{"id":291,"date":"2025-12-18T16:08:23","date_gmt":"2025-12-18T15:08:23","guid":{"rendered":"https:\/\/www.ksaerial.cz\/blog\/?p=291"},"modified":"2025-12-19T20:40:12","modified_gmt":"2025-12-19T19:40:12","slug":"neni-les-jako-les-jak-menime-letecke-snimky-na-presna-data","status":"publish","type":"post","link":"https:\/\/www.ksaerial.cz\/blog\/neni-les-jako-les-jak-menime-letecke-snimky-na-presna-data\/","title":{"rendered":"Nen\u00ed les jako les: Jak m\u011bn\u00edme leteck\u00e9 sn\u00edmky na p\u0159esn\u00e1 data"},"content":{"rendered":"\n

Leteck\u00e1 fotka lesa nebo sadu je kr\u00e1sn\u00e1 v\u011bc. Z v\u00fd\u0161ky vypad\u00e1 krajina \u00fahledn\u011b a p\u0159ehledn\u011b. Jen\u017ee co kdy\u017e nepot\u0159ebujete jen p\u011bkn\u00fd obr\u00e1zek na ze\u010f, ale pot\u0159ebujete tvrd\u00e1 data<\/strong>? Co kdy\u017e pot\u0159ebujete p\u0159esn\u011b v\u011bd\u011bt, kolik strom\u016f na pozemku stoj\u00ed, jak jsou vysok\u00e9 a v jak\u00e9 jsou kondici?<\/p>\n\n\n\n

V KS aerial works<\/strong> nekon\u010d\u00edme u hezk\u00fdch obr\u00e1zk\u016f. Jdeme do hloubky. Tam, kde kon\u010d\u00ed b\u011b\u017en\u00e1 fotografie, za\u010d\u00edn\u00e1 na\u0161e pr\u00e1ce s daty.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Jak to prob\u00edhalo v ter\u00e9nu: Zima, mlha a 15 minut akce<\/h2>\n\n\n\n

Realita leteck\u00fdch prac\u00ed nen\u00ed v\u017edy jen o azurov\u00e9 obloze. Tento projekt byl uk\u00e1zkov\u00fdm p\u0159\u00edkladem toho, \u017ee p\u0159\u00edrod\u011b neporu\u010d\u00edte.<\/p>\n\n\n\n

Vyrazili jsme nadvakr\u00e1t. Prvn\u00ed den n\u00e1s p\u0159iv\u00edtalo typick\u00e9 sychrav\u00e9 po\u010das\u00ed \u2013 poprch\u00e1valo a nad lesem se v\u00e1lela mlha. I kdy\u017e na\u0161e technika snese hodn\u011b, pro kvalitn\u00ed fotogrammetrii pot\u0159ebujeme perfektn\u00ed viditelnost. Bezpe\u010dnost a kvalita dat jsou pro n\u00e1s na prvn\u00edm m\u00edst\u011b, tak\u017ee jsme akci rad\u011bji odlo\u017eili.<\/p>\n\n\n\n

Druh\u00fd pokus? To u\u017e byla jin\u00e1 k\u00e1va. Slunce sv\u00edtilo naplno, ale teplom\u011br ukazoval nekompromisn\u00edch -4 \u00b0C<\/strong>. Zat\u00edmco my jsme na zemi „klepali kosu“, na\u0161e DJI Matrice 4T<\/strong> se uk\u00e1zala jako naprost\u00fd profesion\u00e1l. Celou oblast m\u011bla nal\u00e9tanou a naskenovanou za pouh\u00fdch 15 minut<\/strong>.<\/p>\n\n\n\n

P\u0159edstavte si, jak dlouho by v tom mrazu trvalo geodet\u016fm nebo lesn\u00edk\u016fm zam\u011b\u0159it ka\u017ed\u00fd strom ru\u010dn\u011b. My jsme m\u011bli hotovo d\u0159\u00edv, ne\u017e n\u00e1m stihl vychladnout \u010daj v termosce.<\/p>\n\n\n\n

Kouzlo zpracov\u00e1n\u00ed dat: Kdy\u017e si software porad\u00ed se sluncem<\/h2>\n\n\n\n

Ostr\u00e9 zimn\u00ed slunce sice pot\u011b\u0161\u00ed fotografa, ale pro tvorbu 3D model\u016f m\u016f\u017ee b\u00fdt zr\u00e1dn\u00e9 kv\u016fli dlouh\u00fdm st\u00edn\u016fm. Tady se ale uk\u00e1zala s\u00edla modern\u00edho softwaru.<\/p>\n\n\n\n

