NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
AbsorbanceQ: An App for Generating Absorbance Images from Brightfield Images
Published
Author(s)
Stephen Zimmerman, Carl Simon Jr., Greta Babakhanova
Abstract
The AbsorbanceQ app converts brightfield microscope images into absorbance images that can be analyzed and compared across different operators, microscopes and time. Absorbance-based measurements are comparable, which is useful when the aim is to manufacture biotherapeutics with consistent quality. AbsorbanceQ will be of value to those who want to capture quantitative absorbance images of cells. The AbsorbanceQ app has two modes - a single image processing mode and a batch processing mode for multiple images. Instructions for using the app are given on the 'App Information' tab when the app is opened. The input and output images for the app have been defined, and synthetic images were used to validate that the output images are correct. This manuscript describes how to use the app and provides links to a website where images for testing the app to ensure proper functionality are stored.
Zimmerman, S.
, Simon Jr., C.
and Babakhanova, G.
(2022),
AbsorbanceQ: An App for Generating Absorbance Images from Brightfield Images, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/jres.126.039, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932805
(Accessed October 9, 2025)