Here are the simplified steps: $ gunzip encoderstrategy.pgm.gz $ gdcmimg encoderstrategy.pgm encoderstrategy.dcm $ dcmcjpls encoderstrategy.dcm compressed.dcm dcmcjpls: /tmp/buildd/charls-1.0/encoderstrategy.h:81: void EncoderStrategy::AppendToBitStream(LONG, LONG): Assertion `bitpos >=0' failed. Aborted
encoderstrategy.pgm.gz
Description: GNU Zip compressed data