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Implementation of a Novel, Fast and Efficient Image De-Hazing Algorithm on Embedded Hardware Platforms

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Abstract

Improving the visibility of hazy images is desirable for robot navigation, security surveillance, and other computer vision applications. The presence of fog significantly damages the quality of the captured image, which does not only affect the reliability of the surveillance system but also produce potential danger. Therefore, developing as well as implementing a simple and efficient image de-hazing algorithm is essential. The reconfigurable computing devices like Field Programmable Gate Array and Digital Signal Processing (DSP) processors are used to implement these image processing applications. Several strategies are available for configuring these reconfigurable devices. In this paper, two approaches for hardware implementation of image de-hazing algorithm are presented. The pixel wise and gray image-based de-hazing algorithm is proposed in this paper. The key advantage of this proposed method is to estimate accurate transmission map. It eliminates the computationally complex step of refine transmission map as well as halos & artifacts in the recovered image and achieves faster execution without noticeable degradation of the quality of the de-hazed image. The proposed method is initially verified in MATLAB and compared with the existing four state-of-art methods. This algorithm is implemented on two different hardware platforms, i.e., DSP Processor (TMS320C6748) with floating pointing operations and Zynq-706 fixed-point operations. The performance comparison of hardware architectures is made with respect to Average Contrast of the Output Image, Mean Square Error, Peak Signal to Noise Ratio, Percentage of Haze Improvement and Structural Similarity Index (SSIM). The results obtained show that Zynq-706-based hardware implementation processing speed is 1.33 times faster when compared to DSP processor-based implementation for an image dimensions of \(256\times 256\).

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Data Availability Statement

Data sharing not applicable to this article as no datasets were generated or analyzed during the current study.

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Acknowledgements

The authors are thankful to SERB, Department of Science Technology, Govt. of India, for providing financial support under the grant of EEQ/2016/000556.

Funding

This work was supported by the Science and Engineering Research Board (SERB) India, under the grant of EEQ/2016/000556.

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  1. Department of Electronics and Communication Engineering, NIT Warangal, Warangal, India

    Prathap Soma & Ravi Kumar Jatoth

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  1. Prathap Soma
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Correspondence to Prathap Soma.

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Soma, P., Jatoth, R.K. Implementation of a Novel, Fast and Efficient Image De-Hazing Algorithm on Embedded Hardware Platforms. Circuits Syst Signal Process 40, 1278–1294 (2021). https://doi.org/10.1007/s00034-020-01517-4

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