EVALUATION METHOD AND INSPECTION APPARATUS OF PAINTED FACE

PROBLEM TO BE SOLVED: To qualify evaluation with respect to finish condition of a painted face, especially dust sensation. SOLUTION: A light-and-darkness patter light with repeated pattern of light- and-darkness is projected on an evaluation object face and a light-and-darkness pattern formed on the...

Full description

Saved in:
Bibliographic Details
Main Author FUKUI TAKAHIRO
Format Patent
LanguageEnglish
Published 21.07.1999
Edition6
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To qualify evaluation with respect to finish condition of a painted face, especially dust sensation. SOLUTION: A light-and-darkness patter light with repeated pattern of light- and-darkness is projected on an evaluation object face and a light-and-darkness pattern formed on the evaluation object face is imaged. A luminance distribution calculation part 24 calculates an intensity distribution in a repeating direction of a light-and-darkness pattern from the image taken. Then, a wavelength calculation part 26 Fourier-tranforms the intensity distribution and calculates a wavelength distribution that is an amplitude distribution with respective to wavelength. An interval integration part 28 calculates an integral value of an interval corresponding to a wavelength region (0.2-2.0 mm) with respect to dust sensation of the wavelength distribution. Based upon the integral value, the evaluation of the dust sensation and a large amplitude of a wave length region are judged.
Bibliography:Application Number: JP19980248657