In everyday consultations, roughness and relief on the skin surface are mostly judged by eye. 3D skin smoothness assessment turns changes in surface height into a visual display, so that “this area is a little uneven” becomes a micro-topography map that can be pointed to and compared.
From visual inspection to a false-color map
Skin smoothness is affected by pores, fine lines, acne scars, scarring and other factors. It is visible under side light and invisible under frontal light; different angles and different lighting can lead to completely different judgements.
The feature converts complex 3D computation results into a micro-topography false-color map, using color to represent different degrees of skin smoothness, which reduces the interference of light and angle on observation.
How to read the colors
1. Blue and green: relatively smooth skin, or shallow background texture.
2. Yellow and orange: moderate surface irregularity.
3. Red and white: more pronounced height differences, to be treated as areas of focus.
Display intensity can be adjusted freely, and the view can be switched between the original image and the false-color map, preserving the real appearance of the skin while highlighting problems that are hard to see with the naked eye.
Application value
For practitioners: the interactive 3D micro-topography map helps locate skin areas that need further attention and supports assessment of treatment options.
For patients: it gives an intuitive view of surface relief and identifies the main problem areas; at follow-up visits, the same assessment method can be used to observe skin improvement.
For clinics: it establishes a data-based assessment method, reduces judgement based on verbal experience alone and improves consistency; the distribution of raised and depressed areas also supports tailored planning and lowers the barrier to communication.
This kind of assessment depends on stable 3D capture. ZETTA offers ±0.2mm 3D measurement accuracy, a 0.5mm mesh density and 56-megapixel texture mapping, which preserves fine surface relief; total scan time is under 25 seconds, making it suitable for routine consultations.
Aesthetic skin assessment is gradually moving from experience-based judgement toward data-assisted analysis, enabling visual interpretation and long-term tracking of fine surface relief to support reading of skin condition.
This article is based on a CASZM WeChat article. View the original article