Analysis of the Black and White Image Recording of the Converted RGB Photographic Image

Paper Details

Authors: Ćutić D.; Mikota M.; Turčić M.

DOI: 10.31803/tg-20240717132537

Journal: Tehnicki Glasnik

Year: 2026

Publisher: University North

Document Type: Article

Open Access: All Open Access; Gold Open Access

Cited by: 0

Abstract

A digital camera is generally used for digital recording of photographic images in the RGB system. When such a multicoloured photographic image is converted to black and white using the standard Grayscale conversion in Adobe Photoshop, the colour information, expressed as R, G and B channel values, is lost. This paper analyses the darkening caused by different conversions of the RGB record of a photographic image to a black and white image record. The conversions were performed on three photos, with 10 random colours separated for each photo before conversion. After conversion, the L parameter, which indicates the brightness value, was analysed. The changes in the L parameter due to different methods of photo conversion from multicolour to black and white, such as desaturation, extraction of the R channel, extraction of the G channel and extraction of the B channel, were also analysed. © 2026 University North. All rights reserved.

Keywords

black and white image; Grayscale system; L parameter; photo conversion; RGB system

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