{"id":195,"date":"2021-07-03T19:50:00","date_gmt":"2021-07-03T11:50:00","guid":{"rendered":"http:\/\/47.107.115.238\/?p=195"},"modified":"2024-09-25T15:26:19","modified_gmt":"2024-09-25T07:26:19","slug":"%e6%b5%b7%e6%b4%8b%e6%b0%b4%e6%b7%b1%e6%b5%8b%e9%87%8f","status":"publish","type":"post","link":"https:\/\/lxylp.com\/?p=195","title":{"rendered":"\u6d77\u6d0b\u6c34\u6df1\u6d4b\u91cf"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\u5229\u7528ENVI SPEAR\u5de5\u5177\u548cWV-2\u6570\u636e\u91cf\u6d4b\u6c34\u6df1<\/h1>\n\n\n\n<p>\u6211\u4eec\u4f7f\u7528\u5de5\u5177\u96c6\u4e2d\u7684SPEAR Relative Water Depth\uff08\u76f8\u5bf9\u6c34\u6df1\u91cf\u6d4b\u5de5\u5177\uff09\u83b7\u53d6\u6cbf\u6d77\u9644\u8fd1\u7684\u76f8\u5bf9\u6c34\u6df1\u3002\u4f7f\u7528WV-2\u591a\u5149\u8c312\u7c73\u5f71\u50cf\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u5305\u62ec\u5cb8\u8fb9\u3001\u6d45\u6d77\u3001\u548c\u6df1\u6d77\u7b49\u533a\u57df\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"\/pic\/bathymetric1.png\" alt=\"WV-2\u591a\u5149\u8c31\u5f71\u50cf\"\/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u542f\u52a8Toolbox\/SPEAR\/SPEAR Relative Water Depth\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u9009\u62e9\u5f71\u50cf\u6587\u4ef6\u548c\u8f93\u51fa\u8def\u5f84\uff0c\u5355\u51fbNext\u3002\u6ce8\uff1a\u5982\u679c\u56fe\u50cf\u6ca1\u6709\u4e2d\u5fc3\u6ce2\u957f\u4fe1\u606f\uff0c\u4f1a\u8df3\u51fa\u5bf9\u8bdd\u6846\u9009\u62e9\u76f8\u5e94\u7684\u6ce2\u6bb5\uff08blue\u3001green\u3001red\u3001nir\uff09\u3002 <img decoding=\"async\" src=\"\/pic\/bathymetric2.png\" alt=\"File Selection\u6b65\u9aa4\"><\/li>\n\n\n\n<li>\u5728Atmospheric Correction\u6b65\u9aa4\u4e2d\uff0c\u63d0\u4f9b\u5f88\u591a\u7684\u5927\u6c14\u6821\u6b63\u65b9\u6cd5\uff0c\u8fd9\u91cc\u9009\u62e9None\/Already corrected\uff0c\u5355\u51fbNext\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"\/pic\/bathymetric3.png\" alt=\"Atmospheric Correction\u6b65\u9aa4\"\/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728<code>Method Selection<\/code>\u6b65\u9aa4\u4e2d\uff0c\u9009\u62e9\u91cf\u6d4b\u65b9\u6cd5\uff0c\u63d0\u4f9b\u4e09\u79cd\u65b9\u6cd5\uff0c\u6bd4\u8f83\u7ecf\u5178\u548c\u7cbe\u786e\u7684\u65b9\u6cd5\u5c31\u662f<code>Log Ratio Transform<\/code>\uff0c\u5373\u5e95\u90e8\u53cd\u7167\u7387\u72ec\u7acb\u6c34\u6df1\u6d4b\u91cf\u7b97\u6cd5\uff08bottom albedo-independent Bathymetry algorithm)\u3002\u70b9\u5f00\u9ad8\u7ea7\u9009\u62e9\uff0c\u6709\u4e24\u4e2a\u53c2\u6570\u53ef\u4ee5\u8bbe\u7f6e\uff1a<\/li>\n\n\n\n<li>Median Filter\uff1a\u5bf9\u7ed3\u679c\u8fdb\u884c\u6ee4\u6ce2\u5904\u7406\uff0c\u4e3b\u8981\u8fc7\u6ee4\u9ad8\u9891\u566a\u58f0\uff0c\u6ee4\u6ce2\u6838\u8d8a\u5927\uff0c\u7ed3\u679c\u8d8a\u5e73\u6ed1\u3002<\/li>\n\n\n\n<li>Calibrate to absolute