1. Low-Light Image Enhancement Using Adaptive Digital Pixel Binning.
- Author
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Yoonjong Yoo, Jaehyun Im, and Joonki Paik
- Subjects
- *
IMAGE enhancement (Imaging systems) , *PIXELS , *DIGITAL image processing , *IMAGE sensors , *DIGITAL images - Abstract
This paper presents an image enhancement algorithm for low-light scenes in an environment with insufficient illumination. Simple amplification of intensity exhibits various undesired artifacts: noise amplification, intensity saturation, and loss of resolution. In order to enhance low-light images without undesired artifacts, a novel digital binning algorithm is proposed that considers brightness, context, noise level, and anti-saturation of a local region in the image. The proposed algorithm does not require any modification of the image sensor or additional frame-memory; it needs only two line-memories in the image signal processor (ISP). Since the proposed algorithm does not use an iterative computation, it can be easily embedded in an existing digital camera ISP pipeline containing a high-resolution image sensor. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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