Abstract:

Clear lacquer is playing an important role in improving visual decorative effect of woodworks, and prolonging the endurance to environment, so the quantitative measurement of lacquer effect on wood surface vision is important. It painted five wood species with polyurethane lacquer, and measured the changes of wood surface vision by nine chromatic and textural parameters: hue, saturation, illuminance, contrast ratio, angular second moment, sum of variances, long-runth emphasis, fractal dimension, horizontal energy percentage of wavelet, and the results showed that clear lacquer could totally strengthen the visual effect of wood surface, but the influence degree for different textural types were different. For originally clear and apparent texture species, the being affected extent were intensified, but not remarkable; for originally either weak or textureless species, the being affected extents by clear lacquer were comparatively intensified, and remarkable. On base of t test, saturation, illuminance and sum of variances were selected as primary parameters to indicate the effect of clear lacquer on wood textural vision.

Key words: wood, clear lacquer, texture, vision character