TAMS High Gloss Appearance Parameters
TAMS High Gloss parameters describe how a smooth, reflective surface actually appears to a human observer, rather than just reporting traditional gloss or waviness values. Together they quantify image clarity, contrast, texture and panel‑to‑panel matching, so users can link measured numbers directly to visible differences in perceived quality.
| Parameter | Description |
|---|---|
| Quality Q | Composite quality index (0–100) that combines contrast, sharpness, waviness into a single score describing how clean, deep and mirror-like a high gloss surface appears. |
| Harmony H | Panel-to-panel matching index that quantifies how consistently different parts look to each considering differences in the amplitude of waviness and structure size. |
| Contrast C | Measures the contrast between the specular highlight and background as determined by the base paint colour. |
| Sharpness S | Describes the sharpness of reflected edges and fine detail; higher values indicate crisp, well-focused images that correlate with high DOI and premium perceived quality. High values indicate a hazy surface when viewed at 1.5m. |
| Waviness (TAMS) W | Quantifies the visual impact of orange peel viewed at 1.5m, higher values indicate more visible texture and lower perceived smoothness. |
| Dimension D | Describes the dominant wavelength of surface structure visible at a 1.5 m viewing distance, helping explain visible differences in orange peel. Low values (<2mm) indicate a surface dominated by shortwave texture, larger values (>7mm) indicate a surface dominated by longer wave texture. |
| Long-Wave Texture LW | Long-wave texture index that quantifies the visual impact of large-scale undulations and flow in the surface. |
| Short-Wave Texture SW | Short-wave texture index that describes finer-scale micro-structure on the surface; higher SW values mean more small-scale texture that can make reflections look grainy and reduce perceived smoothness. |
| DOI (TAMS) | TAMS distinctness-of-image metric that quantifies how clearly patterns are reflected on the surface; higher DOI values correspond to sharper, less distorted images and a higher perceived finish quality. |
| Gloss 20° (TAMS) | High-sensitivity 20° gloss value measured within the TAMS system, providing a conventional gloss scale for very high gloss finishes so appearance data can be linked back to existing gloss specifications. |
| Rspec (TAMS) | Peak gloss value measured in the specular highlight that is sensitive to surface texture. |
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