# Package picard.filter

- Class Summary
  Class | Description
  --- | ---
  CountingDuplicateFilter | Counting filter that discards reads that have been marked as duplicates.
  CountingFilter | A SamRecordFilter that counts the number of bases in the reads which it filters out.
  CountingMapQFilter | Counting filter that discards reads below a configurable mapping quality threshold.
  CountingPairedFilter | Counting filter that discards reads that are unpaired in sequencing and paired reads whose mates are not mapped.