Imaging system and imaging method

Abstract

According to an aspect, there is provided an imaging system (1) for imaging of subjects. The imaging system (1) comprises: a spectral camera (2) configured to capture a spectral image of a subject (6) in a spectral capture period comprising a plurality of spectral time points, the spectral image comprising a plurality of spectral frames each captured at a wavelength of a plurality of wavelengths and each corresponding to a spectral time point of the plurality of spectral time points; a reference camera (3) configured to capture a reference image of the subject (6) in a reference capture period comprising a plurality of reference time points and corresponding to the spectral capture period, the reference image comprising a plurality of reference frames each corresponding to a reference time point of the plurality of reference time points and a spectral frame of the plurality of spectral frames; a calculation unit (4) configured to calculate a motion vector for each reference frame of a subset of the plurality of reference frames; and an alignment unit (5) configured to align the spectral frames with each other by applying each calculated motion vector to the spectral frame of the plurality of spectral frames to which it corresponds. According to other aspects, there is provided an imaging method for imaging of subjects and a computer program which, when executed on a computing device, carries out a method of imaging of subjects.

Description

technical field

[0001] The technical field of the invention relates to imaging systems, eg multispectral and hyperspectral imaging systems, and imaging methods, computer programs and computer readable media. Background technique

[0002] The general background of the invention is spectral imaging or spectral analysis. Spectral imaging, such as multispectral or hyperspectral imaging, provides a wealth of information that cannot be readily obtained from single or triple spectral channel (eg, RGB) imaging. The benefits of spectral imaging are even more pronounced when imaging more complex objects such as human skin. When imaging human skin, the detected backscattered light is modulated by several chromophores including hemoglobin, melanin, water, lipids, carotenoids, and bilirubin.

[0003] Reflectance spectroscopy is the study of light as a function of wavelength. It finds many applications such as medical applications, material analysis and soil analysis. Reflectance spec...

Examples

Embodiment Construction

[0052] Embodiments of the present disclosure and its various features and advantageous details are explained more fully with reference to the non-limiting examples described and / or illustrated in the drawings and described in detail in the following description. It should be noted that features shown in the figures are not necessarily drawn to scale and that one skilled in the art may utilize features of one embodiment with other embodiments even if not explicitly described herein. Descriptions of well-known components and processing techniques may be omitted so as not to unnecessarily obscure the embodiments of the disclosure. The examples used herein are intended only to facilitate an understanding of ways in which an embodiment of the invention may be practiced, and to also enable those skilled in the art to practice the embodiment. Accordingly, the examples herein should not be construed as limiting the scope of embodiments of the present disclosure, which is defined only ...

technical field

[0001] The technical field of the invention relates to imaging systems, eg multispectral and hyperspectral imaging systems, and imaging methods, computer programs and computer readable media. Background technique

[0002] The general background of the invention is spectral imaging or spectral analysis. Spectral imaging, such as multispectral or hyperspectral imaging, provides a wealth of information that cannot be readily obtained from single or triple spectral channel (eg, RGB) imaging. The benefits of spectral imaging are even more pronounced when imaging more complex objects such as human skin. When imaging human skin, the detected backscattered light is modulated by several chromophores including hemoglobin, melanin, water, lipids, carotenoids, and bilirubin.

[0003] Reflectance spectroscopy is the study of light as a function of wavelength. It finds many applications such as medical applications, material analysis and soil analysis. Reflectance spec...

Examples

Embodiment Construction

[0052] Embodiments of the present disclosure and its various features and advantageous details are explained more fully with reference to the non-limiting examples described and / or illustrated in the drawings and described in detail in the following description. It should be noted that features shown in the figures are not necessarily drawn to scale and that one skilled in the art may utilize features of one embodiment with other embodiments even if not explicitly described herein. Descriptions of well-known components and processing techniques may be omitted so as not to unnecessarily obscure the embodiments of the disclosure. The examples used herein are intended only to facilitate an understanding of ways in which an embodiment of the invention may be practiced, and to also enable those skilled in the art to practice the embodiment. Accordingly, the examples herein should not be construed as limiting the scope of embodiments of the present disclosure, which is defined only ...

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