{"id":20620584,"url":"https://github.com/lcav/sphericalfri","last_synced_at":"2026-01-25T08:33:13.843Z","repository":{"id":28070266,"uuid":"31567363","full_name":"LCAV/SphericalFRI","owner":"LCAV","description":null,"archived":false,"fork":false,"pushed_at":"2015-03-03T00:35:37.000Z","size":156,"stargazers_count":0,"open_issues_count":0,"forks_count":2,"subscribers_count":9,"default_branch":"master","last_synced_at":"2025-05-27T18:45:13.165Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Matlab","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/LCAV.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2015-03-02T22:41:32.000Z","updated_at":"2015-03-03T00:35:37.000Z","dependencies_parsed_at":"2022-09-04T16:50:07.798Z","dependency_job_id":null,"html_url":"https://github.com/LCAV/SphericalFRI","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/LCAV/SphericalFRI","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/LCAV%2FSphericalFRI","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/LCAV%2FSphericalFRI/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/LCAV%2FSphericalFRI/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/LCAV%2FSphericalFRI/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/LCAV","download_url":"https://codeload.github.com/LCAV/SphericalFRI/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/LCAV%2FSphericalFRI/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28749382,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-01-25T08:31:04.260Z","status":"ssl_error","status_checked_at":"2026-01-25T08:30:28.859Z","response_time":113,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-11-16T12:14:55.307Z","updated_at":"2026-01-25T08:33:13.826Z","avatar_url":"https://github.com/LCAV.png","language":"Matlab","funding_links":[],"categories":[],"sub_categories":[],"readme":"# SphericalFRI\n\nThis repository contains a collection of Matlab routines to accompany the paper\n[_Sampling Sparse Signals on the Sphere: Algorithms and\nApplications_](http://arxiv.org/abs/1502.07577) by Ivan Dokmanić and Yue M. Lu\n\n__Dependecies__: This code requires some routines from the Spherical Harmonic\nTransform package SSHT by Jason McEwen and Yves Wiaux. SSSH can be obtained at\n[this link](http://www.jasonmcewen.org/codes/ssht/). Most of these dependencies will be removed in the future.\n\n## Main functions\n\n| Filename | Description |\n| ----------------- | ------------------- |\n| SphereFRI.m | Runs the FRI estimation algorithm |\n| DiracSpectrum.m | Computes the spectrum of a collection of Diracs |\n| RandomDiracs.m | Creates a random collection of spherical Diracs |\n| SphereFRI_SN.m | Estimation routine for the shot noise removal |\n| SelectEms.m | Selects data matrix elements for some m |\n| LegendreCoeffs.m | Coefficients of Legendre polynomials |\n| PolypartCoeffs.m | Coefficients of the polynomial part of the spherical harmonic |\n| CramerRaoBound.m | Computation of the Cramer Rao lower bound |\n| CmMatrix.m | Matrix of polynomial coefficients corresponding to m |\n\n__Note__: The code to generate the spherical harmonics currently can't generate harmonics of high orders (to be replaced soon).\n\n\n## Examples and paper figures\n\n| Filename | Description |\n| ----------------- | ------------------- |\n| Example1_Diracs.m | Simple reconstruction of a collection of Diracs |\n| Example2_Green.m | Some plots of the Helmholtz Green's function ove r a rigid sphere |\n| Example4_Green.m | Figure 7 from the paper (source localization) |\n| Example5_Green.m | Figure 8 from the paper (ratios of Green's functions) |\n| Example6_Diffusion.m | Diffusion kernel and aliasing error |\n| Example7_Diffusion.m | Diffusion reconstruction example |\n| Example8_ShotNoise.m | Shot noise removal example |\n\n## Authors\n\nIvan Dokmanić is with Laboratory for Audiovisual Communications\n([LCAV](http://lcav.epfl.ch)) at [EPFL](http://www.epfl.ch), Switzerland. Yue M. Lu is with Signals, Information, and Networks Group ([SING][http://lu.seas.harvard.edu]) at Harvard University, Cambridge, MA, USA.\n\n\u003cimg src=\"http://lcav.epfl.ch/files/content/sites/lcav/files/images/Home/LCAV_anim_200.gif\"\u003e\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flcav%2Fsphericalfri","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Flcav%2Fsphericalfri","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flcav%2Fsphericalfri/lists"}