{"id":11525,"date":"2025-04-27T00:19:39","date_gmt":"2025-04-26T22:19:39","guid":{"rendered":"https:\/\/geopard.tech\/?p=11525"},"modified":"2025-04-27T00:19:39","modified_gmt":"2025-04-26T22:19:39","slug":"kako-vecnamensko-zaznavanje-plevela-na-podlagi-sistema-yolov8-izboljsa-natancno-kmetijstvo-bombaza","status":"publish","type":"post","link":"https:\/\/geopard.tech\/sl\/blog\/how-yolov8-based-multi-weed-detection-boosts-cotton-precision-agriculture\/","title":{"rendered":"Kako zaznavanje ve\u010d plevelov na podlagi sistema YOLOv8 izbolj\u0161a precizno kmetovanje pri bomba\u017eu?"},"content":{"rendered":"<p class=\"ds-markdown-paragraph\">Gojenje bomba\u017ea je pomemben del kmetijstva v Zdru\u017eenih dr\u017eavah Amerike, saj pomembno prispeva h gospodarstvu. Samo v letu 2021 so kmetje pridelali ve\u010d kot 10 milijonov hektarjev bomba\u017ea in proizvedli ve\u010d kot 18 milijonov bal v vrednosti skoraj <span class=\"katex\"><span class=\"katex-mathml\">7,5 milijarde evrov. Kljub svojemu gospodarskemu pomenu se pridelava bomba\u017ea soo\u010da z velikim izzivom: pleveli. <\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"katex\"><span class=\"katex-mathml\">Pleveli, neza\u017eelene rastline, ki rastejo ob posevkih, tekmujejo z bomba\u017enimi rastlinami za osnovne vire, kot so voda, hranila in son\u010dna svetloba. \u010ce jih ne nadzorujemo, lahko zmanj\u0161ajo pridelek do 50 %.<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">7.5 <\/span><span class=\"mord mathnormal\">bi<\/span><span class=\"mord mathnormal\">ll<\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mord mathnormal\">o<\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mord\">.\u00a0<\/span><\/span><\/span><\/span>Poleg finan\u010dnih obremenitev prekomerna uporaba herbicidov povzro\u010da tudi okoljske te\u017eave, saj onesna\u017euje tla in vodne vire.<\/p>\n<p class=\"ds-markdown-paragraph\">Za re\u0161evanje teh izzivov se raziskovalci obra\u010dajo k tehnologijam natan\u010dnega kmetijstva - kmetijskemu pristopu, ki uporablja orodja, ki temeljijo na podatkih, za optimizacijo upravljanja na ravni polja. Ena od prelomnih re\u0161itev je model YOLOv8 - vrhunsko orodje umetne inteligence za odkrivanje plevela v realnem \u010dasu.<\/p>\n<h2 class=\"ds-markdown-paragraph\">Porast odpornosti na herbicide in njen vpliv<\/h2>\n<p class=\"ds-markdown-paragraph\">\u0160iroko raz\u0161irjena uporaba semen bomba\u017ea, odpornih na herbicide (HR) od leta 1996, je spremenila kmetijske prakse. Posevki HR so gensko spremenjeni tako, da pre\u017eivijo dolo\u010dene herbicide, kar kmetom omogo\u010da, da kemikalije, kot je glifosat, \u0161kropijo neposredno nad posevki, ne da bi jih po\u0161kodovali.<\/p>\n<p class=\"ds-markdown-paragraph\">Do leta 2020 bo 96% ameri\u0161kih povr\u0161in bomba\u017ea uporabljalo sorte HR, kar bo ustvarilo krog odvisnosti od herbicidov. Na za\u010detku je bil ta pristop u\u010dinkovit, vendar so pleveli s\u010dasoma z naravno selekcijo razvili odpornost.<\/p>\n<p class=\"ds-markdown-paragraph\">Danes je na herbicide odpornih plevelov oku\u017eenih 70% ameri\u0161kih kmetij, zaradi \u010desar morajo kmetje uporabljati 30% ve\u010d kemikalij kot pred desetletjem. Na primer Palmerjev amarant, hitro rasto\u010di plevel z visoko stopnjo razmno\u017eevanja, lahko zmanj\u0161a pridelek bomba\u017ea za 79%, \u010de se ga ne nadzoruje zgodaj.