External vs. Internal Metadata
•We uncovered a
significant number of cases of discrepancies
between values reported by the DRS metadata
(derived from SIP data) and those reported by JHOVE
–100,000
instances image channel size mismatches
– 29,683
instances of image size mismatches
– 1,068
instances of invalid data values
– 401 instances of resolution mismatches
– 160 instances of compression type mismatches