政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/131937

政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/131937

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政大機構典藏 > 資訊學院 > 資訊科學系碩士在職專班 > 學位論文 > Item 140.119/131937

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題名:	應用於水下休閒活動之即時物件偵測系統 Real-time object detection with applications to underwater recreational activities
作者:	鄭文嘉 Cheng, Wen-Chia
貢獻者:	廖文宏 Liao, Wen-Hung 鄭文嘉 Cheng, Wen-Chia
關鍵詞:	水下影像色彩修正物體偵測遷移學習深度學習 Underwater image Color correction Object detection Transfer learning Deep learning
日期:	2020
上傳時間:	2020-09-02 13:15:19 (UTC+8)
摘要:	本論文試圖在一般相機所拍攝之水下影像，利用顏色修正技術，讓目前已存在之影像資料集，經過訓練後，可被用來偵測水下影像。本研究基於深度學習概念，使用屬於生成對抗網路之pix2pix network，透過控制loss function/ iteration/ 資料分群等方式，分析及評估各種參數調校，將水下影像進行修正，成為如水面上拍攝之影像。此外，藉由遷移學習概念來訓練模組，分析各種物件之AP及整體mAP，達成水下即時偵測物件的需求。評估及測試不同模型與調整參數，得到最佳結果為：Fish AP為0.71、Jellyfish AP為0.72及Diver AP為0.39，而整體 mAP則為0.606，相同條件下與未經影像修正相比，mAP大幅提高了50.3%。期許此色彩修正及偵測系統，讓水下活動人員進行各項休閒之時，即時被面鏡所限制的有限視野，也能藉著水下相機的架設，迅速偵測出視野內外所需之物件位置及資訊，在有限時間內，增加水下活動的效益。 This thesis attempts to employ color correction techniques to restore underwater images so that object detection models trained with existing image datasets can be used to cope with underwater images without extensive retraining. Based on the concept of deep learning, this study uses pix2pix network, a variant of generative adversarial network (GAN), to enhance the color of underwater images. We analyze and evaluate the efficacy of restoration by exploring different combinations of loss function/ iteration/ data grouping. The object detection model is trained using transfer learning technique, and average precision (AP) and overall mAP are analyzed to meet the requirements of underwater activities. Experimental results indicate that the AP for Fish is 0.71, the AP for jellyfish is 0.72, and the AP for diver is 0.39, with an overall mAP of 0.606, demonstrating a remarkable 50.3% improvement when color correction is applied. It is expected that users can quickly identify the position and information of objects of interest within the field of view limited by the mask through the system, thereby enhancing the experience of underwater activities.
參考文獻:	[1] 李明儒, et al. "休閒潛水者對潛水風險的認知與損害之研究." 運動與遊憩研究 1.3 (2007): 14-33. [2] 李凡, et al. "水下声传播的发展及其应用." 物理 43.10 (2014): 658-666. [3] Klemm et al., “Exploring Our Fluid Earth is based on the nationally recognized Fluid Earth/Living Ocean (FELO) aquatic science curriculum.” 1995. [4] Girshick, Ross, et al. "Rich feature hierarchies for accurate object detection and semantic segmentation." Proceedings of the IEEE conference on computer vision and pattern recognition. 2014. [5] Ren, Shaoqing, et al. "Faster r-cnn: Towards real-time object detection with region proposal networks." Advances in neural information processing systems. 2015. [6] Redmon, Joseph, et al. "You only look once: Unified, real-time object detection." Proceedings of the IEEE conference on computer vision and pattern recognition. 2016. [7] Steiner, A. "Understanding the Basics of Underwater Lighting." Ocean News & Technology 19.4 (2013): 10-12. [8] Liu, Wei, et al. "Ssd: Single shot multibox detector." European conference on computer vision. Springer, Cham, 2016. [9] Radford, Alec, Luke Metz, and Soumith Chintala. "Unsupervised representation learning with deep convolutional generative adversarial networks." arXiv preprint arXiv:1511.06434 (2015). [10] Kuznetsova, Alina, et al. "The Open Images Dataset V4: Unified image classification, object detection, and visual relationship detection at scale." (2020). [11] Zhu, Jun-Yan, et al. "Unpaired image-to-image translation using cycle-consistent adversarial networks." Proceedings of the IEEE international conference on computer vision. 