Device and Method for Removing Grid Noise

A device for removing grid noises, comprising:

• an average value calculation unit for calculating an average value of each line of an inputted Bayer pattern image;
• an estimation unit for calculating an estimate value, the estimate value estimating an average of even number lines and odd number lines, the even number lines being placed between the odd number lines of a Bayer pattern image and the odd number lines being placed between the even number lines of a Bayer pattern image;
• a difference calculation unit for calculating a difference value between the estimate value calculated by the estimation unit and the average value calculated by the average value calculation unit;
• and
• a correction coefficient calculation unit for calculating a correction coefficient by using the difference value generated by the difference calculation unit.