APPARATUS FOR JUDGING AND PROCESSING BRANCHES AND OR CROSSINGS FOR USE IN AUTOMATIC CURVE TRACING SYSTEM

摘要

In an automatic curve tracing system wherein an area containing a curve to be traced is scanned by a detector and the detector is moved successively according to a positional information obtained by the scanning operation, there is provided apparatus for judging a branch and or crossing including means to judge whether the branch and or crossing are included or not in the scanning area and means to store the result of the judgement while the same branch and or crossing are contained in the subsequent scanning area.