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Detail Enhancement for Infrared Images Based on Propagated Image Filter

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  • Yishu Peng
  • Yunhui Yan
  • Jiuliang Zhao

Abstract

For displaying high-dynamic-range images acquired by thermal camera systems, 14-bit raw infrared data should map into 8-bit gray values. This paper presents a new method for detail enhancement of infrared images to display the image with a relatively satisfied contrast and brightness, rich detail information, and no artifacts caused by the image processing. We first adopt a propagated image filter to smooth the input image and separate the image into the base layer and the detail layer. Then, we refine the base layer by using modified histogram projection for compressing. Meanwhile, the adaptive weights derived from the layer decomposition processing are used as the strict gain control for the detail layer. The final display result is obtained by recombining the two modified layers. Experimental results on both cooled and uncooled infrared data verify that the proposed method outperforms the method based on log-power histogram modification and bilateral filter-based detail enhancement in both detail enhancement and visual effect.

Suggested Citation

  • Yishu Peng & Yunhui Yan & Jiuliang Zhao, 2016. "Detail Enhancement for Infrared Images Based on Propagated Image Filter," Mathematical Problems in Engineering, Hindawi, vol. 2016, pages 1-12, February.
    • Handle: RePEc:hin:jnlmpe:9410368
    DOI: 10.1155/2016/9410368
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