×

Component shape recognition method

  • US 4,981,372 A
  • Filed: 10/21/1988
  • Issued: 01/01/1991
  • Est. Priority Date: 10/23/1987
  • Status: Expired due to Term
First Claim
Patent Images

1. A component shape recognition method comprising the steps of:

  • detecting a boundary of an object on a recognition plane of an image display means,detecting corners of said object on the basis of variation of an angle between a predetermined axis and a line connecting two picture elements having a predetermined distance on said boundary,detecting a shape of said object on the basis of positions and shapes of said corners,detecting a midpoint of a tip portion of said object,setting a search zone containing said tip portion of said object on said recognition plane, to be scanned by horizontal scanning lines and vertical scanning lines,calculating segments of said horizontal scanning lines and said vertical lines overlapping with said object on the basis of the respective coordinate values,creating data of positions of said tip portion of coordinate values on said horizontal scanning lines and coordinate values on said vertical scanning lines,detecting a protruded direction of said tip portion on the basis of a segment touching on a boundary of said search zone, anddetecting a midpoint in a cross direction of said tip portion by calculating an average of said coordinate values of plural segments crossing said tip portion.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×