{"id":1076,"date":"2018-03-27T14:45:28","date_gmt":"2018-03-27T14:45:28","guid":{"rendered":"https:\/\/freetargets.net\/?p=1076"},"modified":"2020-03-04T06:11:08","modified_gmt":"2020-03-04T06:11:08","slug":"web-kameras","status":"publish","type":"post","link":"https:\/\/freetargets.net\/de\/web-kameras\/","title":{"rendered":"WEB-Kameras"},"content":{"rendered":"<p>Mit normalen WEB-Cams l\u00e4sst sich der Laser-Impuls sehr gut erkennen. Infrarote Laser werden leider zuwenig oder gar nicht erkannt. F\u00fcr infrarote Laser-Trainer muss der Infrarot-Filter der Kamera entfernt werden. Aber wie Alles im Leben haben auch WEB-Cams ihre Vor- und Nachteile<\/p>\n<ul>\n<li>\n<h4>Vorteile<\/h4>\n<ul>\n<li>Kosteng\u00fcnstig<\/li>\n<li>Kann in Notebooks als Rear-Camera bereits vorhanden sein<\/li>\n<li>Durch manuelle Einstellungen hohe Anzahl Bilder pro Sekunde (f\/sec)<\/li>\n<li>Praktisch und brauchbar<\/li>\n<\/ul>\n<\/li>\n<li>\n<h4>&nbsp;Nachteile<\/h4>\n<ul>\n<li><strong>Schlechte Aufl\u00f6sung<\/strong><br \/>\nObwohl Bilder in einer HD Aufl\u00f6sung ausgegeben werden k\u00f6nnen, werden die Bilder intern in den allermeisten Kameras interpoliert. Auch in HD-WEB-Cams werden meist kosteng\u00fcnstige 600\u00d7480 \/ 640\u00d7480 Sensoren verbaut, die Bilder werden dann intern auf h\u00f6here Aufl\u00f6sungen hochgerechnet. Die Laser-Impuls Erkennung ist aber nur so gut wie die reale Aufl\u00f6sung des Bild-Sensors<\/li>\n<li><strong>Kleine Objektive<\/strong><br \/>\nDa die Objektive (Linsen) von WEB-Cams gegen\u00fcber der Bildsensorgr\u00f6sse sehr klein sind, kann auch nur sehr wenig Licht auf meist kosteng\u00fcnstigen und entsprechend langsamen Bildsensor fallen. Da der Sensor aber eine gewisse Menge an Licht-Energie ben\u00f6tigt, muss entsprechend die Belichtungszeit l\u00e4nger sein. Dies resultiert in einer geringen Framerate (Bilder pro Sekunde) und entsprechend verz\u00f6gerter Schuss-Erkennung.<br \/>\nDurch eine manuelle Verk\u00fcrzung der Belichtungszeit innerhalb der WEB-Cam Steuersoftware kann aber dieser Effekt kompensiert werden. Das Bild der WEB-Cam wird dadurch zwar fast Schwarz, der Laser-Impuls wird aber immer noch gen\u00fcgend erkannt<\/li>\n<li><strong>Kein Zoom-Objektiv<\/strong><br \/>\nDas Bild der WEB-Cam kann nicht optisch auf die Gr\u00f6sse der gefilmten Leinwand angepasst werden. Eine digitale Anpassung sieht zwar gut aus, erh\u00f6ht aber nicht die Aufl\u00f6sung. Je kleiner nun die gefilmte Leinwand innerhalb der WEB-Cam Bilder, desto geringer die Genauigkeit der Schusserkennung<\/li>\n<li><strong>USB2 Anschluss<\/strong><br \/>\nDie USB2 Schnittstelle ist zwar praktisch, aber eigentlich keine gute Computer-Schnittstelle. Extremer Overhead (zus\u00e4tzliche Daten zu den eigentlichen WEB-Cam Bildern) und extremer Computer-Ressourcen Verbrauch (Ressourcen, welche dann in Deinen Trainingseinheiten fehlen k\u00f6nnen)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<h4>Infrarot Filter entfernen<\/h4>\n<ul>\n<li><a title=\"Converting Microsoft Lifecam Cinema HD Webcam for infrared imaging\" href=\"http:\/\/dslrmodifications.com\/lifecam\/lifecam1.html\">Converting Microsoft Lifecam Cinema HD Webcam for infrared imaging<\/a><\/li>\n<li><a title=\"How to make DIY camera that can see near-infrared\" href=\"https:\/\/www.youtube.com\/watch?v=HjvpyO1cJOM\" target=\"_blank\" rel=\"noopener noreferrer\">How to make DIY camera that can see near-infrared<\/a><\/li>\n<li><a title=\"Turn any Web Cam into an infrared night vision web cam within 5 min\" href=\"https:\/\/www.youtube.com\/watch?v=1oGN0tVLeiw\" target=\"_blank\" rel=\"noopener noreferrer\">Turn any Web Cam into an infrared night vision web cam within 5 min<\/a><\/li>\n<li><a title=\"How to convert a Webcam to a near-infrared camera\" href=\"https:\/\/www.youtube.com\/watch?v=ihuHuC12328\" target=\"_blank\" rel=\"noopener