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Histogram of oriented gradients: A technique for the study of molecular cloud formation

Soler, Juan Diego; Beuther, H.; Rugel, M; Wang, Y.; Clark, P. C.; Glover, Simon C O; Goldsmith, Paul F; Heyer, Mark; Anderson, L.D.; McClure-Griffiths, Naomi; Menten, K M; Smith, Rowan J.


We introduce the histogram of oriented gradients (HOG), a tool developed for machine vision that we propose as a new metric for the systematic characterization of spectral line observations of atomic and molecular gas and the study of molecular cloud formation models. In essence, the HOG technique takes as input extended spectral-line observations from two tracers and provides an estimate of their spatial correlation across velocity channels. We characterized HOG using synthetic observations of...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361/201834300
Access Rights: Open Access


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