...
3. In Master Black field, enter 40. Not sure if this is still true. Have been keeping this value at zero when setting exposure limits.
Color Balancing the Camera - New Method using QP101 v4
...
3. Set the Line Trigger Interval until the Max Image Scan Speed is 8 10 for now. Adjust values by clicking in the field and typing values or using the up and down arrow on the keyboard. The Line Trigger Value must be greater than theexposure intervals for red, green, and blue.
4. Move the camera carriage over about where the QP Card is on the track.
...
7. Move the Camera if necessary to see the QP Card in the image grab window. Draw a green ROI box in the light gray (white) area. Now the Red, Green, and Blue values above the image grab window show the values inside your square. The RGB value of the QP Card v4 is 235. Adjust the Red, Green, and Blue Exposure times until each value is 235. Remember to turn off the lights regularly!
...
- Place the gray silicone mat on the tray make sure that it is level and perpendicular to the camera’s axis. The mat should be positioned at the height of the core surface. This is an important step. If the mat is placed closer to the camera your calibration will be off.
- Turn on the lights, with the same method used to turn off the lights, and move the camera over the gray mat.
- Unfocus the lens on the camera just a little bit (Figure 36). Look at the Profile graph and rotate the lens’ focus until the RGB lines are smoothsmoother, but still have some variation. de-focus the lens until the RGB line on the Profile graph just become smooth and no more (but still variable)
Figure 36: The lens being unfocused.
If you haven’t set the camera’s height, now is the time to do so! See the section Camera Height Adjustment at the end. Believe this should happen before setting the exposure or the gain.
4. Now move the camera over the gray card silicon mat (Figure 37). The RGB lines should appear “bowed” evenly across profile and centered in the image. If not check the orientation of the grayscale gray mat card. This very important!
...