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Abstract
Fast and accurate field measurement with high resolution considering the light reaching human eyes can help calibrate and validate lighting simulation. This study established a workflow of lighting simulation calibration aided by the recently developed panoramic high dynamic range imaging (HDRI) with a 360° field of view (FOV) and conducted a case study. The panoramic maps of illuminance and coefficient of variation of luminance (CVL ) can be retrieved by the HDR images to compare the directional light reaching preset viewpoints within occupants’ visual range. The case study showed a high correlation (rCVL ≥ 0.900, rE ≥ 0.990) of the spatial luminous distribution between the simulation and built reality. Close to 90% of the simulated illuminance data had an error rate within 20%(|e|≤20%), revealed by the 360° residual maps of illuminance. The proposed lighting calibration approach with panoramic HDR Imaging was validated to improve lighting simulation accuracy.
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