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Akụkọ ịga nke ọma nke foto oblique

Ihe ịga nke ọma nke foto oblique

——Jiri ihe atụ 3D mee nyocha cadastral maka mpaghara ndị dị elu

1. Nchịkọta

Mgbe ọtụtụ afọ nke mmepe gasịrị, ugbu a na China, a na-eji foto oblique eme ihe n'ọtụtụ ebe na ọrụ nyocha cadastral ime obodo. Otú ọ dị, n'ihi mmachi nke akụrụngwa teknụzụ ọnọdụ , oblique foto ka na-adịghị ike maka cadastral nha nke nnukwu-dobe Mpaghara, tumadi n'ihi na focal ogologo na picture format nke oblique igwefoto oghere adịghị ruo ọkọlọtọ. Mgbe ọtụtụ afọ nke ahụmahụ oru ngo, anyị chọpụtara na map ziri ezi kwesịrị ịbụ n'ime 5 cm, mgbe GSD ga-adị n'ime 2 cm, na 3D nlereanya ga-adị nnọọ mma, n'ọnụ nke ụlọ ga-adị ogologo na doro anya.

 

Na mkpokọta, ogologo oghere igwefoto ejiri maka ọrụ nha cadastral ime obodo bụ 25mm na vetikal yana 35mm oblique. Iji nweta izi ezi nke 1:500, GSD ga-adị n'ime 2 cm. Na iji hụ na, elu elu nke drones bụ n'ozuzu n'etiti 70m-100m. Dị ka elu ụgbọ elu a si dị, ọ dịghị ụzọ ọ bụla iji mezue nchịkọta data nke ụlọ elu 100m dị elu. Ọbụna ma ọ bụrụ na ị na-ebu ụgbọ elu , ọ pụghị ikwe nkwa nkwụsị nke elu ụlọ, na-akpata adịghị mma nke ihe nlereanya ahụ. .Ma n'ihi na agha elu dị oke ala, ọ dị oke egwu maka UAV.

Iji dozie nsogbu a, na Mee 2019, anyị mere nnwale nkwenye ziri ezi nke Oblique Photography maka ụlọ elu mepere emepe. Ebumnuche nke ule a bụ iji nyochaa ma nhazi nke ikpeazụ nke ụdị 3D nke igwefoto oblique RIY-DG4pros wuru nwere ike mezuo ihe achọrọ 5 cm RMSE.

2. Usoro nyocha

Akụrụngwa

N'ime ule a, anyị na-ahọrọ DJI M600PRO, nke nwere igwefoto Rainpoo RIY-DG4pros oblique nwere oghere ise.

Mpaghara nyocha na nhazi ebe njikwa

Na nzaghachi nye nsogbu ndị a dị n'elu, yana iji mee ka ihe isi ike dịkwuo elu, anyị ahọrọla sel abụọ nke nwere nkezi ụlọ elu 100 mita maka ule.

Edobere ebe njikwa dịka maapụ GOOGLE siri dị, yana gburugburu ya kwesịrị imeghe na enweghị mgbochi dịka enwere ike. Ebe dị n'etiti isi ihe dị na nso nke 150-200M.

Ebe nchịkwa bụ 80 * 80 square, kewara na-acha uhie uhie na odo dị ka diagonal, ka e wee hụ na a pụrụ ịmata nke ọma n'etiti ebe echiche ahụ dị oke ike ma ọ bụ ọkụ na-ezughị ezu, iji meziwanye ihe ziri ezi.

Atụmatụ okporo ụzọ UAV

Iji hụ na nchekwa nke ọrụ, anyị debere ebe nchekwa dị elu nke mita 60, UAV na-efekwa na mita 160. Iji hụ na nkpuchi nke elu ụlọ, anyị na-abawanye ọnụ ọgụgụ ndakọrịta. Ọnụego nchikota ogologo ogologo bụ 85% yana ọnụego nfefe gafere bụ 80%, UAV na-efekwa na ọsọ 9.8m/s.

Aerial Triangulation (AT) akụkọ

Jiri sọftụwia “Sky-Scanner” (nke Rainpoo mebere) ka ibudata na hazie foto izizi, wee bubata ha na ngwa nlegharị anya ContextCapture 3D site na otu igodo.

  • 15h.

    N'oge:15h.

     

  • 23h.

    Nlereanya 3D

    oge: 23h.

Akuko mgbagha lens

Site na eserese grid distortion, enwere ike ịhụ na mgbagha oghere nke RIY-DG4pros dị obere, na gburugburu ya fọrọ nke nta ka ọ dakọtara na square ọkọlọtọ;

Njehie mmeju nke RMS

N'ihi teknụzụ ngwa anya nke Rainpoo, anyị nwere ike ijikwa uru RMS n'ime 0.55, nke bụ ihe dị mkpa maka izi ezi nke ụdị 3D.