Nasb\u00edran\u00e1 data jsme prohnali p\u0159es WebODM<\/strong>. V\u00fdsledek n\u00e1s mile p\u0159ekvapil \u2013 software si s kontrastn\u00edm osv\u011btlen\u00edm poradil skv\u011ble a vygeneroval \u010dist\u00fd a p\u0159esn\u00fd model.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Co p\u0159esn\u011b klient dostal?<\/h2>\n\n\n\n

Cel\u00fd proces zpracov\u00e1n\u00ed se skl\u00e1dal z t\u011bchto krok\u016f:<\/p>\n\n\n\n

    \n
  1. Leteck\u00e9 skenov\u00e1n\u00ed:<\/strong> Rychl\u00fd sb\u011br dat s vysok\u00fdm p\u0159ekryvem sn\u00edmk\u016f.<\/li>\n\n\n\n
  2. Tvorba 3D mra\u010dna bod\u016f:<\/strong> Digit\u00e1ln\u00ed dvoj\u010de lesa, kde m\u00e1 ka\u017ed\u00fd strom sv\u00e9 sou\u0159adnice.<\/li>\n\n\n\n
  3. Anal\u00fdza v QGIS:<\/strong> V tomto analytick\u00e9m n\u00e1stroji jsme provedli p\u0159esn\u00e9 s\u010d\u00edt\u00e1n\u00ed strom\u016f.<\/li>\n\n\n\n
  4. V\u00fdstup v S-JTSK:<\/strong> Data jsme p\u0159edali v sou\u0159adnicov\u00e9m syst\u00e9mu, se kter\u00fdm rovnou pracuj\u00ed geodeti a projektanti.<\/li>\n<\/ol>\n\n\n\n
    \n
    \"\"<\/a><\/figure>\n\n\n\n
    \"\"<\/a><\/figure>\n\n\n\n
    \"\"<\/a><\/figure>\n<\/figure>\n\n\n\n

    <\/p>\n\n\n\n

    M\u00e1te les nebo sad a pot\u0159ebujete \u010d\u00edsla?<\/h2>\n\n\n\n

    A\u0165 u\u017e spravujete lesn\u00ed hospod\u00e1\u0159stv\u00ed, pl\u00e1nujete k\u00e1cen\u00ed, nebo pot\u0159ebujete pasportizaci ovocn\u00e9ho sadu, ru\u010dn\u00ed po\u010d\u00edt\u00e1n\u00ed je minulost\u00ed. Z\u00edskejte p\u0159esn\u00fd p\u0159ehled o sv\u00e9m majetku bez nutnosti prod\u00edrat se k\u0159ov\u00edm nebo mrznout hodiny v ter\u00e9nu.<\/p>\n\n\n\n

    Ozv\u011bte se n\u00e1m.<\/a><\/strong> R\u00e1di s v\u00e1mi probereme mo\u017enosti zam\u011b\u0159en\u00ed pr\u00e1v\u011b va\u0161\u00ed lokality.<\/p>\n\n\n\n

    <\/p>\n","protected":false},"excerpt":{"rendered":"

    Leteck\u00e1 fotka lesa nebo sadu je kr\u00e1sn\u00e1 v\u011bc. Z v\u00fd\u0161ky vypad\u00e1 krajina \u00fahledn\u011b a p\u0159ehledn\u011b. Jen\u017ee co kdy\u017e nepot\u0159ebujete jen p\u011bkn\u00fd obr\u00e1zek na ze\u010f, ale pot\u0159ebujete tvrd\u00e1 data? Co kdy\u017e pot\u0159ebujete p\u0159esn\u011b v\u011bd\u011bt, kolik strom\u016f na pozemku stoj\u00ed, jak jsou vysok\u00e9 a v jak\u00e9 jsou kondici? V KS aerial works nekon\u010d\u00edme u hezk\u00fdch obr\u00e1zk\u016f. Jdeme… Nen\u00ed les jako les: Jak m\u011bn\u00edme leteck\u00e9 sn\u00edmky na p\u0159esn\u00e1 data<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":297,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","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":"","iawp_total_views":15,"footnotes":""},"categories":[20,6],"tags":[7,8,11,13,9,10,12],"class_list":["post-291","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fotogrammetrie","category-projekty","tag-fotogrammetrie","tag-ks_aerialworks","tag-lesnictvi","tag-leteckeprace","tag-m4t","tag-mapovani","tag-qgis"],"_links":{"self":[{"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/posts\/291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/comments?post=291"}],"version-history":[{"count":6,"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/posts\/291\/revisions"}],"predecessor-version":[{"id":348,"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/posts\/291\/revisions\/348"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/media\/297"}],"wp:attachment":[{"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/media?parent=291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/categories?post=291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ksaerial.cz\/blog\/wp-json\/wp\/v2\/tags?post=291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}