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Characteristic information creation apparatus, characteristic information creation program, characteristic information creation system, characteristic information creation method, optical film design method, and optical film manufacturing method
Characteristic information creation apparatus, characteristic information creation program, characteristic information creation system, characteristic information creation method, optical film design method, and optical film manufacturing method
PROBLEM TO BE SOLVED: To provide a technology that efficiently evaluates, designs or manufactures optical films.SOLUTION: A feature information preparation device comprises: a Fourier transformation unit 23B that calculates a first spectrum distribution of image data corresponding to an image having a prescribed image reflected; a relative spectrum distribution preparation unit 23C that computes a ratio of a reference second spectrum distribution and the first spectrum distribution to calculate a relative spectrum distribution; and a feature information creation unit 23D that calculates an average of a plurality of spectra relative to the same spatial frequency in the relative spectrum distribution, approximates a reflection feature by an expression (1) when a change in the average relative to the spatial frequency is defined as the reflection feature, determines parameters &rgr;,&rgr;,μand &sgr;in the expression (1), and thereby creates a function &rgr;as information for evaluating the reflection feature. In the expression (1), r denotes the spatial frequency.
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