Method of deriving color response characteristics of image acquisition device and image acquisition device therefor

An image acquisition device comprising:

• a multi-spectral image sensor including a plurality of pixels that are two-dimensionally arranged, the multi-spectral image sensor configured to acquire an image using the plurality of pixels;
• and
• a processor configured to:
• derive a first-order color response characteristic of the image acquisition device by performing a matching operation of statistically matching a relationship between device coordinates and colorimetric coordinates of an image acquisition device using first training data sets;
• derive a second-order color response characteristic of the image acquisition device by further performing the matching operation using second training data sets, the second training data sets corresponding to a spectrum of one or more edge regions of a color gamut of a color matching function representing a sensitivity of a human eye;
• and
• process the image acquired by the multi-spectral image sensor by using the first-order color response characteristic and the second-order color response characteristic,
• wherein the second-order color response characteristic corresponds to a conversion relationship between an XYZ tristimulus value and an RGB output signal of the image acquisition device.

A non-transitory recording medium comprising a computer readable program in which a program for implementing a method of operation performed by an electronic device is recorded, the method comprising:

• collecting first training data sets;
• deriving a first-order color response characteristic of an image acquisition device by performing a matching operation of statistically matching a relationship between device coordinates and colorimetric coordinates of the image acquisition device using the first training data sets;
• collecting second training data sets corresponding to a spectrum of one or more edge regions of a color gamut of a color matching function representing a sensitivity of a human eye;
• and
• deriving a second-order color response characteristic of the image acquisition device by further performing the matching operation using the second training data sets,
• wherein the second-order color response characteristic corresponds to a conversion relationship between an XYZ 3 stimulus value and an RGB output signal of the image acquisition device.