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http://dx.doi.org/10.15207/JKCS.2016.7.6.001

Convergence research of low-light image enhancement method and vehicle recorder  

Hwang, Woo-Sung (Department of Electronic, Electrical, Control & Instrumentation Engineering, Hanyang University)
Choi, Myung-Ryul (Division of Electronics Engineering, Hanyang University)
Publication Information
Journal of the Korea Convergence Society / v.7, no.6, 2016 , pp. 1-6 More about this Journal
Abstract
In this paper, we propose an image enhancement method for vehicle recorder by dividing the images into sub-images and finding local histograms of the sub-images. The proposed method includes the following steps. Firstly, the input image is divided into ($N{\times}M$) pieces. And the sub-images are used to make groups using the adjacent piece-images (eg. piece-imagei,j, piece-imagei,j+1, piece-imagei+1,j and piece-imagei+1,j+1). Secondly, the contrast enhancement processes are executed using the local histogram of the sub-images. Finally, overall image is reconstructed by using a transfer function that reflects the characteristics of the sub-image. The proposed method might achieve more enhanced images for vehicle recorder by suppressing excessive image contrast.
Keywords
Image enhancement; Contrast enhancement; Local histogram; Image reconstruct; Convergence of image enhancement and vehicle recorder;
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