Specifications

Chapter 9 Operating Vision Manager

9-63

Note: Q

Q: Only the rectangular window can be selected (angle = 0).

R: If the Robot Controller is not capable of angle measurement,

you cannot set any data at Start Angle or End Angle.

Search refers to searching for a point of concordance, by moving the standard image data

(search model), registered in advance, within the range for search (within the window range)

of the object to be measured. (Refer to Fig. 1) With the µVision board, the standard image

data is called “search model” which consists of image data and reference coordinates (OX,

OY). (Refer to Fig. 2) Numeral to express the degree of concordance between the search

model and measure object image is called “concordance”. If acquired concordance is greate

than the specified value, coordinates for the point of concordance between the search model

and the measure object image can be obtained. The minimum unit for coordinate detection

accuracy for pixel is one pixel. With sub-pixel, measuring result can be obtained with an

accuracy of under one pixel. If measured by sub-pixel, the measuring time will be longer than

the measurement by pixel.

- Search -

Search model

Fig. 1

Window

Image data

Fig. 2