2017. [12] Sato, Kazunori. "An inside look at google bigquery." White paper, URL: https://cloud. google. com/files/BigQueryTechnicalWP. pdf (2012). [13] Mirza, Mehdi, and Simon Osindero. "Conditional generative adversarial nets." arXiv preprint arXiv:1411.1784 (2014). [14] Isola, Phillip, et al. "Image-to-image translation with conditional adversarial networks." Proceedings of the IEEE conference on computer vision and pattern recognition. 2017. [15] Ronneberger, Olaf, Philipp Fischer, and Thomas Brox. "U-net: Convolutional networks for biomedical image segmentation." International Conference on Medical image computing and computer-assisted intervention. Springer, Cham, 2015. [16] Panaretos, Victor M., and Yoav Zemel. "Statistical aspects of Wasserstein distances." Annual review of statistics and its application 6 (2019): 405-431. [17] Arjovsky, Martin, Soumith Chintala, and Léon Bottou. "Wasserstein gan." arXiv preprint arXiv:1701.07875 (2017). [18] Gulrajani, Ishaan, et al. "Improved training of wasserstein gans." Advances in neural information processing systems. 2017. [19] Wu, N., and V. Rathod. "Tensorflow detection model zoo." (2017). [20] Wang, Ting-Chun, et al. "High-resolution image synthesis and semantic manipulation with conditional gans." Proceedings of the IEEE conference on computer vision and pattern recognition. 2018. [21] Pedersen, Malte, et al. "Detection of marine animals in a new underwater dataset with varying visibility." Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition Workshops. 2019. [22] Li, Xirong, et al. "COCO-CN for Cross-Lingual Image Tagging, Captioning, and Retrieval." IEEE Transactions on Multimedia 21.9 (2019): 2347-2360. [23] Kornblith, Simon, Jonathon Shlens, and Quoc V. Le. "Do better imagenet models transfer better?." Proceedings of the IEEE conference on computer vision and pattern recognition. 2019. [24] Teama, Tarek, et al. "Real Time Object Detection Based on Deep Neural Network." International Conference on Intelligent Robotics and Applications. Springer, Cham, 2019.T Lin, Aire, et al. "Focal loss for dense object detection." IEEE Trans. Pattern Anal. Mach. Intell. 42.2 (2020): 318-327. [25] Lin, Aire, et al. "Focal loss for dense object detection." IEEE Trans. Pattern Anal. Mach. Intell. 42.2 (2020): 318-327. [26] Akkaynak, Derya, and Tali Treibitz. "Sea-thru: A method for removing water from underwater images." Proceedings of the IEEE conference on computer vision and pattern recognition. 2019. [27] Kolsur, Anoop, Sandeep Awale, and Nagraj Ullagaddi. "POV: Persistence of Vision." [28] Mittal, Anish, Rajiv Soundararajan, and Alan C. Bovik. "Making a “completely blind” image quality analyzer." IEEE Signal processing letters 20.3 (2012): 209-212. [29] Bochkovskiy, Alexey, Chien-Yao Wang, and Hong-Yuan Mark Liao. "YOLOv4: Optimal Speed and Accuracy of Object Detection." arXiv preprint arXiv:2004.10934 (2020).
描述:	碩士國立政治大學資訊科學系碩士在職專班 105971018
資料來源:	http://thesis.lib.nccu.edu.tw/record/#G0105971018
資料類型:	thesis
DOI:	10.6814/NCCU202001418
顯示於類別:	[資訊科學系碩士在職專班] 學位論文

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