<\/p>\n<p><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" data-attachment-id=\"11537\" data-permalink=\"https:\/\/geopard.tech\/sl\/blog\/how-yolov8-based-multi-weed-detection-boosts-cotton-precision-agriculture\/impact-of-herbicide-resistance-on-u-s-farms\/\" data-orig-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?fit=2592%2C1869&amp;ssl=1\" data-orig-size=\"2592,1869\" data-comments-opened=\"1\" data-image-title=\"Impact of Herbicide Resistance on U.S. Farms\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?fit=1024%2C738&amp;ssl=1\" class=\"aligncenter wp-image-11537 size-full\" src=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?resize=810%2C584&#038;ssl=1\" alt=\"Vpliv odpornosti na herbicide na ameri\u0161kih kmetijah\" width=\"810\" height=\"584\" srcset=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?w=2592&amp;ssl=1 2592w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?resize=300%2C216&amp;ssl=1 300w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?resize=1024%2C738&amp;ssl=1 1024w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?resize=768%2C554&amp;ssl=1 768w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?resize=1536%2C1108&amp;ssl=1 1536w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?resize=2048%2C1477&amp;ssl=1 2048w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?w=1620&amp;ssl=1 1620w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/Impact-of-Herbicide-Resistance-on-U.S.-Farms.png?w=2430&amp;ssl=1 2430w\" sizes=\"(max-width: 810px) 100vw, 810px\" \/><\/p>\n<p class=\"ds-markdown-paragraph\">Finan\u010dno breme je ogromno: obvladovanje odpornih plevelov kmete letno stane ve\u010d milijard, odtekanje herbicidov pa onesna\u017ei 41% sladkovodnih virov v bli\u017eini kmetijskih zemlji\u0161\u010d. Ti izzivi poudarjajo nujno potrebo po inovativnih re\u0161itvah, ki zmanj\u0161ujejo odvisnost od kemikalij in hkrati ohranjajo produktivnost pridelkov.<\/p>\n<h2 class=\"ds-markdown-paragraph\">Strojni vid: Trajnostna alternativa za ravnanje s plevelom<\/h2>\n<p class=\"ds-markdown-paragraph\">Kot odgovor na krizo odpornosti proti herbicidom raziskovalci razvijajo sisteme strojnega vida - tehnologije, ki zdru\u017eujejo kamere, senzorje in algoritme umetne inteligence - za natan\u010dno odkrivanje in razvr\u0161\u010danje plevela. Strojni vid posnema \u010dlove\u0161ko vizualno zaznavanje, vendar z ve\u010djo hitrostjo in natan\u010dnostjo, kar omogo\u010da avtomatizirano sprejemanje odlo\u010ditev.<\/p>\n<p class=\"ds-markdown-paragraph\">Ti sistemi omogo\u010dajo ciljno usmerjene posege, kot so robotski plevniki, ki mehansko odstranjujejo rastline, ali pametni \u0161kropilniki, ki uporabljajo herbicide le tam, kjer je to potrebno. Zgodnje razli\u010dice teh tehnologij so imele te\u017eave z natan\u010dnostjo, saj so pogosto napa\u010dno prepoznale posevke kot plevel ali niso zaznale majhnih rastlin.<\/p>\n<p class=\"ds-markdown-paragraph\">Vendar je napredek na podro\u010dju globokega u\u010denja - podvrste strojnega u\u010denja, ki za analizo podatkov uporablja nevronske mre\u017ee z ve\u010d plastmi - bistveno izbolj\u0161al u\u010dinkovitost. Konvolucijske nevronske mre\u017ee (CNN), vrsta modela globokega u\u010denja, optimiziranega za analizo slik, so odli\u010dne pri prepoznavanju vzorcev v vizualnih podatkih.