Method of hyperspectral measurement

Abstract

The present disclosure provides a method of providing a hyperspectral image of a scene comprising a point (p). The method comprises providing an imaging device (') comprising a two-dimensional image sensing unit () having a spectral characteristic, which varies along at least one direction in a plane parallel with an image sensor (), acquiring a first two-dimensional image () of the scene, the first image comprising the point (p), wherein the spectral content of the scene varies along the direction as a consequence of the varying spectral characteristic of the image sensing unit (), moving the imaging device (′) and the scene relative to each other, acquiring a second two-dimensional image (I) of the scene, the second image comprising the point (p), wherein the spectral content of the scene varies along the direction as a consequence of the varying spectral characteristic of the image sensing unit (), identifying the point (p) in the second image (I) as a second pixel at a position (x, y) depicting the point (p), providing a spectral vector (S(p)) of the point, and providing an updated spectral vector (S′(p)) of the point based on an applicability vector (A(p)) of the point (p), the spectral vector (S(p)) of the point, a spectral value (z(p)) of the second pixel and an applicability vector (B(p)) of the second pixel.