{"data":{"id":"10.4121/46b7654e-ea61-4d3a-a55b-ae61c5fbc91c","type":"dois","attributes":{"doi":"10.4121/46b7654e-ea61-4d3a-a55b-ae61c5fbc91c","prefix":"10.4121","suffix":"46b7654e-ea61-4d3a-a55b-ae61c5fbc91c","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Hesam Araghi","nameType":"Personal","givenName":"Hesam","familyName":"Araghi","nameIdentifiers":[{"nameIdentifier":"0000-0002-4539-4408","nameIdentifierScheme":"https://orcid.org/"}],"affiliation":[]},{"name":"Nergis Tömen","nameType":"Personal","givenName":"Nergis","familyName":"Tömen","nameIdentifiers":[{"nameIdentifier":"0000-0003-3916-1859","nameIdentifierScheme":"https://orcid.org/"}],"affiliation":[]},{"name":"Jan van Gemert","nameType":"Personal","givenName":"Jan","familyName":"van Gemert","nameIdentifiers":[{"nameIdentifier":"0000-0002-6913-0482","nameIdentifierScheme":"https://orcid.org/"}],"affiliation":[]}],"titles":[{"title":"Code supporting the paper \"Static in Frames, Dynamic in Events: Rethinking Features in Event Cameras as Motion Cues\""}],"publisher":"4TU.ResearchData","container":{},"publicationYear":2026,"subjects":[{"subject":"Electrical and Electronic Engineering","subjectScheme":"Australian and New Zealand Standard Research Classification (ANZSRC), 2008","classificationCode":"0906"},{"subject":"Engineering","subjectScheme":"Australian and New Zealand Standard Research Classification (ANZSRC), 2008","classificationCode":"09"},{"subject":"Event cameras"},{"subject":"Event features"},{"subject":"Motion cues"},{"subject":"Optical flow"},{"subject":"Neuromorphic machine vision"}],"contributors":[{"name":"TU Delft, Faculty of Electrical Engineering, Mathematics and Computer Science, Department of Intelligent Systems, Pattern Recognition \u0026 Bioinformatics, Delft, The Netherlands","nameType":"Organizational","contributorType":"Other","affiliation":[],"nameIdentifiers":[]}],"dates":[{"date":"2026-08-11","dateType":"Issued"}],"language":"en","types":{"ris":"COMP","bibtex":"misc","citeproc":"article","schemaOrg":"SoftwareSourceCode","resourceType":"Software","resourceTypeGeneral":"Software"},"relatedIdentifiers":[{"relationType":"IsVersionOf","relatedIdentifier":"10.4121/46b7654e-ea61-4d3a-a55b-ae61c5fbc91c.v1","relatedIdentifierType":"DOI"}],"relatedItems":[],"sizes":[],"formats":["script/.py / .sh / .yaml"],"version":"1","rightsList":[{"rights":"MIT License","rightsUri":"https://opensource.org/licenses/MIT","schemeUri":"https://spdx.org/licenses/","rightsIdentifier":"mit","rightsIdentifierScheme":"SPDX"}],"descriptions":[{"description":"Event cameras capture intensity changes asynchronously with high temporal resolution, requiring novel preprocessing methods for downstream tasks. Unlike static intensity snapshots, event data inherently encode information about scene dynamics and object motion, meaning that features derived from events can exhibit behaviors with no direct analogue in frame-based vision. In this paper, we analyze two features used in event-based corner detection---the eigenvalues of the structure tensor and the spatiotemporal density values---and show that they are motion cues. We hypothesize that these features, combined with local geometric information, can enhance motion estimation tasks. To validate this, we first theoretically analyze how the eigenvalues of the structure tensor at moving corner points relate to the direction of motion. We then design controlled experiments on a synthetic dataset, confirming that extending local geometric features with eigenvalues and density values provides complementary motion information and is robust to texture and shot noise. Finally, we integrate the proposed features into a state-of-the-art event-based optical flow network and evaluate on the real-world DSEC benchmark, where the added features consistently improve accuracy, with the largest gains in data-scarce scenarios and for lower-capacity models.","descriptionType":"Abstract"}],"geoLocations":[],"fundingReferences":[],"xml":"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","url":"https://data.4tu.nl/datasets/46b7654e-ea61-4d3a-a55b-ae61c5fbc91c","contentUrl":null,"metadataVersion":0,"schemaVersion":"http://datacite.org/schema/kernel-4","source":"api","isActive":true,"state":"findable","reason":null,"viewCount":0,"viewsOverTime":[],"downloadCount":0,"downloadsOverTime":[],"referenceCount":0,"citationCount":0,"citationsOverTime":[],"partCount":0,"partOfCount":0,"versionCount":0,"versionOfCount":1,"created":"2026-08-11T15:10:11.000Z","registered":"2026-08-11T15:10:15.000Z","published":"2026","updated":"2026-08-11T15:10:15.000Z"},"relationships":{"client":{"data":{"id":"delft.data4tu","type":"clients"}},"provider":{"data":{"id":"scpr","type":"providers"}},"media":{"data":{"id":"10.4121/46b7654e-ea61-4d3a-a55b-ae61c5fbc91c","type":"media"}},"references":{"data":[]},"citations":{"data":[]},"parts":{"data":[]},"partOf":{"data":[]},"versions":{"data":[]},"versionOf":{"data":[{"id":"10.4121/46b7654e-ea61-4d3a-a55b-ae61c5fbc91c.v1","type":"dois"}]}}}}