Efficient and lightweight quantized compressive sensing using μ-law
IoT devices for video sensing need to operate within the constraints of limited bandwidth and low computing capabilities. To that effect, Compressive Sensing (CS) emerged as a prominent technique for balancing the quality of images/video and the computing/communication overheads. For CS of video dat...
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| 其他作者: | |
| 格式: | Conference Paper |
| 语言: | English |
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2020
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| 主题: | |
| 在线阅读: | https://hdl.handle.net/10356/140397 |
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| author | Pudi, Vikramkumar Chattopadhyay, Anupam Lam, Kwok-Yan |
| author2 | School of Computer Science and Engineering |
| author_facet | School of Computer Science and Engineering Pudi, Vikramkumar Chattopadhyay, Anupam Lam, Kwok-Yan |
| author_sort | Pudi, Vikramkumar |
| collection | NTU |
| description | IoT devices for video sensing need to operate within the constraints of limited bandwidth and low computing capabilities. To that effect, Compressive Sensing (CS) emerged as a prominent technique for balancing the quality of images/video and the computing/communication overheads. For CS of video data, the Block-based CS (BCS) is typically used due to low complexity. However, while CS reduces the number of samples to be transmitted, the bit-width of each sample increases due to the linear algebraic operations involved in CS, thus making CS less attractive in its pure and straightforward form. To further optimize the use of CS in IoT devices for video sensing, we explore the use of μ-law quantization technique due to its low hardware implementation overhead. We designed and implemented a complete CS platform with the integration of μ-law quantization, and studied the image quality at different compression ratios. The results show that the proposed quantization technique requires only up to 40 additional LUTs compared to the baseline algorithm, while achieving an additional compression of up to 280% in the best case. |
| first_indexed | 2024-10-01T07:50:14Z |
| format | Conference Paper |
| id | ntu-10356/140397 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:50:14Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1403972020-05-28T09:04:02Z Efficient and lightweight quantized compressive sensing using μ-law Pudi, Vikramkumar Chattopadhyay, Anupam Lam, Kwok-Yan School of Computer Science and Engineering 2018 IEEE International Symposium on Circuits and Systems (ISCAS) Engineering::Computer science and engineering Quantization (signal) Image Coding IoT devices for video sensing need to operate within the constraints of limited bandwidth and low computing capabilities. To that effect, Compressive Sensing (CS) emerged as a prominent technique for balancing the quality of images/video and the computing/communication overheads. For CS of video data, the Block-based CS (BCS) is typically used due to low complexity. However, while CS reduces the number of samples to be transmitted, the bit-width of each sample increases due to the linear algebraic operations involved in CS, thus making CS less attractive in its pure and straightforward form. To further optimize the use of CS in IoT devices for video sensing, we explore the use of μ-law quantization technique due to its low hardware implementation overhead. We designed and implemented a complete CS platform with the integration of μ-law quantization, and studied the image quality at different compression ratios. The results show that the proposed quantization technique requires only up to 40 additional LUTs compared to the baseline algorithm, while achieving an additional compression of up to 280% in the best case. NRF (Natl Research Foundation, S’pore) 2020-05-28T09:04:01Z 2020-05-28T09:04:01Z 2018 Conference Paper Pudi, V., Chattopadhyay, A., & Lam, K.-Y. (2018). Efficient and lightweight quantized compressive sensing using μ-law. Proceedings of the 2018 IEEE International Symposium on Circuits and Systems (ISCAS). doi:10.1109/ISCAS.2018.8351505 978-1-5386-4882-7 https://hdl.handle.net/10356/140397 10.1109/ISCAS.2018.8351505 2-s2.0-85057074889 en © 2018 IEEE. All rights reserved. |
| spellingShingle | Engineering::Computer science and engineering Quantization (signal) Image Coding Pudi, Vikramkumar Chattopadhyay, Anupam Lam, Kwok-Yan Efficient and lightweight quantized compressive sensing using μ-law |
| title | Efficient and lightweight quantized compressive sensing using μ-law |
| title_full | Efficient and lightweight quantized compressive sensing using μ-law |
| title_fullStr | Efficient and lightweight quantized compressive sensing using μ-law |
| title_full_unstemmed | Efficient and lightweight quantized compressive sensing using μ-law |
| title_short | Efficient and lightweight quantized compressive sensing using μ-law |
| title_sort | efficient and lightweight quantized compressive sensing using μ law |
| topic | Engineering::Computer science and engineering Quantization (signal) Image Coding |
| url | https://hdl.handle.net/10356/140397 |
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