<\/p>\n<p class=\"ds-markdown-paragraph\">Dru\u017eina modelov YOLO (You Only Look Once), ki je znana po svoji hitrosti in natan\u010dnosti zaznavanja predmetov, je postala \u0161e posebej priljubljena v kmetijstvu. Najnovej\u0161a iteracija, YOLOv8, dosega natan\u010dnost ve\u010d kot 90% pri zaznavanju plevela, s \u010dimer spreminja pravila igre v preciznem kmetijstvu.<\/p>\n<h2 class=\"ds-markdown-paragraph\">Zbirka podatkov CottonWeedDet12: Osnova za uspeh<\/h2>\n<p class=\"ds-markdown-paragraph\">Za usposabljanje zanesljivih modelov umetne inteligence so potrebni visokokakovostni podatki, zbirka podatkov CottonWeedDet12 pa je klju\u010dni vir za raziskave odkrivanja plevela. Nabor podatkov je strukturirana zbirka podatkov, ki se uporablja za usposabljanje in testiranje modelov strojnega u\u010denja.<\/p>\n<p class=\"ds-markdown-paragraph\">Ta nabor podatkov, zbran na raziskovalnih kmetijah dr\u017eavne univerze Mississippi, vklju\u010duje 5 648 slik bomba\u017enih polj visoke lo\u010dljivosti, opremljenih z 9 370 omejitvenimi polji, ki dolo\u010dajo 12 pogostih vrst plevela. Omejitvena polja so pravokotni okvirji, narisani okoli zanimivih predmetov (npr. plevela) na slikah, ki zagotavljajo natan\u010dne lokacije za usposabljanje modelov umetne inteligence. Klju\u010dne zna\u010dilnosti vklju\u010dujejo:<\/p>\n<ul>\n<li class=\"ds-markdown-paragraph\"><strong>12 razredov plevela<\/strong>: vodna konoplja (najpogostej\u0161a), jutranjica, palmerjev amarant, pegast trpotec in druge.<\/li>\n<li class=\"ds-markdown-paragraph\"><strong>9.370 opomb o omejitvenem polju<\/strong>: Strokovno ozna\u010deni z uporabo programa VGG Image Annotator (VIA).<\/li>\n<li class=\"ds-markdown-paragraph\"><strong>Razli\u010dni pogoji<\/strong>: Slike, posnete pri razli\u010dni svetlobi (son\u010dno, obla\u010dno), v razli\u010dnih fazah rasti in v razli\u010dnih tleh<\/li>\n<\/ul>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"11531\" data-permalink=\"https:\/\/geopard.tech\/sl\/blog\/how-yolov8-based-multi-weed-detection-boosts-cotton-precision-agriculture\/cottonweeddet12-dataset\/\" data-orig-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/CottonWeedDet12-Dataset.jpg?fit=622%2C843&amp;ssl=1\" data-orig-size=\"622,843\" data-comments-opened=\"1\" data-image-title=\"CottonWeedDet12 Dataset\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/CottonWeedDet12-Dataset.jpg?fit=622%2C843&amp;ssl=1\" class=\"aligncenter wp-image-11531 size-full\" src=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/CottonWeedDet12-Dataset.jpg?resize=622%2C843&#038;ssl=1\" alt=\"CottonWeedDet12 Zbirka podatkov\" width=\"622\" height=\"843\" srcset=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/CottonWeedDet12-Dataset.jpg?w=622&amp;ssl=1 622w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/CottonWeedDet12-Dataset.jpg?resize=221%2C300&amp;ssl=1 221w\" sizes=\"(max-width: 622px) 100vw, 622px\" \/><\/p>\n<p class=\"ds-markdown-paragraph\">Pleveli segajo od vodne konoplje (najpogostej\u0161i plevel) do jitroceli\u010dne sla\u0161\u010dice, palmerskega amaranta in pegastega trpotca. Da bi zagotovili, da nabor podatkov odra\u017ea razmere v resni\u010dnem svetu, so bile slike posnete pri razli\u010dni svetlobi (son\u010dno, obla\u010dno) in v razli\u010dnih fazah rasti.