Patent ID: 8339582

Claim:
An apparatus to correct an image, the apparatus comprising: a receiver to receive a depth value and a luminous intensity, the depth value and the luminous intensity being measured by at least one depth sensor; a first storage unit to store a plurality of correction depth values mapped to different depth values and different luminous intensities; a correction unit to read one of the correction depth values from the first storage unit and to correct the measured depth value using the read correction depth value, the correction depth value being mapped to the measured depth value and the measured luminous intensity; and a calibration unit to calibrate location and direction information of depth images generated by a plurality of depth photography apparatuses to match the depth images with each other, wherein the stored plurality of correction depth values includes interpolated correction depth values corresponding to non-measured distances between the at least one depth sensor and a reference pattern, and wherein the calibration unit performs calibration between the plurality of depth photography apparatuses by selecting a depth photography apparatus from among the plurality of depth photography apparatuses as a reference depth photography apparatus, and calculating rotation constants and translation constants between the reference depth photography apparatus and remaining plurality of depth photography apparatuses.