# Ca—Cell Amplitude

> [!note] Deze pagina is nog niet in het Nederlands beschikbaar en wordt in het Engels weergegeven.


Ca (reported in [p-µm] (perceived microns)) is defined as the average amplitude of all cells features identified within the texture of a material.

It quantifies the difference between the highest and lowest points, (Average Height of cells- Average Depth of valleys) providing a measure of the vertical dimension of the texture.
This parameter is used to understand the depth and relief of the surface texture, which directly influences visual and tactile perception.

![image description](../_images/1768553820360-1765872829682-heightmap-sa-rough.png)

**A higher cell amplitude indicates a more pronounced texture, lower values will be measured on smoother materials.**


Unit- [Perceived Microns pµm](glossary-of-measurement-parameters-unit-perceived-microns-p-m.md)