def test_converts_tif_to_lossy_jpeg2000(self):
with temporary_folder() as output_folder:
output_file = os.path.join(output_folder, 'output.jp2')
get_kakadu().kdu_compress(
filepaths.STANDARD_TIF,
output_file,
kakadu_options=kakadu.DEFAULT_COMPRESS_OPTIONS +
kakadu.LOSSY_OPTIONS)
assert os.path.isfile(output_file)
validation.validate_jp2(output_file)
def validate_jp2_conversion(self,
tiff_file,
jp2_filepath,
check_lossless=True):
"""
Validate the jp2 file using jpylyzer, and check that the conversion from tif to jp2 was lossless
Raises a :class:`~image_processing.exceptions.ValidationError` if either check fails.
:param tiff_file:
:param jp2_filepath:
:param check_lossless: if false, don't check the conversion from tif to jp2 was lossless
"""
validation.validate_jp2(jp2_filepath)
if check_lossless:
self.check_conversion_was_lossless(tiff_file, jp2_filepath)
def test_recognises_invalid_jpeg2000(self):
with pytest.raises(exceptions.ValidationError):
validation.validate_jp2(filepaths.INVALID_JP2)
def test_verifies_valid_lossy_jpeg2000(self):
validation.validate_jp2(filepaths.LOSSY_JP2_FROM_STANDARD_TIF)
def test_verifies_valid_jpeg2000(self):
validation.validate_jp2(filepaths.LOSSLESS_JP2_FROM_STANDARD_TIF_XMP)