디지털 카메라 파라미터와 비주얼 노이즈 상관관계 연구A Study on the Relationship between Digital Camera Parameter and Visual Noise
- Authors
- 박형주; 하동환
- Issue Date
- 2008
- Publisher
- 한국사진학회
- Keywords
- Noise; Visual noise; Human spatial response; Image quality; ISO; Shutterspeed; Digital camera
- Citation
- AURA, no.18, pp 20 - 28
- Pages
- 9
- Journal Title
- AURA
- Number
- 18
- Start Page
- 20
- End Page
- 28
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/30748
- ISSN
- 1228-503X
- Abstract
- Noise unwanted variations in the response of an imaging system is an important factor of
electronic photographic systems. On the request of digital camera users and manufacturers, the
standardization of noise measurement in determining the quality of images can be described in
International Standard of Organization 15739:2005.
Since the noise performance of an image sensor may vary significantly with exposure time
and operating temperature. The visibility of noise to human observers depends on the viewing
distance, spatial frequency, density, colour and viewing conditions. This concept is applied to
this study, which is called a ‘visual noise', and it is measured by ISOs and shutter speed
variables applying noise reduction function on a digital camera.
In this study, we will present the practical parameter for the minimization of visual noise to
consumers and expect the effective value of noise reduction to digital camera manufacturers.
Furthermore, we can expect the following study to measure the human spatial response related
to visual noise recognition.
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