Requirements

Automatic mode

Image source equipment

The image source equipment includes the camera, the lighting and the optical elements. The following conditions are required for image source equipment when you want optimal performance in automatic mode:

Exhibit a linear response in the 10% to 90% output range
Exhibit no response offset
Exhibit a moderate color imbalance

Calibration target	Min	Typ	Max	Units
Linear range	10		90	% Full Scale
Linearity error	-0.5	0	0.5	% Full Scale
Offset	-0.5	0	0.5	% Full Scale
Color imbalance ratio	0.25	1.00	4.00

Calibration target

The calibration target is a neutral color object located in the field of view of the camera during the calibration process.

The form of the target can be either:

Clustered light gray pixels located in a specific area of the camera field of view
Non-clustered-light gray pixels located in a specific area of the camera field of view
Non-clustered-light gray pixels located anywhere in the camera field of view

The calibration target can be:

In the object to inspect
A specific object placed in the camera field of view during the calibration phase

The appearance of the target must be:

A neutral color (usually light gray)
The level of the brightest component within 75% to 90% of the full scale
The level of the darkest component above 15% of the full scale
At least 256 pixels

Calibration target	Min	Typ	Max	Units
Color	–	Light gray	–	–
Brightest component level	75	85	90	% Full Scale
Darkest component level	15	–	–
Area	256	–	–	pixels

AWB ROI

Following rules apply to the geometrical properties of the AWB ROI. It must be:

A single rectangular area
Completely within the camera active area
Minimum 32 pixels wide
Minimum 1 line high
Minimum 256 pixels of area

AWB ROI	Parameter	Min	Max	Units
X origin	WBO_OrgX	0	Hactive_Px – 32	pixels
Y origin	WBO_OrgY	0	Vactive_Ln – 1	pixels
Width	WBO_Width	32	Hactive_Px – WBO_OrgX	pixels
Height	WBO_Height	1	Vactive_Ln – WBO_OrgY	lines
Area		256	Hactive_Px ´ Vactive_Ln	pixels

Manual mode

Image source equipment

The following condition is required for image source equipment when you want optimal performance in manual mode:

Exhibit a moderate color imbalance

Calibration target	Min	Typ	Max	Units
Color imbalance ratio	0.1	1.00	10	-

Gain range

Gain range on R, G, B channels ranges from 1 to 10

Calibration target	Min	Typ	Max
Gain R, Gain G, Gain B range	1.0		10
WBO_GainR, WBO_GainG and WBO_GainB value range	1000		10,000