| Title |
Design of High-performance Defogging Circuit for Real-time Processing of 8K UHD Images |
| Authors |
황준상(Junsang Hwang) ; 이효연(Hyoyeon Lee) ; 조경순(Kyeongsoon Cho) |
| DOI |
https://doi.org/10.5573/ieie.2022.59.11.27 |
| Keywords |
Defogging; 8K UHD; Real-time processing; MMAL filter; Circuit architecture |
| Abstract |
Clear images are required for stable performance in the field of computer vision such as object recognition and object tracking. Effective defogging techniques are important because it is difficult to recognize the objects in foggy weather. In this paper, we propose a high-performance defogging circuit architecture that processes 8K UHD images in real time. The defogging algorithm implemented in our circuit, proposed by Tarel, extracts fog components based on a single image using MMAL filters. In order to achieve the trade-off between defogging capability and circuit performance, we determined the appropriate filter size through experiments. We also reduced the circuit area by the efficient management of line buffers storing intermediate data without any loss in the circuit performance. The synthesized circuit using 65nm standard cell library includes 13,792 gates and its maximum operating frequency is 1,200MHz. Hence, 8K UHD images are processed at the speed of 1.2 GPPS, satisfying the performance required for real-time processing. |