komparasi format gambar dan level keabuan?

 ukuran berkas 1.105 KB atau 1.105.000 Byte dengan ekstensi jpeg dan dimensi 7711 x 7511

di save as 16 color bitmap dengan ukuran 28.284 KB dengan ekstensi bmp dan dimensi yang sama

di save as monochrom dengan ukuran 7.701 KB dengan ekstensi bmp dan dimensi yang sama

Ukuran menjadi lebih besar dikarenakan adanya perubahan format berkas gambar dari jpg menjadi bmp. Sedangkan untuk kualitas gambar jadi berkurang menjadi monochrome dan 16 color.

Greness on Landsat 8 Lombok and Bali region

this greenness extraction can we achieve by calculate each band of landsat with the formula (-0.3344*b2) - (0.3544*b3) - (0.4556*b4) + (0.6966 *b5) - (0.0242*b6) - (0.2630*b7) (try this formula from

Earth and Planetary Sciences » Oceanography and Atmospheric Sciences » "Climate Change - Research and Technology for Adaptation and Mitigation", book edited by Juan Blanco and Houshang Kheradmand, ISBN 978-953-307-621-8, Published: September 6, 2011 under CC BY-NC-SA 3.0 license 

in page 124-125) Of course the parameter which is given is related to author's region (The geographical area of interest is the Kura River basin in Saylan district of Azerbaijan). 

The original image with  color combination 654

Landsat 8 combination

Here are the examples of combination from landsat

True Color Combination (432) as you can see this combination almost same with Landsat 7 (321)

 

Next combination is (652) which is similar to 541 but off course with bit differences 

 

And there also combination with 564 

 

Correct me if I'm Wrong please 

LDCM

Informasi lebih lengkap di LDCM website

Landsat 8 path 122 row 65

Year 2013 Julian Day 141

Receiver Station = (LGN) Landsat ground Station
Band 1

Band 2

Band 3

Band 4

Band 5

Band 6

Band 7

Band 8

Band 9

Band 10

Band 11

inc_cc_30mLC81220652013141LGN01_B1_11

All bands have been resampled its pixel resolution become 30 m with cubic convolution

method, as you can see the 8th band is pancrhomatic band with 15m resolution.  After the 8th band being resampled into 30m.

Dims: Full Scene (55,285,071 points)

Basic Stats           Min                    Max                         Mean                Stdev            Num                      Eigenvalue

     Band 1              0                   58078                 11340.471733       9849.301677           1                   697285341.611760

     Band 2              0                   61131                 10852.528282       9831.498355           2                   182472125.518507

     Band 3              0                   61752                 10041.682117       9472.563623           3                   16824160.675432

     Band 4              0                   64860                 9626.274889       9617.951356           4                     6155796.847541

     Band 5              0                   65535                 12406.309846       11018.961703           5                     2234465.793030

     Band 6              0                   62939                 7953.774876       6632.893753           6                      287947.513685

     Band 7             0                   60439                 6716.239629       5481.027184           7                      225173.147639

     Band 8              0                   64887                 9880.346181       9522.908500           8                      178858.598178

     Band 9              0                   26076                 4803.811391       4310.945524           9                       89953.293881

    Band 10              0                   29891                 14406.564913       11131.594841          10                      14972.427027

    Band 11              0                   25747                 13433.844513       10061.660054          11                       6657.778903