Automatic drawing reading system

Abstract

Abstract PURPOSE:To obtain picture data used for CAD, etc., by core-line coupling data, which are straight-line approximated after they are converted from image data into chain data, after they are converted into core lines. CONSTITUTION:When picture data are converted into vector data, the peripheral section of each line is converted into chain data by means of data which are binary coded with a threshold level. The chain data are straight-line approximated by a fixed permissible error and edited as bivector data. A core-line vector is calculated from the bivector data and, at the same time, its line width is calculated. Coupling of these segments is performed in such a way that points in each range are respectively coupled by using a range search. Then, from the information of an internal loop found in the stage where the chain data are edited as bivector data, the disconnected part is supplemented by taking the bivector into consideration and coupled.

Inventors

• 👤 Shota Kawaguri
• 👤 河栗　正太
• 👤 Senyo Masaki
• 👤 正木　千陽
• 👤 Masataka Kobayashi
• 👤 正孝 小林
• 👤 Akihiko Igawa
• 👤 明彦 井川
• 👤 Takashi Matsuzaki
• 👤 松崎　騰

Bibliographic Details