Distortion Tab - Eurotherm TC3001 User Manual

Transit Inspector Pro
Setting panel consists of the following tabs (see figure 37):
Distortion — nonlinear image transformation (see
Zoom/Rotation — linear image transformation (see
Perspective — linear image transformations (shift, skew, stretch) and perspective elimination
(see 9 C.7 Perspective Tab
Points calibration — by points image transformation (see
page 69).
To switch between tabs, click its name.
Note: There are only two tabs displayed on setting panel. To switch to the next, click Tabs List button
(see figure 37) and choose the required one.
To avoid distortion:
1. Make some snap-shots of carriages.
2. Launch Camera Calibration Utility.
3. Click Open image button and select an archive image of carriage (see item 1).
4. Using parameters settings panel (tabs) set calibration parameters. It is recommended to use
image on Transformed tab for visual check of image changes.
5. Click Open image button and select an another archive image of carriage. If necessary, edit
calibration parameters (see item 4).
6. Click Save or Save as button on the utility toolbar to save parameters.
C.5 Distortion Tab
The Distortion tab is used to make nonlinear image transformation and defines the following para-
meters:
Pincushion — pincushion and barrel distortion
Corners — deskewing corner position
Keystone [Y] — deskewing image position on vertical line
Keystone [X] — deskewing image position on horizontal line
Distortion center X, Y — distortion center coordinates
Balance — applying defined values to the image width or height
65
Appendix C: Camera Calibration Utility
9 C.5 Distortion Tab
on page 68);
www.isscctv.com
User Guide
on page 65);
9 C.6 Zoom/Rotation Tab
9 C.8 Points Calibration Tab
on page 67);
on