<\/p>\n<p class=\"ds-markdown-paragraph\">Nekateri pleveli se na primer pojavijo kot majhne sadike, drugi pa so \u017ee popolnoma odrasli. Poleg tega zbirka podatkov vklju\u010duje razli\u010dna tla in razporeditev rastlin, kar posnema kompleksnost dejanskih bomba\u017enih polj.<\/p>\n<p class=\"ds-markdown-paragraph\">Pred usposabljanjem modela YOLOv8 so raziskovalci podatke predhodno obdelali, da bi izbolj\u0161ali njegovo robustnost. Predobdelava vklju\u010duje spreminjanje neobdelanih podatkov, da se izbolj\u0161a njihova primernost za usposabljanje umetne inteligence. Tehnike, kot je pove\u010devanje mozaika, ki zdru\u017euje \u0161tiri slike v eno, so pomagale simulirati goste populacije plevela.<\/p>\n<p class=\"ds-markdown-paragraph\">Druge metode, kot sta naklju\u010dno skaliranje in obra\u010danje, so model pripravile za obvladovanje sprememb v velikosti in usmerjenosti rastlin.<\/p>\n<ul>\n<li class=\"ds-markdown-paragraph\">Raz\u0161irjanje (\u00b150%), stri\u017eenje (\u00b130\u00b0) in obra\u010danje za posnemanje variabilnosti v realnem svetu.<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\">Tehnika vizualizacije, imenovana t-SNE (t-Distributed Stochastic Neighbor Embedding) - algoritem strojnega u\u010denja, ki zmanj\u0161uje dimenzije podatkov in ustvarja vizualne grozde - je razkrila lo\u010dene skupine za vsak razred plevela in potrdila primernost podatkovnega niza za usposabljanje modelov za prepoznavanje subtilnih razlik med vrstami.<\/p>\n<h2 class=\"ds-markdown-paragraph\">YOLOv8: Tehni\u010dne inovacije in arhitekturni napredek<\/h2>\n<p class=\"ds-markdown-paragraph\">YOLOv8 temelji na uspehu prej\u0161njih modelov YOLO z arhitekturnimi nadgradnjami, prilagojenimi za uporabo v kmetijstvu. Njegovo jedro je CSPDarknet53, hrbtenica nevronske mre\u017ee, zasnovana za pridobivanje hierarhi\u010dnih zna\u010dilnosti iz slik. Hrbtenica nevronskega omre\u017eja je glavna sestavina modela, ki je odgovorna za obdelavo vhodnih podatkov in pridobivanje ustreznih lastnosti.<\/p>\n<p class=\"ds-markdown-paragraph\">CSPDarknet53 uporablja povezave Cross Stage Partial (CSP) - zasnova, ki razdeli zemljevide funkcij omre\u017eja na dva dela, jih obdela lo\u010deno in pozneje zdru\u017ei - za izbolj\u0161anje gradientnega toka med usposabljanjem.<\/p>\n<p class=\"ds-markdown-paragraph\">Gradientni tok se nana\u0161a na to, kako u\u010dinkovito nevronska mre\u017ea posodablja svoje parametre, da bi zmanj\u0161ala napake, in kako u\u010dinkovito se model u\u010di. Arhitektura vklju\u010duje tudi piramidno omre\u017eje zna\u010dilnosti (Feature Pyramid Network - FPN) in omre\u017eje agregacije poti (Path Aggregation Network - PAN), ki sodelujeta pri odkrivanju plevela na ve\u010d ravneh.<\/p>\n<ul>\n<li class=\"ds-markdown-paragraph\"><strong>FPN<\/strong>: zaznava predmete v ve\u010d merilih (npr. majhne sadike in zreli plevel).<\/li>\n<li class=\"ds-markdown-paragraph\"><strong>PAN<\/strong>: Izbolj\u0161a natan\u010dnost lokalizacije z zdru\u017eevanjem funkcij v omre\u017enih plasteh.<\/li>\n<\/ul>\n<p>FPN je struktura, ki zdru\u017euje funkcije visoke lo\u010dljivosti (za zaznavanje majhnih predmetov) s semanti\u010dno bogatimi funkcijami (za prepoznavanje velikih predmetov), medtem ko PAN izbolj\u0161uje natan\u010dnost lokalizacije z zdru\u017eevanjem funkcij v omre\u017enih plasteh. FPN na primer prepozna majhne sadike, medtem ko PAN izbolj\u0161a lokalizacijo zrelega plevela.