Title:
IMAGE-PROCESSING DEVICE
Document Type and Number:
Japanese Patent JPH0545138
Kind Code:
A
Abstract:
PURPOSE:To obtain an image-processing device which can measure a grain size number accurately regardless of adhesion of dust and dirt on a surface to be inspected of a sample or missing of a crystal grain boundary. CONSTITUTION:In an image-processing device for measuring a crystal grain size number from an enlarged image of a microscope, a predetermined projection data with a constant width in vertical and horizontal directions of a binary- coded image data of a surface to be inspected is created by a projection data creation circuit 15, significance of a picture element color is determined by a projection data judgment circuit 17 according to the number of distributed white or black picture elements in a direction of each line from the projection data, and at the same time a binary-coded projection data is created. A point where data changes from 0 to 1 in a direction of each line of this binary-coded projection data is detected by a differential circuit 9 and the number of the change points is counted by the counter 9.
Inventors:
SAKAMOTO TETSUYA
Application Number:
JP20795291A
Publication Date:
February 23, 1993
Filing Date:
August 20, 1991
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01B11/24; G01N33/20; G06T1/00; (IPC1-7): G01B11/24; G01N33/20; G06F15/62
Attorney, Agent or Firm:
Mamoru Takada (1 person outside)
Next Patent: JPH0545139