COATING COLOR IDENTIFYING DEVICE, COATING COLOR IDENTIFYING METHOD, COATING COLOR IDENTIFYING PROGRAM, AND COMPUTER-READABLE MEDIUM CONTAINING COATING COLOR IDENTIFYING PROGRAM
FIG3 is a diagram showing an example of a relationship between incident light and reflection angles of reflected light in the paint color specifying apparatus in an embodiment
The spectrophotometer measures a spectral reflectance by measuring the intensity of reflected light from a painted surface in radiated light through a photodiode using monochromatic light every 10 nm in wavelengths of 400 to 700 nm, of a light source. The spectrophotometer measures intensity according to a light-receiving angle (reflection angle) of reflected light for incident light. Note that, a light-receiving angle in the spectrophotometer will be described in detail later using FIG3. Next, a relationship between incident light and reflection angles of reflected light will be described using FIG3. FIG3 is a diagram showing an example of a relationship between incident light and reflection angles of reflected light in the paint color specifying apparatus in an embodiment. In FIG3, when the direction perpendicular to a painted surface is assumed to be 0°, incident light enters in a direction of -45° with respect to the perpendicular direction. The incident light is reflected on the painted surface to become reflected light. FIG3 shows that a paint contains a metallic flake pigment and a clear layer is provided on the painted surface. The paint containing the metallic flake pigment is a paint color having a strong impression of shade (a large FF value) in general.
diagram
15
texture information selection display
17
0
tone as FF68 approaches
['1. A paint color specifying apparatus comprising: an image display which causes a display device to display a digital image such that a highlighted portion and a shaded portion of the digital image are able to be designated; a color information acquiring device which acquires color information of the designated highlighted portion and shaded portion; a texture information selection display which causes the display device to display texture information of paint colors such that texture information of a paint color is selectable; a texture information acquiring device which acquires the selected texture information; a color characteristic calculating device which uses a correction coefficient corresponding to the acquired texture information in accordance with the acquired color information and thereby calculates color characteristics of a paint color represented by change in brightness of reflected light according to a reflection angle with respect to incident light; and a paint color specifying device which specifies a paint color in accordance with the calculated color characteristics.']