Comment 5 for bug 486011

For jp2s we may also want to look at the ColorSpace tag, since we could have an 8-bit grayscale.

mang@home:~/public_html/imageconvert/1bit/InterplanetaryRadioCommunicationWithExtraterrestrialCivilizations_jp2
$ /petabox/sw/books/exiftool/exiftool InterplanetaryRadioCommunicationWithExtraterrestrialCivilizations_0000.jp2
ExifTool Version Number : 6.93
File Name : InterplanetaryRadioCommunicationWithExtraterrestrialCivilizations_0000.jp2
Directory : .
File Size : 37 kB
File Modification Date/Time : 2009:12:09 15:54:46
File Type : JP2
MIME Type : image/jpeg2000
Image Height : 3301
Image Width : 2542
Number Of Components : 1
Bits Per Component : 1 Bits, Unsigned
Compression : JPEG 2000
Colorspace : Grayscale
Image Size : 2542x3301