A smart binning circuit includes an edge information generator suitable for generating edge information from pixel data outputted from a pixel array; a weight allocator suitable for allocating a weight based on the edge information; a binning component suitable for generating a binning value by performing an edge detection interpolation (EDI) binning on the edge information; a bayer binning component suitable for generating an average value representing pixels that are down-scaled through a 4-sum binning operation; and a combiner suitable for combining the binning value and the average value according to the allocated weight.