depth\uff1a\u901a\u8fc7\u5df2\u77e5\u70b9\u7684\u6df1\u5ea6\u4fe1\u606f\uff0c\u5f97\u5230\u7edd\u5bf9\u6c34\u6df1\u7ed3\u679c\u3002<\/li>\n\n\n\n<li>\u5355\u51fbNext\uff0c\u5f00\u59cb\u53cd\u6f14\u6c34\u6df1\uff0c\u4ece\u8fc7\u7a0b\u4e2d\u53ef\u4ee5\u770b\u5230\u6709\u4e00\u6b65\u662f\u8fdb\u884c\u6c34\u9646\u5206\u79bb\uff0c\u5f97\u5230\u6c34\u9762\u533a\u57df\uff0c\u4e4b\u540e\u5bf9\u6c34\u9762\u533a\u57df\u8fdb\u884c\u53cd\u6f14\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"\/pic\/bathymetric4.png\" alt=\"Method Selection\u6b65\u9aa4\"\/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Method Selection\u6b65\u9aa4\uff0c\u8fd9\u4e00\u6b65\u662f\u68c0\u67e5\u7ed3\u679c\uff0c\u6709\u4e00\u4e9b\u5de5\u5177\u5de5\u4f7f\u7528\uff0c\u5982\u53e0\u52a0\u663e\u793a\u3001\u989c\u8272\u3002<\/li>\n<\/ul>\n\n\n\n<p><img decoding=\"async\" src=\"\/pic\/bathymetric5.png\" alt=\"Examine Results\u6b65\u9aa4\"><br>\u5f97\u5230\u4e00\u4e2a\u503c\u8303\u56f40~1\u7684\u56fe\u50cf\u7ed3\u679c\uff0c\u5229\u7528Bandmath\u5de5\u5177\uff0c\u8868\u8fbe\u5f0f\u4e3a-B1\u5c06\u7ed3\u679c\u53d8\u6210\u8d1f\u503c\uff0c\u5728Toolbox \/Terrain\/3D SurfaceView\u4e2d\u6d4f\u89c8\u7ed3\u679c\uff0c\u53ef\u4ee5\u770b\u5230\u6d77\u5e95\u7684\u4e09\u7ef4\u60c5\u51b5\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"\/pic\/bathymetric6.png\" alt=\"\u4e09\u7ef4\u4e0b\u6d4f\u89c8\u7ed3\u679c\"\/><\/figure>\n\n\n\n<p>\u8f6c\u8f7d\u81ea <a href=\"https:\/\/www.cnblogs.com\/enviidl\/p\/16284629.html\">ENVI-IDL\u6280\u672f\u6bbf\u5802<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5229\u7528ENVI SPEAR\u5de5\u5177\u548cW&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":369,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[15],"class_list":["post-195","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-6","tag-15"],"_links":{"self":[{"href":"https:\/\/lxylp.com\/index.php?rest_route=\/wp\/v2\/posts\/195","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lxylp.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lxylp.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lxylp.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lxylp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=195"}],"version-history":[{"count":2,"href":"https:\/\/lxylp.com\/index.php?rest_route=\/wp\/v2\/posts\/195\/revisions"}],"predecessor-version":[{"id":484,"href":"https:\/\/lxylp.com\/index.php?rest_route=\/wp\/v2\/posts\/195\/revisions\/484"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lxylp.com\/index.php?rest_route=\/wp\/v2\/media\/369"}],"wp:attachment":[{"href":"https:\/\/lxylp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lxylp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lxylp.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}