Local gonio-reflection characteristics-acquiring method, image processing method, image display method, and local gonio-reflection characteristics-acquiring apparatus

A non-transitory computer-readable recording medium storing therein an image data setting program for an image data setting apparatus capable of setting image data related to a foil forming image, the program causing a computer to perform:

• acquiring local gonio-reflection characteristics of an image which is aggregation of dots,
• wherein sensory glossiness (L) of the image determined by equation (1) is 1.0 or more, the sensory glossiness (L) being determined based on a height of a peak (H), a height of a base (B) and a half width of a peak (W) of a distribution information of lightness with respect to light receiving angle, and the distribution information being obtained by measuring reflected light of a measuring light irradiated into the image, and
• wherein the local gonio-reflection characteristics is acquired with a spatial resolution (A), wherein when the spatial resolution (A) is a spatial resolution when the local gonio-reflection characteristics is acquired and when the resolution (B) represents a distribution information of the dots within a region where the sensory glossiness (L) being 1.0 or more, the spatial resolution (A) and the resolution (B) satisfying formula (2),
• L=Log((H−B)/W) Equation (1)
• 0.8<A/B<10 Formula (2)