Luminance noise
Luminance noise (also known as brightness noise ) occurs when there are independent random signals in the brightness channel of a digital image . The picture on the right gives a two-dimensional example of pure luminance noise with a typical spectral power density distribution in which the signal amplitude decreases with a 1 / f characteristic ( 1 / f noise ).
literature
- Marc Altmann: Lightroom 4 practice. Photo workflow with Adobe Photoshop Lightroom 4th 1st edition. d.punkt Verlag, Heidelberg 2012, ISBN 978-3-89864-832-5 .
- Marc Altmann: Lightroom 5 practice. The handbook for photographers. 1st edition. d.punkt Verlag, Heidelberg 2013, ISBN 978-3-86490-124-9 .
- Stefan Weis: Photo school portrait photography. Exposure - poses - composition. Franzis Verlag, Poing 2009, ISBN 978-3-7723-7227-8 .
Web links
- Editing digital photos professionally (accessed October 12, 2017)