orientation evaluated. The formulae were tested against a high qua greyscale electronic stills camera (ECS). Predictions o MTF were compared with measurements made usin modified edge gradient technique, sine waves and 12233[1]. The results show correlation and suggest approach is valid within the constraints given.