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Uzaktan Alglama (2)r. Gr. Dr. zgr ZEYDAN

http://cevre.beun.edu.tr/zeydan/

Uzaktan Alglama Verisi

0

127

255

Brightness value range

(typically 8 bit)Associated gray-scale

10 15 17 20

15 16 18 21

17 1820

2218

2022 24

12

34

1 5432Columns ( j)

Bands (k )

1

2

3

4

X axis Picture element (pixel) at location Line 4, Column 4, in Band 1 has a Brightness Value of 24, i.e., BV4,4,1 = 24 .

black

gray

white21

23

2225

Lines or rows (i)

0

127

255

Brightness value range

(typically 8 bit)Associated gray-scale

10 15 17 20

15 16 18 21

17 1820

2218

2022 24

12

34

1 5432Columns ( j)

Bands (k )

1

2

3

4

X axis Picture element (pixel) at location Line 4, Column 4, in Band 1 has a Brightness Value of 24, i.e., BV4,4,1 = 24 .

black

gray

white21

23

2225

Lines or rows (i)

Raster Veri Format

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Uzaktan Alglama Verisi

http://www.tankonyvtar.hu/hu/tartalom/tamop425/0027_DAI6/ch01s03.html

Uzaktan Alglama Verilerinde znrlk

1. Mekansal (Spatial) znrlk Objelerin ayrt edilebilirlii

2. Spektral (Spectral) znrlk Spektral bant says

3. Radyometrik (Radiometric) znrlk Verinin parlaklk deerindeki ayrnt

4. Zamansal (Temporal) znrlk Verinin ka gnde bir topland

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Mekansal znrlk

http://www.satimagingcorp.com/services/resources/characterization-of-satellite-remote-sensing-systems/

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http://www.satimagingcorp.com/services/resources/characterization-of-satellite-remote-sensing-systems/

Uydular ve Mekansal znrlkleri

http://ej.iop.org/images/1742-2140/9/4/S40/Full/jge422698f3_online.jpg

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NAIP aerial imagery in its native 1m format (left) compared to a 10m (middle) and 30m (right) version of the same data. While visual differences are easy to see, the file sizes also change from 2.5MB to 39kB to 23kB.

http://coast.noaa.gov/geozone/you-say-you-want-high-resolution/#.VH3LvnvIDhA

1 m znrlk 2 m znrlk 5 m znrlk

10 m znrlk 20 m znrlk 30 m znrlk

http://www.jmu.edu/cisr/research/sic/rs/resolution.htm

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Spektral znrlk Sensrn farkl dalga

boylarnda grnt alabilme yeteneidir.

Spektral znrln yksek olmas, belirli bir banttaki dalga boyunun daha dar olarak grntlenmesi ile ilikilidir. http://www.nrcan.gc.ca/earth-sciences/geomatics/satellite-imagery-air-

photos/satellite-imagery-products/educational-resources/9393

Spektral znrlk

http://www.seos-project.eu/modules/remotesensing/remotesensing-c03-p03.html

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Spektral znrlk Yksek: ~ 220 bant Orta: 3 - 15 bant Dk: ~ 3 bant

Landsat = 7 bant

Landsat 7 Bantlar

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Bant Kombinasyonlar

Radyometrik znrlk EMRdeki enerji

farkllklarn ortaya karabilmenin lsdr.

Yksek radyometrik znrlkte EMRdeki enerji deiimleri daha iyi alglanr.

http://www.nrcan.gc.ca/earth-sciences/geomatics/satellite-imagery-air-photos/satellite-imagery-products/educational-resources/9379

2-bit 8-bit

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Radyometrik znrlk 1-bit (21): 0 1 4-bit (24): 0 15 8-bit (28): 0 225

http://www.fis.uni-bonn.de/en/recherchetools/infobox/professionals/resolution/ radiometric-resolution

Landsat: 28, 0 - 255

Radyometrik znrlk

http://commons.wikimedia.org/wiki/File:Decreasing_radiometric_resolution_from_L7_15m_panchromatic.svg

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Zamansal znrlk Sensrn ayn blgeden ka gnde bir

grnt aldnn lsdr.

Daha sk grnt alnmas yksek zamansal znrln gstergesidir.

Zamansal znrlk

Time

July 1 July 12 July 23 August 3

11 days

16 days

July 2 July 18 August 3

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Zamansal znrlk Yksek : < 24 saat - 3 gn Orta : 4 - 16 gn Dk: > 16 gn

Landsat = 16 gn

TBTAK UZAYUzay Teknolojileri Aratrma Enstits

Yer Gzlem Uydular: Bilsat Rasat Gktrk-2

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RASAT Aratrma Uydusu

http://uzay.tubitak.gov.tr/tr/uydu-uzay/rasat

RASAT Aratrma Uydusu

http://uzay.tubitak.gov.tr/tr/uydu-uzay/rasat

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Gezgin Portalhttps://www.gezgin.gov.tr/

Dosya indirmek iin kurumsal yelik gerekmektedir!

Landsat 7

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Landsat TM Bant zellikleri ve Kullanm Alanlar

Bant Kullanm1 Bitki ve toprak arasndaki farkllklar, ormanlk alanlar ve ky

izgisinin haritalanmas2 Canl bitkilerin yeil blmleri3 Farkl bitki trlerinin tespiti, litoloji ve toprak arasndaki snrn

saptanmasnda4 Bitkilerin miktarn saptamada, litolojilerin tanmlanmasnda,

toprak/litoloji ve kara/su arasndaki kontrastl gsterir5 Kurak alanlar, su miktar, kar ve buz arasndaki farkn bulunmasnda6 Scaklk miktar, bitkiler, termal kirliliin ve jeotermal alanlarn

belirlenmesinde7 Litoloji ve toprak arasndaki snrn belirlenmesinde, toprak ve

bitkilerdeki su miktarnn saptanmasnda

http://www.mta.gov.tr/v2.0/birimler/RSC_WEB/index.php?id=ua

Landsat TM Bant zelliklerine Gre Endeksler

Endeksler lemler Bitki indeksi B4-B3Normalize Fark Bitki ndeksi (NDVI) (B4-B3) / (B4+B3) Demir Oksit B3/B1 Kil Mineralleri B5/B7 Demirli Mineraller B5/B4 Mineral Kompozisyonu B5/B7 , B5/B4 , B3/B1 Hidrotermal Kompozisyon B5/B7 , B3/B1 , B4/B3

http://www.mta.gov.tr/v2.0/birimler/RSC_WEB/index.php?id=ua

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GeoEye-1

IKONOS

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QuickBird

SPOT

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Uydular Hakknda Daha Detayl Bilgi in Web Kaynaklar:

http://www.nik.com.tr/content_sistem_uydu_goruntuleri.asp

http://www.satimagingcorp.com/satellite-sensors/

http://www.esa.int/SPECIALS/Eduspace_EN/SEM7YN6SXIG_0.html