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High Dynamic Range Imaging by Fusing Multiple Raw Images and Tone Reproduction

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1 Author(s)
Wen-Chung Kao ; Nat. Taiwan Normal Univ., Taipei

This paper presents an integrated color imaging system for taking images in extremely high dynamic range scenes. The system first fuses several differently exposed raw images to acquire more intensity information. The effective dynamic range of the image raw data can be extended to 256 times if five differently exposed images are fused. Then it runs edge detection iterations to extract the image details in different luminance levels. The proposed tone reproduction algorithm equalizes the histogram of the extracted fine edges which tends to assign larger dynamic range for highly populated regions. Finally, the local contrast enhancement is performed to further refine the image details. The experimental results show that the proposed high dynamic range imaging system has good performance on both tone and color reproduction.

Published in:

Consumer Electronics, IEEE Transactions on  (Volume:54 ,  Issue: 1 )

Date of Publication:

February 2008

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