How to extract specific information from gdalinfo output?

I'm using GDAL to get information about a satellite image. The stdout looks like the following:

$ gdalinfo B02.jp2
Driver: JPEG2000/JPEG-2000 part 1 (ISO/IEC 15444-1)
Files: B02.jp2
       B02.jp2.aux.xml
Size is 10980, 10980
Coordinate System is:
PROJCS["WGS 84 / UTM zone 15N",
    GEOGCS["WGS 84",
        DATUM["WGS_1984",
            SPHEROID["WGS 84",6378137,298.257223563,
                AUTHORITY["EPSG","7030"]],
            AUTHORITY["EPSG","6326"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AXIS["Latitude",NORTH],
        AXIS["Longitude",EAST],
        AUTHORITY["EPSG","4326"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",-93],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","32615"]]
Origin = (600000.000000000000000,5400000.000000000000000)
Pixel Size = (10.000000000000000,-10.000000000000000)
...

When I try to pull out a single line from stdout, it yields an error:

$ gdalinfo B02.jp2 | grep Origin
maximum number of samples exceeded (120560400 > 67108864)
error: cannot decode code stream
Origin = (600000.000000000000000,5400000.000000000000000)

How can I extract information from the output (e.g. Origin) and assign it to a variable?

Solution

You can use GNU grep with its PCRE capabilities enabled by -P flag and store only the matching word within braces()

gdalinfo B02.jp2 2>/dev/null | grep -oP 'Origin = \(\K[^\)]+'
600000.000000000000000,5400000.000000000000000

The 2>/dev/null is for suppressing error messages from your command. To store it in a variable just do,

myOriginInfo="$(gdalinfo B02.jp2 2>/dev/null | grep -oP 'Origin = \(\K[^\)]+')"
printf "%s\n" "$myOriginInfo"

Since you don't have GNU grep installed, you can use this POSIX compatible awk expression to achieve your result,

awk 'BEGIN{FS="[()]"}/Origin/{print $2}' file
600000.000000000000000,5400000.000000000000000

and) in variable as

myOriginInfo="$(gdalinfo B02.jp2 2>/dev/null | awk 'BEGIN{FS="[()]"}/Origin/{print $2}')"