Title :
Low visual difference virtual high dynamic range image synthesizer from a single legacy image
Author :
Wang, Tsun-Hsien ; Chiu, Ching-Te
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
New generations of display technologies provide signicantly improved dynamic range over conventional display devices. Current inverse tone mapping schemes require multiple exposure low dynamic range (LDR) images to generate high dynamic range (HDR) images. In this work, we propose an exposure dependent S curve to convert one optimized LDR image to multiple images with different brightness, which are then fused into a virtual real scene HDR image with wide dynamic range. According to our implementation results, the dynamic range can reach about 105. The synthesizer is robust and temporally coherent, and does not require image specific parameter adjustment. This paper also presents the image quality assessment with HDR visual difference predictor (HDR-VDP) and relative entropy contrast, and our work has better performance than other inverse tone mapping operators (iTMOs) for the both image quality assessments.
Keywords :
computer displays; entropy; image fusion; natural scenes; optimisation; virtual reality; HDR; LDR; S curve; VDP; display technology; entropy contrast; high dynamic range; image fusion; image quality assessment; image synthesizer; inverse tone mapping schemes; legacy image; low dynamic range; optimization; virtual real scene; visual difference predictor; Brightness; Conferences; Dynamic range; Entropy; Image quality; Visualization; High Dynamic Range (HDR); Inverse Tone Mapping; Low Dynamic Range (LDR); Visual Difference Predictor (VDP);
Conference_Titel :
Image Processing (ICIP), 2011 18th IEEE International Conference on
Conference_Location :
Brussels
Print_ISBN :
978-1-4577-1304-0
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2011.6116090