<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"11532\" data-permalink=\"https:\/\/geopard.tech\/sl\/blog\/how-yolov8-based-multi-weed-detection-boosts-cotton-precision-agriculture\/yolov8-technical-innovations-and-architectural-advancements\/\" data-orig-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/YOLOv8-Technical-Innovations-and-Architectural-Advancements.jpg?fit=800%2C426&amp;ssl=1\" data-orig-size=\"800,426\" data-comments-opened=\"1\" data-image-title=\"YOLOv8 Technical Innovations and Architectural Advancements\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/YOLOv8-Technical-Innovations-and-Architectural-Advancements.jpg?fit=800%2C426&amp;ssl=1\" class=\"aligncenter wp-image-11532 size-full\" src=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/YOLOv8-Technical-Innovations-and-Architectural-Advancements.jpg?resize=800%2C426&#038;ssl=1\" alt=\"YOLOv8 Tehni\u010dne inovacije in arhitekturni napredek\" width=\"800\" height=\"426\" srcset=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/YOLOv8-Technical-Innovations-and-Architectural-Advancements.jpg?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/YOLOv8-Technical-Innovations-and-Architectural-Advancements.jpg?resize=300%2C160&amp;ssl=1 300w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/YOLOv8-Technical-Innovations-and-Architectural-Advancements.jpg?resize=768%2C409&amp;ssl=1 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p class=\"ds-markdown-paragraph\">Za razliko od starej\u0161ih modelov, ki se zana\u0161ajo na vnaprej dolo\u010dena sidrna polja - vnaprej dolo\u010dene oblike omejitvenih polj, ki se uporabljajo za napovedovanje lokacij predmetov -, uporablja YOLOv8 glave za zaznavanje brez sider. Te glave neposredno napovedujejo sredi\u0161\u010da predmetov, s \u010dimer odpravljajo zapletene izra\u010dune in zmanj\u0161ujejo \u0161tevilo la\u017eno pozitivnih rezultatov.<\/p>\n<p class=\"ds-markdown-paragraph\">Ta inovacija ne pove\u010duje le natan\u010dnosti, temve\u010d tudi pospe\u0161uje obdelavo, saj YOLOv8 analizira sliko v samo 6,3 milisekunde s pomo\u010djo grafi\u010dnega procesorja NVIDIA T4 - visoko zmogljive grafi\u010dne procesne enote, optimizirane za naloge umetne inteligence.<\/p>\n<p class=\"ds-markdown-paragraph\">Funkcija izgube modela - matemati\u010dna formula, ki meri, kako dobro se napovedi modela ujemajo z dejanskimi podatki - zdru\u017euje izgubo CloU za natan\u010dnost omejitvenega polja, izgubo navzkri\u017ene entropije za klasifikacijo in izgubo \u017eari\u0161\u010da porazdelitve za obravnavo neuravnote\u017eenih podatkov. Izguba CloU (Complete Intersection over Union) izbolj\u0161a poravnavo omejitvenih polj z upo\u0161tevanjem obmo\u010dja prekrivanja, sredi\u0161\u010dne razdalje in razmerja med napovedanimi in dejanskimi polji.<\/p>\n<p class=\"ds-markdown-paragraph\" style=\"text-align: center;\"><strong>Matemati\u010dno<\/strong>, skupna izguba je: <span class=\"katex-display ds-markdown-math\"><span class=\"katex\"><span class=\"katex-mathml\">L(\u03b8)=7,5\u22c5Lbox+0,5\u22c5Lcls+0,375\u22c5Ldfl+Regularizacija<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">L<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">\u03b8<\/span><span class=\"mclose\">)<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">7.5<\/span><span class=\"mbin\">\u22c5<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">L<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\">\u0161katla<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\">0.5<\/span><span