Information Model for Determining the Significance of Factors Influencing the Level of Digital Noise in Photographic Images

EasyChair Preprint no. 5034

Abstract

Digital noise (harmful signal) in digital image is identified as a lack of structural descriptions
and on condition of exceeding maximum of legitimate values requires a correction. As
facilities of graphics editors for the decline of digital noise predetermine the decline of
sharpness simultaneously, that is why it is necessary to realize the process of receipt of
photographic image with the least sound-level.
Many factors of influence are known on the level of noisemaking in digital photographic
representation. In this article is described an informative model, that allowed to distinguish
main factors that influence on structural descriptions in a most degree. It is analysed, that part
of factors, that are permanent (physical sizes of photosensitive matrix, closeness of placing of
pels, technology of making of matrix and description of materials), have most influence on
the level of noisemaking.
Other factors (ISO, time of exhibiting, condition of illumination) are variables that the user
chooses each time in accordance with the terms of photographing. Certainly, that the
protracted displays induce more subzero level of digital noise, than high value of lightsensitivity,
that it follows to take into account at a low level illumination in plane shot.
It was certain that high ISO causes the high level of noisemaking, regardless of technical
class of the camera that is equipped by the identical type of photosensitive matrix with even
physical sizes.
During experimental research is found, that on the photoimage digitised in a raw-format, the level
of both types of digital noise is higher, than on the photoimage digitised in the format of jpeg.
Research results allow to choose the optimal terms of exhibiting of image at the low level of
illumination, to provide the high indexes of quality.

Keyphrases: closeness of placing of pels technology of making of matrix description of materials, Digital noise ISO terms of exhibiting photoimage photosensitive matrix photocamera, digitized physical sizes of photosensitive matrix informative model raw-format jpeg

@Booklet{EasyChair:5034,
  author = {Bohdan Kovalskyi and Myroslava Dubnevych and Tetyana Holubnyk},
  title = {Information Model for Determining the Significance of Factors Influencing the Level of Digital Noise in Photographic Images},
  howpublished = {EasyChair Preprint no. 5034},

  year = {EasyChair, 2021}}