TY - CHAP AU - Virág, Martin AU - Molják, Sándor AU - Sütő, László ED - Blanka, Viktória TI - A természetjárás hatásai a Cserhát turistaútjain = The impacts of hiking on the Cserhát tourist routes T2 - XVIII. Kárpát-medencei Környezettudományi konferencia = XVIII. Carpathian Basin Environmental Science Conference PB - Sapientia Erdélyi Magyar Tudományegyetem CY - Szeged SN - 9789633069370 T3 - Kárpát-Medencei Környezettudományi Konferencia, ISSN 1842-9815 PY - 2023 SP - 86/2 EP - 87/1 UR - https://m2.mtmt.hu/api/publication/34161083 ID - 34161083 LA - English DB - MTMT ER - TY - CHAP AU - Sütő, László AU - Hegyi, Balázs AU - Molják, Sándor AU - Szepesi, János ED - Abriha-Molnár, Vanda Éva TI - Antropogén felszínformálás terepi lézerszkenneres mérése telkibányai horpák példáján T2 - Az elmélet és a gyakorlat találkozása a térinformatikában XII.: Theory meets practice in GIS PB - Debreceni Egyetemi Kiadó CY - Debrecen SN - 9789633189771 PY - 2021 SP - 291 EP - 293 PG - 3 UR - https://m2.mtmt.hu/api/publication/32492238 ID - 32492238 LA - Hungarian DB - MTMT ER - TY - CONF AU - Molják, Sándor AU - Magyar, Balázs AU - Dr Piskóti-Kovács, Zsuzsa ED - Varga-Pallagi, Barbara ED - Tuza-Matyus, Judit ED - Ruszkai, Csaba TI - Aktív távérzékelési tapasztalatok SLAM technológia alkalmazásával = Active Remote Sensing Experience Using Slam Technology T2 - Szőlészeti környezetkutatás az észak-magyarországi régióban PY - 2020 SP - 24 EP - 26 PG - 3 DO - 10.17048/SzoleszetiKornyKutAbsKFK.2020.24 UR - https://m2.mtmt.hu/api/publication/31928866 ID - 31928866 LA - English DB - MTMT ER - TY - CONF AU - Nagy, Richárd AU - Magyar, Balázs AU - Hegyi, Balázs AU - Molják, Sándor ED - Varga-Pallagi, Barbara ED - Tuza-Matyus, Judit ED - Ruszkai, Csaba TI - Multispektrális térképezés 2D és 3D-s mezőgazdasági területeken = Multispectral Mapping In 2 And 3 Dimensional Agricultural Areas T2 - Szőlészeti környezetkutatás az észak-magyarországi régióban PY - 2020 SP - 23 EP - 23 PG - 1 DO - 10.17048/SzoleszetiKornyKutAbsKFK.2020.23 UR - https://m2.mtmt.hu/api/publication/31928864 ID - 31928864 LA - English DB - MTMT ER - TY - JOUR AU - Láposi, Réka AU - Bekő, László AU - Kaprinyák, Tünde AU - Molják, Sándor AU - Tóth, Szilárd TI - Evaluation of soil bacteria treatments on some physiological parameters of crops by spectral vegetation indices JF - ECOCYCLES J2 - ECOCYCLES VL - 6 PY - 2020 IS - 1 SP - 134 EP - 145 PG - 12 SN - 2416-2140 DO - 10.19040/ecocycles.v6i1.167 UR - https://m2.mtmt.hu/api/publication/31611474 ID - 31611474 LA - English DB - MTMT ER - TY - JOUR AU - Pap, Melinda AU - Király, Sándor AU - Molják, Sándor TI - Analysing the vegetation of energy plants by processing UAV images JF - ANNALES MATHEMATICAE ET INFORMATICAE J2 - ANN MATH INFORM VL - 52 PY - 2020 SP - 183 EP - 197 PG - 15 SN - 1787-5021 DO - 10.33039/ami.2020.01.001 UR - https://m2.mtmt.hu/api/publication/31170442 ID - 31170442 AB - Bioenergy plants are widely used as a form of renewable energy. It is important to monitor the vegetation and accurately estimate the yield before harvest in order to maximize the profit and reduce the costs of production. The automatic tracking of plant development by traditional methods is quite difficult and labor intensive. Nowadays, the application of Unmanned Aerial Vehicles (UAV) became more and more popular in precision agriculture. De-tailed, precise, three-dimensional (3D) representations of energy forestry are required as a prior condition for an accurate assessment of crop growth. Using a small UAV equipped with a multispectral camera, we collected imagery of 1051 pictures of a study area in Kompolt, Hungary, then the Pix4D software was used to create a 3D model of the forest canopy. Remotely sensed data was processed with the aid of Pix4Dmapper to create the