Mmekọrịta nke oghere ise

Enwere ike ịhụ na ebe dị anya n'etiti isi ihe nke oghere oghere etiti etiti na isi ihe nke anya anya oblique bụ: 1.63cm, 4.02cm, 4.68cm, 7.99cm, na-ewepụ ihe dị iche n'ọnọdụ ọnọdụ, ụkpụrụ njehie bụ: - 4.37cm, -1.98cm, -1.32cm, 1.99cm, kacha dị iche nke ọnọdụ bụ 4.37cm, igwefoto mmekọrịta nwere ike ịchịkwa n'ime 5ms;

Kpeta mperi

RMS nke amụma amụma na akara njikwa sitere na 0.12 ruo 0.47 pikselụ.

3. Nlereanya 3D

Ngosipụta ihe nlereanya
Ihe ngosi zuru oke

Anyị nwere ike ịhụ nke ahụ n'ihi na RIY-DG4pros na-eji ogologo anya anya anya anya, ụlọ dị na ala nke ụdị 3d doro anya ịhụ. Opekempe oge mkpughe nke igwefoto nwere ike iru 0.6s, yabụ ọ bụrụgodi na ọnụọgụ nfe ogologo ogologo na-abawanye ruo 85%, enweghị mwepu foto ọ bụla.
Ụkwụ ụkwụ nke ụlọ elu dị elu doro anya ma kwụ ọtọ, nke na-ahụkwa na anyị nwere ike nweta akara ụkwụ ziri ezi na ihe nlereanya mgbe e mesịrị.

4. Nyocha nke ziri ezi

  • Anyị na-eji ọdụ ọdụ zuru ezu ịnakọta data ọnọdụ nke ebe nlele wee bubata faịlụ DAT na CAD. Mgbe ahụ ozugbo tụnyere ihe ọnọdụ data na ihe nlereanya ịhụ ọdịiche ha.
  • Anyị na-eji ọdụ ọdụ zuru ezu ịnakọta data ọnọdụ nke ebe nlele wee bubata faịlụ DAT na CAD. Mgbe ahụ ozugbo tụnyere ihe ọnọdụ data na ihe nlereanya ịhụ ọdịiche ha.

5. Nkwubi okwu

N'ime ule a, ihe isi ike bụ na elu na obere nkwụsị nke ebe ahụ, nnukwu njupụta nke ụlọ na ala dị mgbagwoju anya. Ihe ndị a ga-eduga n'ịbawanye ihe isi ike nke ụgbọ elu , ihe ize ndụ dị elu, na ụdị 3D dị njọ , nke ga-eduga n'ibelata nke ziri ezi na nyocha cadastral.

N'ihi na RIY-DG4pros focal ogologo bụ ogologo karịa nkịtị oblique ese foto, ọ na-ahụ na anyị UAV nwere ike ofufe na a mma zuru oke elu, na image mkpebi nke ala ihe dị n'ime 2 cm. N'otu oge ahụ, oghere oghere zuru oke nwere ike inyere anyị aka ijide akụkụ ndị ọzọ nke ụlọ mgbe ị na-efe efe na mpaghara ụlọ dị elu, si otú a na-eme ka àgwà nke 3D dị mma. N'okpuru ebe a na-ekwe nkwa ngwaọrụ ngwaike niile, anyị na-emeziwanye ndakọrịta nke ụgbọ elu yana njupụta nkesa nke njikwa iji hụ na izi ezi nke ụdị 3D.

foto oblique maka ebe dị elu nke nyocha cadastral, otu oge n'ihi njedebe nke akụrụngwa na enweghị ahụmahụ, enwere ike ịlele ya site na usoro omenala. Mana mmetụta nke ụlọ ndị dị elu na akara RTK na-ebutekwa ihe isi ike na adịghị mma nke nha. Ọ bụrụ na anyị nwere ike iji UAV na-anakọta data, mmetụta nke akara satịlaịtị nwere ike iwepụ kpamkpam, yana n'ozuzu nha nha nwere ike ime ka ọ dịkwuo mma. Yabụ na ịga nke ọma nke ule a baara anyị nnukwu uru.

Nnwale a na-egosi na RIY-DG4pros nwere ike ijikwa RMS na obere uru bara uru, nwee ezigbo ihe ngosi 3D, yana enwere ike iji ya rụọ ọrụ nha nke ọma nke ụlọ dị elu.