noreferrer\">How to convert a Webcam to a near-infrared camera<\/a><\/li>\n<li><a title=\"Infrared webcam hack\" href=\"https:\/\/www.youtube.com\/watch?v=zCJsrh51Ac4\" target=\"_blank\" rel=\"noopener noreferrer\">Infrared webcam hack<\/a><\/li>\n<li><a title=\"How-to turn a cheap Webcam into an infrared camera\" href=\"https:\/\/www.youtube.com\/watch?v=0qQ8RA7L69A\" target=\"_blank\" rel=\"noopener noreferrer\">How-to turn a cheap Webcam into an infrared camera<\/a><\/li>\n<li><a title=\"How-to turn a Webcam into night vision cam\" href=\"https:\/\/www.youtube.com\/watch?v=Od7Co8-m9qs\" target=\"_blank\" rel=\"noopener noreferrer\">How-to turn a Webcam into night vision cam<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Mit normalen WEB-Cams l\u00e4sst sich der Laser-Impuls sehr gut erkennen. Infrarote Laser werden leider zuwenig oder gar nicht erkannt. F\u00fcr infrarote Laser-Trainer muss der Infrarot-Filter der Kamera entfernt werden. Aber wie Alles im Leben haben auch WEB-Cams ihre Vor- und Nachteile Vorteile Kosteng\u00fcnstig Kann in Notebooks als Rear-Camera bereits vorhanden sein Durch manuelle Einstellungen hohe [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6025,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":""},"categories":[129],"tags":[443,142,141],"scenes-manufacturer":[],"class_list":["post-1076","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kameras","tag-objektive","tag-usb","tag-web-kameras"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>WEB-Kameras | Freetargets<\/title>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"WEB-Kameras | Freetargets\" \/>\n<meta property=\"og:description\" content=\"Mit normalen WEB-Cams l\u00e4sst sich der Laser-Impuls sehr gut erkennen. Infrarote Laser werden leider zuwenig oder gar nicht erkannt. F\u00fcr infrarote Laser-Trainer muss der Infrarot-Filter der Kamera entfernt werden. Aber wie Alles im Leben haben auch WEB-Cams ihre Vor- und Nachteile Vorteile Kosteng\u00fcnstig Kann in Notebooks als Rear-Camera bereits vorhanden sein Durch manuelle Einstellungen hohe [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/freetargets.net\/de\/web-kameras\/\" \/>\n<meta property=\"og:site_name\" content=\"Freetargets\" \/>\n<meta property=\"article:published_time\" content=\"2018-03-27T14:45:28+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-03-04T06:11:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/freetargets.net\/wp-content\/uploads\/2018\/03\/Microsoft-LifeCam-Studio.png\" \/>\n\t<meta property=\"og:image:width\" content=\"664\" \/>\n\t<meta property=\"og:image:height\" content=\"950\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" 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href=\"https:\/\/freetargets.net\/de\/category\/faq\/kameras\/\" class=\"advgb-post-tax-term\">Kameras<\/a>"],"unlinked":["<span class=\"advgb-post-tax-term\">Kameras<\/span>"]},"tags":{"linked":["<a href=\"https:\/\/freetargets.net\/de\/category\/faq\/kameras\/\" class=\"advgb-post-tax-term\">Objektive<\/a>","<a href=\"https:\/\/freetargets.net\/de\/category\/faq\/kameras\/\" class=\"advgb-post-tax-term\">USB<\/a>","<a href=\"https:\/\/freetargets.net\/de\/category\/faq\/kameras\/\" class=\"advgb-post-tax-term\">WEB-Kameras<\/a>"],"unlinked":["<span class=\"advgb-post-tax-term\">Objektive<\/span>","<span class=\"advgb-post-tax-term\">USB<\/span>","<span class=\"advgb-post-tax-term\">WEB-Kameras<\/span>"]}},"comment_count":"0","relative_dates":{"created":"Posted 8\u00a0Jahren ago","modified":"Updated 6\u00a0Jahren ago"},"absolute_dates":{"created":"Posted on M\u00e4rz 27, 2018","modified":"Updated on M\u00e4rz 4, 2020"},"absolute_dates_time":{"created":"Posted on M\u00e4rz 27, 2018 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