Patent ID: 8908176

Claim:
A spectral characteristic obtaining apparatus comprising: a detection unit configured to detect light quantities in a plurality of wavelength bands from a measurement target; a storage unit configured to store pre-obtained spectral characteristics of reference samples; a calculation unit configured to calculate a primary transformation matrix from the light quantities and the pre-obtained spectral characteristics of at least one of the reference samples and a secondary transformation matrix from one of the pre-obtained spectral characteristics corresponding to a primary wavelength band and another one of the pre-obtained spectral characteristics corresponding to a second wavelength band; and an estimation unit configured to estimate the spectral characteristics of the measurement target by performing a primary estimation on the light quantities in the plural wavelength bands by using the primary transformation matrix, performing a secondary estimation on a result of the primary estimation by using the secondary transformation matrix, and compositing a result of the secondary estimation with the result of the primary estimation; wherein the pre-obtained spectral characteristics have larger error in the secondary wavelength band than in the primary wavelength band.