{"id":12028,"date":"2026-03-16T10:25:08","date_gmt":"2026-03-16T09:25:08","guid":{"rendered":"https:\/\/fermi.univ-tlse3.fr\/?post_type=tribe_events&#038;p=12028"},"modified":"2026-03-17T15:20:28","modified_gmt":"2026-03-17T14:20:28","slug":"les-capacites-dun-microscope-revelees-par-fourier-emmanuel-soubies-cemes-seminar-19-03-2026-11-h","status":"publish","type":"tribe_events","link":"https:\/\/fermi.univ-tlse3.fr\/fr\/home\/event\/les-capacites-dun-microscope-revelees-par-fourier-emmanuel-soubies-cemes-seminar-19-03-2026-11-h\/","title":{"rendered":"Les capacit\u00e9s d\u2019un microscope r\u00e9v\u00e9l\u00e9es par Fourier.  &#8211; (Emmanuel Soubi\u00e9s \/ CEMES \/  Seminar). &#8211; 19\/03\/2026, 11 H"},"content":{"rendered":"<p><span style=\"font-size: 20px; background-color: #f18500;\">S\u00e9minaire du Jeudi, CEMES<\/span><\/p>\n<p><span style=\"font-size: 20px;\"><span style=\"color: #191970;\"><strong>Emmanuel Soubi\u00e9s<\/strong><\/span> IRIT<br \/>\n<\/span><\/p>\n<p><span style=\"background-color: #cecece;\">CEMES, 19\/03\/2026, 11H<\/span><\/p>\n<p><strong>R\u00e9sum\u00e9 :<\/strong><br \/>\nDans cet expos\u00e9, je commencerai par introduire et illustrer un outil fondamental du traitement du signal et de l\u2019image : la transform\u00e9e de Fourier. Cet outil permet notamment d&rsquo;analyser les limites de performance de syst\u00e8mes d&rsquo;imagerie, autrement dit, jusqu&rsquo;o\u00f9 un syst\u00e8me d&rsquo;imagerie peut voir ? Dans ce contexte je m&rsquo;int\u00e9resserai \u00e0 deux techniques de microscopie :<br \/>\n&#8211; La microscopie SIM (Structured Illumination Microscopy), une technique de microscopie de fluorescence qui permet de doubler la r\u00e9solution des microscopes conventionnels et de d\u00e9passer la limite de diffraction. Nous verrons comment l\u2019analyse de Fourier permet de comprendre de mani\u00e8re intuitive l\u2019origine de ce gain de r\u00e9solution.<br \/>\n&#8211; La microscopie ISOM (Interference Scanning Optical Probe Microscopy), d\u00e9velopp\u00e9e par Wolfgang Bacsa au CEMES. Contrairement \u00e0 la SIM, cette technique ne n\u00e9cessite pas de marquage fluorescent. Je pr\u00e9senterai les r\u00e9sultats r\u00e9cents issus de notre collaboration, dans lesquels nous proposons une \u00e9tude th\u00e9orique de la r\u00e9solution atteignable par ISOM \u00e0 l\u2019aide d\u2019une analyse de Fourier. Ces travaux mettent en \u00e9vidence le potentiel de cette approche et ouvrent de belles perspectives.<\/p>\n<p>Dans les deux cas, j\u2019\u00e9voquerai les probl\u00e8mes math\u00e9matiques pos\u00e9s par la reconstruction des images, et montrerai comment l\u2019analyse de Fourier permet aussi d\u2019orienter la conception des algorithmes.<\/p>\n<hr \/>\n<p><div class=\"leaflet-map WPLeafletMap\" style=\"height:300px; width:70%;\"><\/div><script>\nwindow.WPLeafletMapPlugin = window.WPLeafletMapPlugin || [];\nwindow.WPLeafletMapPlugin.push(function WPLeafletMapShortcode() {\/*<script>*\/\nvar baseUrl = atob('aHR0cHM6Ly97c30udGlsZS5vcGVuc3RyZWV0bWFwLm9yZy97en0ve3h9L3t5fS5wbmc=');\nvar base = (!baseUrl && window.MQ) ?\n    window.MQ.mapLayer() : L.tileLayer(baseUrl,\n        L.Util.extend({}, {\n            detectRetina: 0,\n        },\n        {\"subdomains\":\"abc\",\"noWrap\":false,\"maxZoom\":18}        )\n    );\n    var options = L.Util.extend({}, {\n        layers: [base],\n        attributionControl: false\n    },\n    {\"zoomControl\":true,\"scrollWheelZoom\":true,\"doubleClickZoom\":true,\"fitBounds\":true,\"minZoom\":9,\"maxZoom\":18,\"maxBounds\":null,\"attribution\":\"<a href=\\\"http:\\\/\\\/leafletjs.com\\\" title=\\\"Une biblioth\\u00e8que JS pour des cartes interactives\\\">Leaflet<\\\/a>; \\u00a9 <a href=\\\"http:\\\/\\\/www.openstreetmap.org\\\/copyright\\\">OpenStreetMap<\\\/a> contributeurs\"},\n    {});\nwindow.WPLeafletMapPlugin.createMap(options).setView([43.579318389757,1.462611999468],16);window.WPLeafletMapPlugin.createScale({});});<\/script><br \/>\n<script>\nwindow.WPLeafletMapPlugin = window.WPLeafletMapPlugin || [];\nwindow.WPLeafletMapPlugin.push(function WPLeafletMarkerShortcode() {\/*<script>*\/\nvar map = window.WPLeafletMapPlugin.getCurrentMap();\nvar group = window.WPLeafletMapPlugin.getCurrentGroup();\nvar marker_options = window.WPLeafletMapPlugin.getIconOptions({});\nvar marker = L.marker(\n    [0,0],\n    marker_options\n);\nvar is_image = map.is_image_map;\n    marker.setLatLng( map.getCenter() );\nif (marker_options.draggable) {\n    marker.on('dragend', function () {\n        var latlng = this.getLatLng();\n        var lat = latlng.lat;\n        var lng = latlng.lng;\n        if (is_image) {\n            console.log('leaflet-marker y=' + lat + ' x=' + lng);\n        } else {\n            console.log('leaflet-marker lat=' + lat + ' lng=' + lng);\n        }\n    });\n}\nmarker.addTo( group );\nmarker.bindPopup(window.WPLeafletMapPlugin.unescape('CEMES'));window.WPLeafletMapPlugin.markers.push( marker );\n        });<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lieu : salle de conf\u00e9rence du CEMES<\/p>\n","protected":false},"author":5,"featured_media":0,"template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","neve_meta_reading_time":"","_tribe_events_status":"","_tribe_events_status_reason":"","footnotes":""},"tags":[],"tribe_events_cat":[306,48,233],"class_list":["post-12028","tribe_events","type-tribe_events","status-publish","hentry","tribe_events_cat-cemes","tribe_events_cat-events","tribe_events_cat-seminars","cat_cemes","cat_events","cat_seminars"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - 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