class=\"mbin\">\u22c5<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">L<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\">Cls<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\">0.375<\/span><span class=\"mbin\">\u22c5<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">L<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\">dfl<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord text\"><span class=\"mord\">Regularizacija<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\">Izguba navzkri\u017ene entropije ocenjuje natan\u010dnost klasifikacije s primerjavo napovedanih verjetnosti z resni\u010dnimi oznakami, medtem ko izguba \u017eari\u0161\u010da porazdelitve obravnava neuravnote\u017eenost razredov tako, da model bolj kaznuje za napa\u010dno razvrstitev redkih plevelov.<\/p>\n<p class=\"ds-markdown-paragraph\">V primerjavi s prej\u0161njimi razli\u010dicami YOLO je YOLOv8 bolj\u0161i od vseh. YOLOv4 je na primer dosegel srednjo povpre\u010dno natan\u010dnost (mAP) 95,22% pri prekrivanju 50% omejitvenega polja, YOLOv8 pa 96,10%. mAP je metrika, ki povpre\u010di rezultate natan\u010dnosti v vseh kategorijah, pri \u010demer vi\u0161je vrednosti pomenijo ve\u010djo natan\u010dnost zaznavanja.<\/p>\n<p class=\"ds-markdown-paragraph\">Podobno je mAP YOLOv8 pri ve\u010d pragovih prekrivanja (od 0,5 do 0,95) zna\u0161al 93,20% in je presegel 89,48% YOLOv4. Zaradi teh izbolj\u0161av je YOLOv8 najnatan\u010dnej\u0161i in naju\u010dinkovitej\u0161i model za odkrivanje plevela na bomba\u017enih poljih.<\/p>\n<h2 class=\"ds-markdown-paragraph\">Usposabljanje modela: Metodologija in rezultati<\/h2>\n<p class=\"ds-markdown-paragraph\">Za usposabljanje YOLOv8 so raziskovalci uporabili u\u010denje s prenosom - tehniko, pri kateri se predhodno usposobljen model (\u017ee usposobljen na velikem naboru podatkov) natan\u010dno prilagodi novim podatkom. Prenosno u\u010denje skraj\u0161a \u010das usposabljanja in izbolj\u0161a natan\u010dnost z uporabo znanja, pridobljenega pri prej\u0161njih nalogah.<\/p>\n<p class=\"ds-markdown-paragraph\">Model je obdeloval slike v serijah po 32, pri \u010demer je uporabljal optimizator AdamW - razli\u010dico optimizacijskega algoritma Adam, ki vklju\u010duje upadanje ute\u017ei za prepre\u010devanje pretiranega prilagajanja - s stopnjo u\u010denja 0,001.<\/p>\n<p class=\"ds-markdown-paragraph\">V 100 epohah (ciklih usposabljanja) se je model nau\u010dil izredno natan\u010dno razlikovati plevel od bomba\u017enih rastlin. Strategije za raz\u0161iritev podatkov, kot sta naklju\u010dno obra\u010danje slik in prilagajanje njihove svetlosti, so zagotovile, da se je model lahko spopadel s spremenljivostjo v resni\u010dnem svetu.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"11538\" data-permalink=\"https:\/\/geopard.tech\/sl\/blog\/how-yolov8-based-multi-weed-detection-boosts-cotton-precision-agriculture\/to-train-yolov8-researchers-used-transfer-learning-a-technique\/\" data-orig-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/To-train-YOLOv8-researchers-used-transfer-learning%E2%80%94a-technique.png?fit=1024%2C1300&amp;ssl=1\" data-orig-size=\"1024,1300\" data-comments-opened=\"1\" data-image-title=\"To train YOLOv8, researchers used transfer learning\u2014a