Findclouds Manual 34
Remark:
This kind of evaluation is more sophisticated than the simple sun pixel evaluation.
Because of rays and sparks the pattern of 'Sun on clear sky' also can include Cloud Objects. In
difference to real Cloud Objects they normally contain only a few pixel. By option "Min. Object
Size" it is possible to exclude them and improve the evaluation. Also it is clear, that the evaluation
depends on resolution of the image and the options must be adjusted, when images are calculated
with less resolution.
Table: sunflag numbers
New number Old number Description
0
0
Sun not visible
1
1
Sun on clear sky
3
0
Parts of sun cloud covered
5
0
Sun behind clouds, but a bright dot is visible
8
9
Sun outside view, either because of zenith angle, or sun is hidden by horizon
9
9
No Sunflag evaluation was made
