Climbing the Contrast Pyramid

Climbing the Contrast Pyramid | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Climbing the Contrast Pyramid Walter G. Kropatsch This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8789176/v1 This work is licensed under a CC BY 4.0 License Status: Under Revision Version 1 posted 12 You are reading this latest preprint version Abstract A contrast pyramid is a multi-resolution image representation where every levelconsists of a plane multi-graph that is adapted level by level to the contentof the image. The base level is the 4-neighborhood graph of the image. Theequipment to climb the pyramid level-by-level consists of following ingredients:(1) edge contraction and (2) edge removal. Edges have one main attribute: (3)the contrast between the two connected pixels. Edges with contrast zero connectidentical pixels and are contracted rst. Then the contrast of contracted edgesslowly increases up to the top. Novel equipment includes (4) a contrast histogram,(5) a discrete spiral total order, (6) a max-link strategy generating eciently aspanning forest of the image. This contribution explores the main properties thatrelate the top of the pyramid with the features of the lower level image featuresin order to be able to explain the view from the top by the existing properties inthe base. Contrast pyramid Spiral total order Max-Link strategy Multi-Resolution Image representation Graph Pyramids Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Revision Version 1 posted Editorial decision: Revision requested 15 Apr, 2026 Reviews received at journal 10 Apr, 2026 Reviews received at journal 29 Mar, 2026 Reviews received at journal 22 Mar, 2026 Reviewers agreed at journal 13 Mar, 2026 Reviewers agreed at journal 13 Mar, 2026 Reviewers agreed at journal 20 Feb, 2026 Reviewers agreed at journal 15 Feb, 2026 Reviewers invited by journal 11 Feb, 2026 Editor assigned by journal 11 Feb, 2026 Submission checks completed at journal 09 Feb, 2026 First submitted to journal 04 Feb, 2026 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-8789176","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":592418794,"identity":"1598cdc2-aff7-408b-8a5e-934aa46f67c2","order_by":0,"name":"Walter G. 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