COATING COLOR IDENTIFYING DEVICE, COATING COLOR IDENTIFYING METHOD, COATING COLOR IDENTIFYING PROGRAM, AND COMPUTER-READABLE MEDIUM CONTAINING COATING COLOR IDENTIFYING PROGRAM
FIG8 is a diagram showing an example of the method of calculating a correction coefficient used in the paint color specifying apparatus in an embodiment
FIG8 has data items of "name," "FF68," "r(Y15-Y75)," "ar(Y15-Y25)," "br(Y25-Y45)." "cr(Y45-Y75)" and "d(Y110/Y75)." In FIG8, "r(Y15-Y75)" becomes "1" in each piece of texture information and values of each data item are modified in proportion to this. Accordingly, a Y value difference in each piece of texture information is normalized. The data item of "d(Y1J0/Y75)" represents Y110 and Y75, that is, a magnitude of brightness change in a shaded portion. The normalized widths of the Y values shown in FIG8 are stored in the correction coefficient storage 17 as correction coefficients, read by the color characteristic calculating device 18 and used to calculate color characteristics. In formulas 3 to 5, Y15 and Y75 are known values because they are numerical values designated from a digital image. Y110 is calculated from Y75 that is known. ar, br and d are correction coefficients "ar(Y15-Y25)," "br(Y25-Y45)" and "d(Y110/Y75)" described in FIG8. Y45 is calculated when Y110 is calculated and Y25 is calculated when Y45 is calculated. The data item of "calculation order" indicates a calculation order of these Y values.
diagram
20
paint color specifying device
['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.']