HDR Image Synthesis Using Visual Brightness Mapping and Local Surround-Based Image Fusion

Sung-Hak LEE  

IEICE TRANSACTIONS on Electronics   Vol.E102-C   No.11   pp.802-809
Publication Date: 2019/11/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.2019DIP0001
Type of Manuscript: Special Section PAPER (Special Section on Electronic Displays)
high dynamic range,  tone mapping,  local surround,  soft mixing,  CRF,  radiance map,  

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An HDR (High Dynamic Range) image synthesis is a method which is to photograph scenes with wide luminance range and to reproduce images close to real visual scenes on an LDR (Low Dynamic Range) display. In general, HDR images are reproduced by taking images with various camera exposures and using the tone synthesis of several images. In this paper, we propose an HDR image tone mapping method based on a visual brightness function using dual exposed images and a synthesis algorithm based on local surround. The proposed algorithm has improved boundary errors and color balance compared with existing methods. Also, it improves blurring and noise amplification due to image mixing.