technique\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/To-train-YOLOv8-researchers-used-transfer-learning%E2%80%94a-technique.png?fit=807%2C1024&amp;ssl=1\" class=\"aligncenter wp-image-11538 size-full\" src=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/To-train-YOLOv8-researchers-used-transfer-learning%E2%80%94a-technique.png?resize=810%2C1028&#038;ssl=1\" alt=\"Za usposabljanje YOLOv8 so raziskovalci uporabili u\u010denje s prenosom - tehniko\" width=\"810\" height=\"1028\" srcset=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/To-train-YOLOv8-researchers-used-transfer-learning%E2%80%94a-technique.png?w=1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/To-train-YOLOv8-researchers-used-transfer-learning%E2%80%94a-technique.png?resize=236%2C300&amp;ssl=1 236w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/To-train-YOLOv8-researchers-used-transfer-learning%E2%80%94a-technique.png?resize=807%2C1024&amp;ssl=1 807w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/04\/To-train-YOLOv8-researchers-used-transfer-learning%E2%80%94a-technique.png?resize=768%2C975&amp;ssl=1 768w\" sizes=\"(max-width: 810px) 100vw, 810px\" \/><\/p>\n<p class=\"ds-markdown-paragraph\">Rezultati so bili impresivni. V prvih 20 epohah je model dosegel natan\u010dnost ve\u010d kot 90%, kar ka\u017ee na hitro u\u010denje. Do konca usposabljanja je model YOLOv8 zaznal velik plevel z natan\u010dnostjo 94,40%.<\/p>\n<p class=\"ds-markdown-paragraph\">Manj\u0161i plevel pa se je izkazal za ve\u010dji izziv, saj se je natan\u010dnost zmanj\u0161ala na 11,90%. Ta razlika je posledica neuravnote\u017eenosti podatkovnega niza: veliki pleveli so bili preve\u010d zastopani, majhne sadike pa so bile redke. Kljub tej omejitvi je splo\u0161na uspe\u0161nost sistema YOLOv8 velik napredek.<\/p>\n<h2 class=\"ds-markdown-paragraph\">Izzivi in prihodnje usmeritve<\/h2>\n<p class=\"ds-markdown-paragraph\">\u010ceprav je YOLOv8 zelo obetaven, izzivi ostajajo. Odkrivanje majhnih plevelov je klju\u010dnega pomena za zgodnje ukrepanje, saj je sadike la\u017eje obvladovati.<\/p>\n<p class=\"ds-markdown-paragraph\">Raziskovalci predlagajo uporabo generativnih nasprotnih mre\u017e (GAN) - razreda modelov umetne inteligence, pri katerih dve nevronski mre\u017ei (generator in diskriminator) tekmujeta pri ustvarjanju realisti\u010dnih sinteti\u010dnih podatkov - za ustvarjanje umetnih slik majhnega plevela, s \u010dimer se nabor podatkov uravnovesi.<\/p>\n<p class=\"ds-markdown-paragraph\">Druga re\u0161itev vklju\u010duje vklju\u010ditev ve\u010dspektralnega slikanja, ki zajema podatke zunaj vidne svetlobe (npr. bli\u017enjo infrarde\u010do svetlobo) za izbolj\u0161anje kontrasta med pridelki in plevelom. Senzorji bli\u017enje infrarde\u010de svetlobe zaznajo vsebnost klorofila, zaradi \u010desar so rastline videti svetlej\u0161e in jih je la\u017eje lo\u010diti od tal.<\/p>\n<p class=\"ds-markdown-paragraph\">Prihodnje razli\u010dice programa YOLO, kot sta YOLOv9 in YOLOv10, bodo morda \u0161e izbolj\u0161ale natan\u010dnost. Ti modeli naj bi vklju\u010devali transformatorske plasti - vrsto arhitekture nevronske mre\u017ee, ki podatke obdeluje vzporedno in tako u\u010dinkoviteje kot tradicionalne CNN zajame odvisnosti dolgega dosega - ter dinami\u010dne piramide funkcij, ki se prilagajajo velikosti predmetov. Tak\u0161en napredek bi lahko pripomogel k zanesljivej\u0161emu odkrivanju majhnega plevela.