Re: [gdal-dev] gdalwarp ERROR 6: PHOTOMETRIC=YCBCR requires a source raster with only 3 bands (RGB)

[Stephen Woodbridge]

Right, but the point 1 is the message says:
ERROR 6: PHOTOMETRIC=YCBCR requires a source raster with only 3 bands (RGB)
ie: requires a source raster with only 3 bands (RGB) and the source 
raster has only 3 bands!
-dstalpha if I understand correctly is to create a alpha band in the 
output file. So the error message is misleading at best.

Point 2 is how does one translate a utm to wgs84 using YCBCR and 
generate an appropriate mask or alpha channel to hide the pixels that 
are outside the transformed image. I suppose it needs to be done in 
multiple steps of warp and translate in some specific order with 
specific options but its not obvious how.

-Steve

On 7/1/2018 10:14 AM, Michael Smith wrote:
Steve,

Setting that alpha channel makes it 4 bands. RGB + alpha channel. Either remove 
the ycbcr or the alpha channel.

Michael Smith
Remote Sensing/GIS Center
US Army Corps of Engineers

On Jul 1, 2018, at 10:07 AM, Stephen Woodbridge <stephenwoodbridg...@gmail.com> 
wrote:

Hi all,

I'm trying to convert a utm jp2 file to a wgs84 tif file and getting "ERROR 6: 
PHOTOMETRIC=YCBCR requires a source raster with only 3 bands (RGB)" but the src file 
has only 3 RBG bands.

gdalwarp -t_srs EPSG:4326 -dstalpha -r bilinear -of GTiff -co BIGTIFF=YES -co 
TILED=YES -co COMPRESS=JPEG -co JPEG_QUALITY=90 -co PHOTOMETRIC=YCBCR 
'00010.jp2' 'tif/00010.tif'

The command works if I remove -dstalpha so it seems that the error message is 
erroneous and might need fixed. Regardless, I don't want the transformed image 
to have black around it, so how do I do that?

-Steve

# gdalinfo 00010.jp2
Driver: JP2OpenJPEG/JPEG-2000 driver based on OpenJPEG library
Files: 00010.jp2
        00010.jp2.aux.xml
Size is 340668, 65335
Coordinate System is:
PROJCS["UTM_Zone_38_Northern_Hemisphere",
     GEOGCS["GCS_WGS_1984",
         DATUM["WGS84",
             SPHEROID["WGS84",6378137,298.257223563]],
         PRIMEM["Greenwich",0],
         UNIT["Degree",0.017453292519943295]],
     PROJECTION["Transverse_Mercator"],
     PARAMETER["latitude_of_origin",0],
     PARAMETER["central_meridian",45],
     PARAMETER["scale_factor",0.9996],
     PARAMETER["false_easting",500000],
     PARAMETER["false_northing",0],
     UNIT["Meter",1]]
Origin = (265998.000000000000000,1848002.000000000000000)
Pixel Size = (3.000000000000000,-3.000000000000000)
Image Structure Metadata:
   INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left  (  265998.000, 1848002.000) ( 42d48'19.81"E, 16d42'11.25"N)
Lower Left  (  265998.000, 1651997.000) ( 42d49'28.30"E, 14d55'56.73"N)
Upper Right ( 1288002.000, 1848002.000) ( 52d22'11.02"E, 16d35' 0.58"N)
Lower Right ( 1288002.000, 1651997.000) ( 52d18'23.31"E, 14d49'33.87"N)
Center      (  777000.000, 1749999.500) ( 47d35' 9.06"E, 15d48'48.25"N)
Band 1 Block=1024x1024 Type=Byte, ColorInterp=Red
   Overviews: 170334x32667, 85167x16333, 42583x8166, 21291x4083, 10645x2041
   Overviews: arbitrary
   Image Structure Metadata:
     COMPRESSION=JPEG2000
Band 2 Block=1024x1024 Type=Byte, ColorInterp=Green
   Overviews: 170334x32667, 85167x16333, 42583x8166, 21291x4083, 10645x2041
   Overviews: arbitrary
   Image Structure Metadata:
     COMPRESSION=JPEG2000
Band 3 Block=1024x1024 Type=Byte, ColorInterp=Blue
   Overviews: 170334x32667, 85167x16333, 42583x8166, 21291x4083, 10645x2041
   Overviews: arbitrary
   Image Structure Metadata:
     COMPRESSION=JPEG2000


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