US 2013/0155401 A1 · IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

Abstract

The present invention enables high-speed and high-precision correction of a ghost detected in a spectrum measuring apparatus. A ghost is detected from spectrum data of reference light measured by the apparatus, and for each wavelength of input light, a light amount ratio α of the input light to the corresponding ghost, as well as a shift amount di indicative of a wavelength difference between the input light and the corresponding ghost are acquired. For each spectrum wavelength of the measured light, wavelength shifting for the corresponding shift amount di and multiplication of the light amount ratio (or intensity ratio) α are performed for estimating the ghost. By removing the estimated ghost from the measured light, it is possible to realize high-precision ghost correction with a reduced amount of calculation and a reduced amount of memory.

Claims9

Dependent claims

An image processing apparatus comprising:

a holding unit configured to hold a correction parameter indicative of a corresponding relation between input light and a stray light component thereof in a spectrum measuring apparatus;
an acquisition unit configured to acquire measured spectrum data, which has been acquired by measuring a sample by the spectrum measuring apparatus;
an estimation unit configured to estimate a stray light component included in the measured spectrum data, using the correction parameter;
and
a correction unit configured to remove the estimated stray light component from the measured spectrum data,
wherein the correction parameter includes, for each spectrum wavelength, ratio information indicative of a light amount ratio or intensity ratio of the input light to the stray light component, and shift information indicative of a wavelength difference between the input light and the stray light component.

3 more elements

Dependencies are inferred from the claim text.

Image processing apparatus and image processing method

Life of this patent

Image processing apparatus and image processing method

Life of this patent

Abstract

Claims9