Abstract: High dynamic range image (HDRI) graphics is a technique that uses cameras to take photos of a variety of exposure to obtain the maximum brightness. Non-visual effects affect human biorhythm and play a very important role in human physical and mental health. As a special type of building, it is of significance to carry out research on how to accurately and effectively determine whether the building space of the industrial heritage building meets the health value of non-visual light environment and how to transform the building space to shape a better light environment. A building in Pinghe packing factory in Wuhan was taken as the research object, and the non-visual light environment in the building space was evaluated by the HDRI graphics. The on-site measurement and verification of the light environment was conducted with instruments and the corresponding reconstruction strategy of the building space was put forward. The results show that HDRI mapping technology is an effective method of non-visual light environment measurement, which can be used to study the influence of different factors on non-visual health in buildings and provide basis for future architectural design and decision-making.

Key words: high dynamic range image, nonvisual effect, healthy light environment, building space