orthophotos and the digital surface model. The calculated Normalized Difference Vegetation Index (NDVI) values were also calculated. The aim of this case study was to do the first step towards yield estimation, and segment the created or-thophoto, based on tree species. This is required, since different type of trees have different characteristics, thus, their yield calculations may differ. How-ever, the trees in the study area are versatile, there are also hybrids of the same species present. This paper presents the results of several segmentation algorithms, such as those that the widely used eCognition provides and other Matlab implementations of segmentation algorithms. © 2020, Eszterhazy Karoly College. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Utasi, Zoltán AU - Hegyi, Balázs AU - Molják, Sándor AU - Ruszkai, Csaba TI - Integrated cadastral and technical databases JF - GEOGRAPHIA NAPOCENSIS J2 - GEOGRAPHIA NAPOCENSIS VL - 2/2019 PY - 2019 SP - 33 EP - 39 PG - 7 SN - 1843-5920 UR - https://m2.mtmt.hu/api/publication/31322881 ID - 31322881 LA - English DB - MTMT ER - TY - CONF AU - Pap, Melinda AU - Király, Sándor AU - Molják, Sándor ED - Remondino, F. ED - Shortis, M. TI - Investigating the usability of UAV obtained multispectral imagery in tree species segmentation T2 - The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences PY - 2019 SP - 159 EP - 165 PG - 7 DO - 10.5194/isprs-archives-XLII-2-W18-159-2019 UR - https://m2.mtmt.hu/api/publication/30948003 ID - 30948003 AB - A widely used form of renewable energy are bioenergy crops. One form of it is the energy forestry that includes short rotation coppice plantations in which fast growing species of tree or woody shrub are grown (e.g. poplar, willow). The accurate prediction of forest biomass and volume can be used for the evaluation of plant breeding efficiency as well. The automatic tracking of plant development by traditional methods is quite difficult and labor intensive. Since energy forestries often contain different trees for estimating their volume it is essential to find segments containing the same tree species in the image. We investigated the applicability of a low cost UAV and an intermediate cost UAV in the field of agricultural image segmentation that is the first stage of biomass estimation (Gatziolis et al., 2015, Gaulton et al., 2015). This paper is a case study that shows the results of several segmentation algorithms applied on imagery obtained by a low cost UAV with low-cost camera, and imagery gathered by a UAV and camera set that are of higher quality and price. In the case study, we have observed two small forestry areas that contained six different tree species and their hybrids. Our results show that more expensive, better-equipped drone shots do not necessary provide significantly better segmentation. LA - English DB - MTMT ER - TY - CHAP AU - Utasi, Zoltán AU - Lavaj, Marcell AU - Nagy, Ádám AU - Tóth, László AU - Molják, Sándor AU - Sütő, László ED - Abriha-Molnár, Vanda Éva TI - Turistautak geoinformatikai feldolgozása az Egri Borrégió területén T2 - Az elmélet és a gyakorlat találkozása a térinformatikában X.: Theory meets practice in GIS PB - Debreceni Egyetemi Kiadó CY - Debrecen SN - 9789633180549 PY - 2019 SP - 333 EP - 340 PG - 8 UR - https://m2.mtmt.hu/api/publication/30833857 ID - 30833857 LA - Hungarian DB - MTMT ER - TY - CONF AU - Nagy, Richárd AU - Hegyi, Balázs AU - Molják, Sándor AU - Lakatos, László AU - Bozó, Ádám AU - Zsófi, Zsolt ED - Puskás, János TI - Nagy felbontású térinformatikai alapú szőlőtermőhelyi kataszterezés lehetősége és validálása az Egri borvidéken T2 - 10. Szőlő és Klíma Konferencia C1 - Kőszeg PY - 2018 SP - 10 EP - 10 PG - 1 UR - https://m2.mtmt.hu/api/publication/30827675 ID - 30827675 LA - Hungarian DB - MTMT ER -