Table of Contents
Advertisement
Piranha4 4K Color Camera User's Manual
u ser sets and au tom atically retrieved at p ow er u p or by u ser selection. If a col or correction m atrix is
d esired , the u ser can d ow nload and save a color correction file d erived from the p rocess d escribed above.
Note: For the color correction to be effective, the cam era shou ld have a w hite balanced ou tp u t w hen color
correction is off.
Cam Expert has a d efault tim eout of 20 second s per com m and , w hich is too short for the FFC
calibration to run fully. You can change the d efault tim eout by setting a com m and line argum ent in
the short-cut:
Right click on the short-cut in the start m enu an d select properties.
Ad d –tim eout 60 to increase the com m and tim eout to 60 second s (See below ). N ote that you
m ust includ e a character space betw een the closing quotation m ark in the target and the
hyphen before the tim eout value.
Repeat for d esktop short-cut
1. Flat Field
This Flat Field set contains a nu m ber of featu res that are u sed to correct im age d istortion d u e to lens
vignetting and u neven illu m ination . .
Note:
1. Flat field coefficients consist of an offset and gain for each p ixel.
2. These are the first u ser corrections ap p lied to the im age.
3. The flat field coefficients are saved and load ed w ith the u ser set .
Parameter
flatfield CorrectionMod e
flatfield CorrectionAlgorithm
Teledyne DALSA
Figure 19: Setting the camera's timeout value
Flat Field
Off – Flat field correction coefficients are not ap p lied .
1.
On – Flat field correction coefficients are ap p lied .
2.
Initialize – Send ing this valu e w ill reset all cu rrent coefficients
3.
(offsets to 0 and gains to 1x).
Basic – Direct calcu lation of coefficients based on cu rrent
1.
average line valu es and target.
Low Pass – A low p ass filter is first ap p lied to the cu rrent
2.
average line valu es before calcu lating the coefficients. Use this
algorithm if the calibration target is not u niform w hite or it s
not p ossible to d efocu s the im age. Becau se of the low p ass filter
this algorithm is not able to correct p ixel-to-p ixel variations and
so it is p referable to u se the ―Basic‖ algorithm if p ossible.
Description
55
03-032-20180-00
Advertisement
Table of Contents
