in src/tiffDirectory.cpp [201:209]
bool TiffDirectory::isJpeg2kCompressed() const {
// Aperio 33003: YCbCr format, possibly with a chroma subsampling of 4:2:2.
const int compression_aperio_YCbCr = 33003;
// Aperio 33005: RGB format
const int compression_aperio_RGB = 33005;
return (compression_ == COMPRESSION_JP2000 ||
compression_ == compression_aperio_YCbCr ||
compression_ == compression_aperio_RGB);
}