ALTANA Auto-Chart - Manual (Page 27)

6.5 Structure Chart
The new structure chart, a 3-dimensional appearance system, allows evaluating process
stability and harmony between add-on parts and car body. The ratio of the various
structure sizes are evaluated - improved correlation to the visual perception.
Scale 1: Measurement for Orange Peel
The most critical parameter is orange peel or long wave as this type of structure is most
obvious to the customer at a far distance. Therefore, first the user needs to check whether
the orange peel data is within specifications.
Scale 2: Longwave Coverage LC
.. the ratio between Wb and Wd. If Wb is higher than Wd, the longer waves will be covered
and the surface will appear smoother. Measurement range is from -100 to +100.
Scale 3: Wet Look WL
.. the ratio between Wd and Wc. If Wd is higher than Wc, the surface will have a "Wet
Look" from the far distance, i.e. it will look very brilliant (= far distance DOI). Measurement
range is from -100 to +100.
Example
Up to 4 filters can be defined:
1. Filter name: Structure_DarkMetallic_Horiz
Color: Select all dark metallic colors
Check zones: Select the individual horizontal check zones
2. Filter name: Structure_LiteMetallic_Horiz
Color: Select all lite metallic colors
Check zones: Select the individual horizontal check zones