Indlela yokukhetha izithombe ze-SPOT kusuka ku-Google Earth

Ngithemba ukuthi amaCartesian ayengabaxolisa ngokushicilela okuthunyelwe okusobala, ngoba lokhu ku-Readme of Google Earth, hehe

Kodwa-ke, ekuphenduleni isicelo engisibone ezinsukwini ezimbalwa ezedlule kwizibalo; lapha okuthunyelwe. Ini esikhulume ngaphambili, ngaphakathi kokubi kwe-Google Earth kuyoba ikhathalogu yemikhiqizo evela kubahlinzeki bezithombe ze-satellite, phakathi kwabanye izithombe ezisezingeni eliphezulu ezithathwe yi-satellite okuthiwa i-SPOT, ngokudlula isifinyezo sesiFulentshi I-Satellite Pour l'Observation de la Terre ukuthi kusukela ku-SPOT5 eqaliswe ku-2002 izithombe eziningi ze-2.5 amamitha atholakala.

I-1. Vula ukukhishwa kwe-SPOT

Ukuze uvule isendlalelo sesithombe sesathelayithi se-SPOT, kwenziwa kuphaneli yesokunxele ekhonjiswe emfanekisweni, ngale ndlela izithombe ezikhona zibonakala emigqeni ewolintshi. Kufanele uhlehlise isithombe kancane ukuze uzibone, futhi ezithonjaneni eziphakathi nendawo kumakhava uthola isixhumanisi sokubuka kuqala isithombe kanye nenkinobho yokusithenga.

I-2. Imininingwane yezithombe ze-SPOT

Emininingwaneni yesithombe, ulwazi luvela njengo:

I-Satellite: SPOT 5 (I-Satellite eyenza udutshulwa)

Idethi: 23 DEC, 2007 18: 30: 56 UTC (Usuku lokuthatha, i-United Time Central, okungukuthi isikhathi se-United States Center)

Umkhiqizo: umbala we-2.5 m (Usayizi wePixel futhi uma isithombe sinobuciko noma isisindo se-grayscale)

I-incidence angle: -5.03957 ° (i-angle of Capture maqondana ne-veter engaya enkabeni yomhlaba ... ngicabanga)

I-ID: 55442840712231830562J (Isihlungi sesithombe)

Qaphela: Imifino ibonakala ibomvu emifanekisweni yembala eluhlaza. (Lokhu kusho ukuthi umbala uhambisana nokuchazwa kokukhanya yi-satellite, hhayi ukuthi amahlathi ashisa umlilo :))

I-Spot Image ingumhlinzeki oholayo wolwazi lwezwe olusuka kumfanekiso wesathelayithi wokusetshenziswa kochwepheshe nokuzimela.

I-"One World, One Year" ikhombisa izithombe zakamuva ze-SPOT ezitholwe ezinyangeni eziyi-12 ezedlule. Kuwukukhethwa kwezithombe ezisukela ku-2.50 metres kuya ku-20 metres ukulungiswa.

Lokhu kusho ukuthi izithombe eziboniswe kukhathalogi yakwaGoogle Earth akuzona zodwa ezikhona, kodwa yizo ezifunwa kakhulu ... futhi ukuthi akuzona zonke ezinesinqumo samamitha ayi-2.50 kodwa ziyahlukahluka kufinyelela kumamitha angama-20 ngephikseli ngayinye.

Lezi zincwadi azisebenzisi ngemisebenzi ephezulu kakhulu, ngaphambi kokuba i-pixel eyodwa ihambe ngamamitha angu-20, manje ihamba nge-2.50 noma ngaphansi (GeoEye uthembisa izoba no-0.25) kepha inkinga ukuthi ngenxa yokuthola ukumbozwa okubanzi okunje, ukuqothuka komhlaba kunesigameko ngakho-ke ukunemba kwephuzu elithile ngokuqondene nenye eseduze (cishe amamitha ayi-100) kusebenza kahle ... kepha maqondana nesikude (cishe i-2000 ngokwesibonelo) ... azikho iziqinisekiso ... futhi yilokho okuxazululwa nge-orthorecifying futhi umehluko utholakala lapho uqhathanisa isithombe esibekelwe indiza kumamitha ayi-5,000 ukuphakama, ngamaphoyinti anele lawula ... esithombeni se-satellite esithathwe endaweni ephakeme ngamakhilomitha angama-822.

Kodwa-ke, lezi zithombe ziwusizo kakhulu kumaphrojekthi amahlathi, ukunciphisa ubungozi, imvelo, umlando, njll. Inzuzo abanayo ukuthi bayizithombe ze-satellite, okungukuthi, imiphumela yokuchazwa kwesathelayithi esekelwe ekukhanyeni kokukhanya namanye amakhambi anjalo ayinkimbinkimbi ... akuzona izithombe zasemoyeni, kodwa izinhlelo eziningi zinezinhlelo zokusebenza ezivumela okukhethekile. Ukuhlaziya okuzokwenziwa Lolu hlobo lwesithombe lungatholwa ngedatha yokuphakama komhlaba (DEM).

I-3. Ukuxhumanisa izithombe ze-SPOT

Ukuze wazi ukuhlanganisa okumaphakathi kwalezi zithombe, khetha inketho “uthole isithombe“, bese kuvela iphaneli lapho kunolwazi olwengeziwe olufana nobubanzi nobude bendawo emaphakathi yesithombe, iphesenti lekhava yamafu, inani kanye nenkinobho ukuze uthole ukucaphuna okusemthethweni.

Isibonelo engikubonise sona sibiza u-€8,100, kodwa uma ufuna ukubona okunye ukufakwa ungaya ku- “buka amanzi amaningi e-intanethi” futhi ngokuqinisekile uzothola izithombe ezinenani eliphansi nakuba kungezona ezakamuva. Umbandela "wakamuva" kufanelekile ukusho, wehlisa izindleko futhi kwezinye izimo isithombe seminyaka embalwa edlule singaba wusizo ngokulinganayo kuye ngezinjongo noma ukungazi :).

I-4. Izithombe zezindawo ezithile

Uma ufaka iphaneli lokukhetha ongakhetha noma:

• Izixhumanisi zendawo
• Khetha ngesifunda, izwe, umnyango, umasipala
• Khetha usayizi we-pixel, kusuka ku-2.5 kuya kumamitha angu-20, noma ukuthunjwa noma ukuxazululwa, noma i-3D ngemininingwane yokuphakamisa imodeli ye-digital (DEM)
• Idethi yesithombe
• Ukuphakama okukhulu
• I-angle enkulu yezehlakalo

Uma ngabe imingcele ikhethiwe, uhlelo lukukhombisa izinketho ezikhona nezintengo.