RESEARCH ON PROCESSING TECHNOLOGY OF DIGITIZING GRAPH OF COLOR SCANNING———THE TESTING OF RESCUING TECHNOLOGY OF HISTORIC METEOROLOGICAL ARCHIVES

The digitizing processing of precipitation recording graph using the technology of color scanning graph is an effective test for rescuing historic meteorological archives. According to the precision analysis of digitizing precipitation recording graph and the features of color scanning, the research of processing technology of data access mode, distinguishing precipitation curve color and data processing are stressed to explore. The processing method of precipitation recording graph may furnish a thinking way and reference to other digitizing graph processing.