<\/p>\n<p class=\"ds-markdown-paragraph\">Naslednji korak za kmete je testiranje na terenu. Avtonomni plevniki, opremljeni z YOLOv8 in kamerami, bi lahko krmarili po vrstah bomba\u017ea in mehansko odstranjevali plevel. Podobno bi lahko brezpilotni zrakoplovi s \u0161kropilnicami, ki jih poganja umetna inteligenca, natan\u010dno usmerjali herbicide in tako zmanj\u0161ali uporabo kemikalij do 90%.<\/p>\n<p class=\"ds-markdown-paragraph\">Te tehnologije ne zmanj\u0161ujejo le stro\u0161kov, temve\u010d tudi varujejo ekosisteme, kar je v skladu s cilji trajnostnega kmetijstva - kmetijske filozofije, ki daje prednost okoljskemu zdravju, gospodarski donosnosti in socialni pravi\u010dnosti.<\/p>\n<h2 class=\"ds-markdown-paragraph\">Zaklju\u010dek<\/h2>\n<p class=\"ds-markdown-paragraph\">Zaradi porasta plevelov, odpornih na herbicide, je kmetijstvo prisiljeno k inovacijam, YOLOv8 pa predstavlja preboj na podro\u010dju natan\u010dnega zatiranja plevelov. Z doseganjem 96,10% natan\u010dnosti pri odkrivanju v realnem \u010dasu ta model kmetom omogo\u010da, da zmanj\u0161ajo uporabo herbicidov, zni\u017eajo stro\u0161ke in za\u0161\u010ditijo okolje.<\/p>\n<p class=\"ds-markdown-paragraph\">\u010ceprav izzivi, kot je zaznavanje majhnega plevela, ostajajo, nenehni napredek na podro\u010dju umetne inteligence in senzorske tehnologije ponuja re\u0161itve. Z razvojem teh orodij se obeta, da se bo pridelava bomba\u017ea spremenila v bolj trajnostno in u\u010dinkovito prakso. V prihodnjih letih bi lahko vklju\u010ditev sistema YOLOv8 v avtonomne sisteme povzro\u010dila revolucijo v kmetijstvu.<\/p>\n<p class=\"ds-markdown-paragraph\">Kmetje se bodo pri obvladovanju plevela lahko zana\u0161ali na pametne robote in brezpilotna letala, s \u010dimer bodo sprostili \u010das in vire za druge naloge. Ta premik k podatkovno usmerjenemu kmetovanju ne zagotavlja le pridelka, temve\u010d tudi bolj zdrav planet za prihodnje generacije. Z uporabo tehnologij, kot je YOLOv8, lahko kmetijska industrija premaga izzive odpornosti na herbicide in utira pot bolj zeleni in produktivni prihodnosti.<\/p>\n<p><strong>Referenca<\/strong>: Khan, A. T., Jensen, S. M., &amp; Khan, A. R. (2025). Advancing precision agriculture (Napredek v preciznem kmetijstvu): A comparative analysis of YOLOv8 for multi-class weed detection in cotton cultivation (Primerjalna analiza programa YOLOv8 za ve\u010drazredno odkrivanje plevela pri gojenju bomba\u017ea). Umetna inteligenca v kmetijstvu, 15, 182-191. <a href=\"https:\/\/doi.org\/10.1016\/j.aiia.2025.01.013\" rel=\"nofollow\">https:\/\/doi.org\/10.1016\/j.aiia.2025.01.013<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Gojenje bomba\u017ea je klju\u010dni del kmetijstva v Zdru\u017eenih dr\u017eavah Amerike in pomembno prispeva k gospodarstvu. Samo leta 2021 so kmetje pobrali ve\u010d kot 10 milijonov ...<\/p>","protected":false},"author":210157960,"featured_media":11530,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_eb_attr":"","content-type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"{title}\n\n{excerpt}\n\n{url}","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[1657,1658],"tags":[],"class_list":["post-11525","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-precision-farming","category-weed-control"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - 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