[GRASS-user] Preprocessing irsp6 liss4

[Markus Neteler]

Hi,

you posted to a list... perhas you need to perform atmospheric
correction (i.atcorr in GRASS) since they might come from different
acquisition dates?

Best,
Markus

On Thu, Jul 30, 2009 at 3:44 AM, Ravinder Singh
Bhalla<rsbhalla at gmail.com> wrote:
> Dear Neil/Srini,
> I'd like to be able to use a single set of training sites for about 6
> adjacent imageries (IRS P-6 LISS-IV).
> I've pre-processed the imageries, calculating the apparent radiance at
> sensor using the gain and bias values provided in the header (attached
> file). I had somehow thought this would fix the problem but results show
> that I still need to re-calibrate the imageries by regressing the images
> using values for same/similar object pairs (water bodies, field etc.).
> Is this the correct procedure?
> Header file used for gain/bias(offset) and screenshot of results attached.
> Thanks,
> Ravi
>
> Driver: GTiff/GeoTIFF
> Files: BAND2.TIF
> Size is 6076, 6232
> Coordinate System is:
> PROJCS["GeoTIFF Version 1.8.1 October 31, 1995,
> http://www.earthlink.net/~ritter/geotiff/geotiff.htm",
>    GEOGCS["Indian 1975",
>        DATUM["Indian_1975",
>            SPHEROID["Everest 1830 (1937
> Adjustment)",6377276.345,300.8016980102425,
>                AUTHORITY["EPSG","7015"]],
>            AUTHORITY["EPSG","6240"]],
>        PRIMEM["Greenwich",0],
>        UNIT["degree",0.0174532925199433],
>        AUTHORITY["EPSG","4240"]],
>    PROJECTION["Polyconic"],
>    PARAMETER["latitude_of_origin",12.159814569919],
>    PARAMETER["central_meridian",79.5816375647949],
>    PARAMETER["false_easting",0],
>    PARAMETER["false_northing",0],
>    UNIT["metre",1,
>        AUTHORITY["EPSG","9001"]]]
> Origin = (-15215.028340350654616,15587.608734479999839)
> Pixel Size = (5.000000000000000,-5.000000000000000)
> Metadata:
>  AREA_OR_POINT=Area
>  TIFFTAG_IMAGEDESCRIPTION=PRODUCT ID =08003005-01 LOCATION =101/14300
>   ACQUISITION DATE =20061204
> SATELLITE =IRS P6     SENSOR =LISS4      SENSOR MODE =PLD MX LOOK ANGLE =
> -8.25
>                        LOCATION =                  ACQUISITION DATE =
> SATELLITE =           SENSOR =           SENSOR MODE =       LOOK ANGLE =
>                        LOCATION =                  ACQUISITION DATE =
> SATELLITE =           SENSOR =           SENSOR MODE =       LOOK ANGLE =
>                        LOCATION =                  ACQUISITION DATE =
> SATELLITE =           SENSOR =           SENSOR MODE =       LOOK ANGLE =
> PRODUCT TYPE =MAP ORIENTED       PRODUCT SIZE =FULL SCENE
> TYPE OF PROCESSING =SYSTEMATIC  RESAMPLING =CC
> VOLUME #/# IN SET =01/01 PIXELS PER LINE = 6076 LINES PER BAND = 6232/ 6232
> START LINE # =    1 BLOCKING FACTOR = 1 RECORD LENGTH = 6076 PIXEL SIZE =
>  5.00
> OUTPUT BITS PER PIXEL = 8 ACQUIRED BITS PER PIXEL = 7
> BANDS PRESENT =234                             PRODUCT CODE =STPC00GTJ
> VERSION NO =IRSP6DPSV1R2        ACQUISITION TIME =05:11:24:523
> GENERATING COUNTRY =INDIA          GENERATING AGENCY =ISRO/NRSA
> GENERATING FACILITY =DPS-5   PRODUCT ENDIAN =LITTLE
>
>
> REV            CBIASES AND GAINS IN THE BAND ORDER AS ON THIS TAPE
>       0.000000000000000       27.165099999999999
>       0.000000000000000       23.056600000000000
>       0.000000000000000       36.777299999999997
>       0.000000000000000        0.000000000000000
>       0.000000000000000        0.000000000000000
>       0.000000000000000        0.000000000000000
>       0.000000000000000        0.000000000000000
>       0.000000000000000        0.000000000000000
>
> SENSOR GAIN STATE =   2   2   1
> SENSOR STATE =GOOD
>
>
>
>
>
>
>
>
> GEOMETRIC DATA MAP PROJECTION =POL  ELLIPSOID =EVEREST            DATUM
> =IND-I
> USGS PROJECTION PARAMETERS =  6377276.345000000670552
>  6356075.412999999709427
>       0.000000000000000        0.000000000000000       79.581637564794903
>      12.159814569919002        0.000000000000000        0.000000000000000
>       0.000000000000000        0.000000000000000        0.000000000000000
>       0.000000000000000        0.000000000000000        0.000000000000000
>       0.000000000000000
> UL = 0792630.2977E 121802.5057N    -15215.028     15587.609
> UR = 0794315.8359E 121802.5065N     15164.972     15587.609
> LR = 0794315.3078E 120108.3931N     15164.972    -15572.391
> LL = 0792630.8276E 120108.3922N    -15215.028    -15572.391
> CENTER = 0793453.0673E 120935.5788N       -25.028         7.609  3038  3116
> OFFSET =     5 ORIENTATION ANGLE =  0.00
> SUN ELEVATION ANGLE =67.3 SUN AZIMUTH ANGLE = 96.7 ALTITUDE =821421.00000
> HEADING ANGLE =    192.968399
>
>
>
>
>
>
>  TIFFTAG_SOFTWARE=
>  TIFFTAG_DATETIME=2008:02:22 16:30:24
>  TIFFTAG_ARTIST=Sk. Sazid Mahammad,DPSD/SIPG/SIIPA, SAC,
> ISRO,Ahmedabad-53,India.,                        e-mail:
>  TIFFTAG_HOSTCOMPUTER=DPS-5
>  TIFFTAG_XRESOLUTION=0.0020000001
>  TIFFTAG_YRESOLUTION=0.0020000001
>  TIFFTAG_MINSAMPLEVALUE=0
>  TIFFTAG_MAXSAMPLEVALUE=255
>  TIFFTAG_RESOLUTIONUNIT=3 (pixels/cm)
> Image Structure Metadata:
>  INTERLEAVE=BAND
> Corner Coordinates:
> Upper Left  (  -15215.028,   15587.609) ( 79d26'30.30"E, 12d18'2.51"N)
> Lower Left  (  -15215.028,  -15572.391) ( 79d26'30.83"E, 12d 1'8.39"N)
> Upper Right (   15164.972,   15587.609) ( 79d43'15.84"E, 12d18'2.51"N)
> Lower Right (   15164.972,  -15572.391) ( 79d43'15.31"E, 12d 1'8.39"N)
> Center      ( -25.0283404,   7.6087345) ( 79d34'53.07"E, 12d 9'35.58"N)
> Band 1 Block=6076x1 Type=Byte, ColorInterp=Gray
>
> _______________________________________________
> grass-user mailing list
> grass-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-user
>
>