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A Differential Approach for Computationally Efficient Recovery of Radiometric Response Function
GU Zhenghui * #
College of Automation Science and Engineering, South China University of Technology, Guangzhou 510640
*Correspondence author
#Submitted by
Subject:
Funding: Specialized Research Fund for the Doctoral Program of Higher Education （No.No. 20090172120039）
Opened online: 4 February 2013
Accepted by: none
Citation: GU Zhenghui.A Differential Approach for Computationally Efficient Recovery of Radiometric Response Function[OL]. [ 4 February 2013] http://en.paper.edu.cn/en_releasepaper/content/4516884
 
 
In high dynamic range imaging, it is important to estimate the radiometric response function of a camera that relates image pixel values to scene radiance. Among numerous existing approaches, Debevec and Malik's algorithm has been widely used to determine the response function from multiple differently exposed photographs. However, with this algorithm, the computational complexity goes up when the number of exposures decreases. The problem becomes serious in the case of two exposures. In this paper, we present a differential approach that can significantly reduce the complexity of their algorithm at small numbers of exposures. Experimental results illustrate the performance of the proposed method.
Keywords:High dynamic range imaging; radiometric response function recovery; computational complexity
 
 
 

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