{"id":16157,"date":"2024-04-12T10:30:42","date_gmt":"2024-04-12T10:30:42","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=16157"},"modified":"2024-04-12T10:30:43","modified_gmt":"2024-04-12T10:30:43","slug":"application-of-hough-algorithm-to-free-drop-analysis-of-hb-standard-model-in-a-ludwieg-tube","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/04\/12\/application-of-hough-algorithm-to-free-drop-analysis-of-hb-standard-model-in-a-ludwieg-tube\/","title":{"rendered":"Application of Hough Algorithm to Free Drop Analysis of HB Standard Model in a Ludwieg Tube"},"content":{"rendered":"\n<p><strong>EunJu Kim, Soo Hyung Park, Yung Hwan Byun<\/strong><\/p>\n\n\n\n<p><strong>DOI Number XXX-YYY-ZZZ<\/strong><\/p>\n\n\n\n<p><strong>Conference Number HiSST-2022-148<\/strong><\/p>\n\n\n\n<p>Determining the attitude angle of an aircraft can greatly help measure the force and moment<br>coefficients without any balance system. There are several ways to measure the force and moment of<br>a model. One of the most representative methods is the use of balance and free-flight module. The<br>method using balance has the disadvantage of having to build an additional DAQ system to receive<br>data. In addition, a deconvolution process that separates the signal from the model due to the vibration<br>of the support is essential. For the free-flight experiment, optical equipment for shadow graph<br>techniques and high-speed camera are required, but force and moment measurements are possible<br>without deconvolution process. The previous study of experimenting with existing free-flight modules<br>included counting pixels on direct images and using Harrison detector algorithm [1] to read and track<br>down points in the model.<br>In this study, we chose to read straight lines in the model, unlike the image processing method of the<br>preceding study. The algorithm used to read the straight lines on the image is the Hough algorithm.<br>Applying this algorithm in conjunction with the image processing technique allows the recognition of<br>straight lines of falling objects.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-148.pdf\" data-type=\"link\" data-id=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-148.pdf\">Read the full paper > <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>EunJu Kim, Soo Hyung Park, Yung Hwan Byun<\/b><\/p>\n<p>DOI Number XXX-YYY-ZZZ<\/p>\n<p>Conference Number HiSST-2022-148<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1006,1014],"tags":[1104,1103,1106,1107,1105],"class_list":["post-16157","post","type-post","status-publish","format-standard","hentry","category-events","category-hisst-2022","category-testing-and-evaluation-hisst-2022","tag-3-dof","tag-force-and-moment","tag-free-drop","tag-hb-standard-model","tag-hough-algorithm","category-993","category-1006","category-1014","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/comments?post=16157"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16157\/revisions"}],"predecessor-version":[{"id":16158,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16157\/revisions\/16158"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=16157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=16157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=16157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}