Imaging apparatus and imaging method

Abstract

An illumination apparatus emits illumination light Swith an intensity distribution that changes with time. A photodetector measures reflected light from an object. A reconstruction processing unit reconstructs an intermediate image H(x, y) of the object for every predetermined number of changes of the intensity distribution using a correlation calculation between detection intensities based on the output of the photodetector and the intensity distributions of the illumination light. A combining processing unit calculates shift amounts Δx and Δy for matching between the current reconstructed image G(x, y) obtained by combining the previous intermediate images H(x, y) and the current intermediate image H(x, y). Subsequently, the current reconstructed image G(x, y) is shifted based on the shift amounts Δx and Δy. The shifted reconstructed image G(x−Δx, y−Δy) is combined with the latest intermediate image H(x, y) to create a new reconstructed image G(x, y).