DSeg: A dynamic image segmentation program to extract backbone patterns for filamentous bacteria and hyphae structures

Abstract

MotivationQuantitative image analysis of growing filamentous fungi and prokaryotes are important to detect and evaluate morphological effects of growth conditions, compounds and mutations. However, analysis of time-series image data is often limited by the ability of the algorithms to accurately segment structures that are complicated or if an organism is within a crowded population. To overcome these issues we present DSeg; an image analysis program designed to process time-series image data as well as single images to find multiple filamentous structures e.g., filamentous prokaryotes, yeasts and molds using a dynamic segmentation approach. DSeg automatically segments and analyzes objects, includes drift correction, and outputs statistical data such as persistence length, growth rate and growth direction.\n\nAvailability and implementationDSeg is a free open-source program written in MATLAB. DSeg can be downloaded as a package from https://sourceforge.net/projects/dseg-software.\n\nContactmagnus.andersson@umu.se and hanqing.zhang@umu.se\n\nSupplementary informationSupplementary data are available at online.