DEK高级培训资料.pdf - 第172页
THE FOLLOWING IS CALCULA TED Vision calibration • The number of pixels mo ved • The s ize of a pixel in video units Issue 2: July 2007 • The s ize of a pixel in video units • The movement in y when x is moved • The movem…
POSITION 3
2mm
Vision system locates and
Remembers position 3
In x and y
Vision calibration
Issue 2: July 2007
2mm
In x and y
THE FOLLOWING IS CALCULATED
Vision calibration
•
The number of pixels moved
•
The size of a pixel in video units
Issue 2: July 2007
•
The size of a pixel in video units
•
The movement in y when x is moved
•
The movement in x when y is moved
•
The size of the graphic to be displayed
on the set up screen
It is important that the fiducials are
set-up accurately before the ‘theta
calibration’ and ‘fiducial capture’
Vision calibration
Issue 2: July 2007
calibration’ and ‘fiducial capture’
are carried out