Patent ID: 8285134

Claim:
A wide dynamic range (WDR) hardware apparatus comprising: a first multiplier for multiplying a weight coefficient to a luminance signal of a small size image having a first exposure time and a luminance signal of an original size image having the first exposure time and input at a predetermined time difference from the small size image; a second multiplier for multiplying a weight coefficient to a luminance signal of a small size image having a second exposure time longer than the first exposure time and a luminance signal of an original size image having the second exposure time and input at a predetermined time difference from the small size image; and an adder for generating a first combination signal by adding the luminance signal of the small size image having the first exposure time to which the weight coefficient is multiplied and the luminance signal of the small size image having the second exposure time to which the weight coefficient is multiplied, and generating a second combination signal by adding the luminance signal of the original size image having the first exposure time to which the weight coefficient is multiplied and the luminance signal of the original size image having the second exposure time to which the weight coefficient is multiplied.