Evaluation of High Dynamic Range Photography as a Luminance Mapping Technique

Inanici, Mehlika ; Galvin, Jim

Lawrence Berkeley National Laboratory

关键词: Response Functions High Dynamic Range Photography Luminance Mapping;    Cameras;    Photography;    High Dynamic Range Photography Luminance Mapping;    32 Energy Conservation, Consumption, And Utilization;   

DOI  :  10.2172/841925
RP-ID  :  LBNL--57545
RP-ID  :  AC03-76SF00098
RP-ID  :  841925

美国|英语

来源: UNT Digital Library

【 摘 要 】

The potential, limitations, and applicability of the High Dynamic Range (HDR) photography technique is evaluated as a luminance mapping tool. Multiple exposure photographs of static scenes are taken with a Nikon 5400 digital camera to capture the wide luminance variation within the scenes. The camera response function is computationally derived using the Photosphere software, and is used to fuse the multiple photographs into HDR images. The vignetting effect and point spread function of the camera and lens system is determined. Laboratory and field studies have shown that the pixel values in the HDR photographs can correspond to the physical quantity of luminance with reasonable precision and repeatability.