| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring method for recognition which extracts iso-concn. lines and the contour of an irregularly reflective object of measurement in some arbitrary shape through software processing fast and stably at low cost. SOLUTION: An external or internal model is selected, the density of an extraction isodensity line, etc., is specified, and a borer element ring formed by connecting border elements is set for an object image. On the object border, it is considered that the density P on the border operates on the border inside and specific density P0 operates on the border outside. Assuming that the border is an osmotic film, osmotic pressure ϕ=κ(P-P0 ) is generated from the concn. difference P-P0 across the film, a flux q=δϕ/δn is generated from the low-concn. to the high-concn. side to cause osmosis, and the osmotic film is displaced by uΓ-q. This model is formulated as an equation H ϕ=Gq of a border element law, a solution for the flux q=G<-1> Hϕ is obtained through inverse matrix operation, and the border elements are displaced by (u). On the border elements, the osmotic pressure disappears where the concn. Po is balanced with the concn. P, and the displacement of the osmotic film stops. This osmotic film is the iso-concn. line of specific density. |
