| Title |
Particle swarm optimization-based local entropy weighted histogram equalization for infrared image enhancement |
| ID_Doc |
42032 |
| Authors |
Wan, MJ; Gu, GH; Qian, WX; Ren, K; Chen, Q; Maldague, X |
| Title |
Particle swarm optimization-based local entropy weighted histogram equalization for infrared image enhancement |
| Year |
2018 |
| Published |
|
| DOI |
10.1016/j.infrared.2018.04.003 |
| Abstract |
Infrared image enhancement plays a significant role in intelligent urban surveillance systems for smart city applications. Unlike existing methods only exaggerating the global contrast, we propose a particle swam optimization-based local entropy weighted histogram equalization which involves the enhancement of both local details and fore-and background contrast. First of all, a novel local entropy weighted histogram depicting the distribution of detail information is calculated based on a modified hyperbolic tangent function. Then, the histogram is divided into two parts via a threshold maximizing the mterclass variance in order to improve the contrasts of foreground and background, respectively. To avoid over-enhancement and noise amplification, double plateau thresholds of the presented histogram are formulated by means of particle swarm optimization algorithm. Lastly, each sub-image is equalized independently according to the constrained sub-local entropy weighted histogram. Comparative experiments implemented on real infrared images prove that our algorithm outperforms other stateof-the-art methods in terms of both visual and quantized evaluations. (C) 2018 Elsevier B.V. All rights reserved. |
| Author Keywords |
Infrared image enhancement; Local entropy weighted histogram; Double plateaus; Particle swarm optimization; Smart city |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000441117700022 |
| WoS Category |
Instruments & Instrumentation; Optics; Physics, Applied |
| Research Area |
Instruments & Instrumentation; Optics; Physics |
| PDF |
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