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The IEEE Standards Association Project 4001 (P4001) has worked since 2018 to create a standard that covers a range of unmet needs in the field of hyperspectral imaging. Now in its final stages of review, the P4001 standard is the result of the collective work of a large group comprising a significant fraction of the hyperspectral community. The formal scope of the P4001 standard is hyperspectral imaging in the reflective domain (0.25 to 2.5 micrometer wavelength) using cameras which record at least 30 bands, based on four of the most common camera architectures. A main part of the standard is a set of characteristics covering the spatial, spectral, radiometric, temporal, coregistration, stray light, and imperfection aspects of camera performance. The set of characteristics covers several aspects where current practices have been inadequate including resolution, light collection, and coregistration. The characteristics are defined as physical quantities that are thus not tied to particular test procedures. However, the P4001 standard will incorporate a set of recommended testing procedures based on commonly available test equipment. The P4001 standard also defines a set of camera-related metadata aiming to provide information that can support extraction of reliable and accurate information from images, including information about noise, distortions, and uncertainties. Three notional use cases are defined in the standard representing machine vision, laboratory, and geoscience applications. The standard mandates different sets of characteristics and metadata for P4001-compliant specifications and image data respectively. The P4001 standard will undergo formal reviews during 2023 and is expected to be published in its first version at the end of the year.
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