PDF 2.0 Application Note 001: Black Point Compensation
The PDF 2.0 Application Note 001: Black Point Compensation (BPC) is the first PDF 2.0 Application Note to be published by the PDF Association.
BPC is a technique used in colour management. It adjusts the colour transformation that will be applied, especially towards the shadow end of the tone scale, by aligning the darkest colour that could be described by the colour space of the data to be displayed with the darkest colour that the output profile for the display device (screen or print) can produce. Enabling BPC will often increase the perceived quality of graphical elements such as natural photographic images because they may achieve a higher contrast and more ‘punch’.
The black point compensation algorithm as used in PDF is formally defined in ISO 18619:2015. This document is intended to supplement both ISO 18619 and ISO 32000-2., and assumes that readers are familiar with both documents.
This document is freely available under a CC-BY 4.0 license.
This application note describes the benefits of the new PDF 2.0 Black point compensation feature, which can be controlled on a per-object basis.
Published by the PDF Association © 2018
Community: PDF TWG
Publications: PDF 2.0 Application Note 002: Associated Files, PDF 2.0 Application Note 003: Use of object metadata streams