Patent ID: 8483504

Claim:
An apparatus for digital auto-focusing, comprising: a local block generator generating a plurality of local block images from an input image; a distance-estimation unit estimating distances of each local block image; a focal-distance-setting unit setting one of the estimated distances of the local block images as a focal distance of the input image; a reblurred-image generator generating a corresponding reblurred local block image for each local block image; a reconstructed image generator generating a corresponding in-focus local block image focused to the estimated distances of each local block image; a local-block-image-matching unit matching each reblurred local block image to each in-focus local block image with different weight values based on the set focal distance; and a final-image generator generating a final image by summing the matched local block images using the corresponding weight values, wherein the local block images are generated by dividing the input image into pixels of a predetermined interval.