디지털카메라의 감도변화에 따른 노이즈증가와 색 재현에 관한 비교 연구

Abstract

This study investigates the sensitivity of digital cameras. Digital cameras provides easy adjustment of sensitivity and allow to take high sensitivity pictures. However, more high sensitivity pictures means higher noise. Everybody might experience bad pictures due to noise generated after pictures were taken. If we investigate pixels of dark object, we can notice that noise consists of pixels and is produced by a random color on pixels. If the exactly same color we see in real world can be reproduced, there is nothing to be a problem. As a result of this, the importance of high sensitivity is re-emphasized in taking a picture of an object in a dark place. Recently, it is widely distributed in the cyber world that a new Nikon camera shows lower noise. The real effects of noise on color reproduction and range of changing color according to the changes in sensitivity have been identified. This study is to compare color reproduction and changes in noise according to the changes in sensitivity of a camera.