But it's more than a classification scheme; ODC is a measurement system for software processes based on the semantic information contained in the defect stream.

Using TM data and image process software ENVI3.2, the winter wheat area and distribution information were obtained by methods of Spectral Angle Mapper and man machine interactive interpretation etc.

The paper analyses the software fault that occurred in NEAX61E exchanges and meaning of PHASE information. It gives a method to collect and analyse software fault data through example.