Deep ensemble model-based moving object detection and classification using SAR images

被引:1
|
作者
Paramasivam, Ramya [1 ]
Kumar, Prashanth [2 ]
Lai, Wen-Cheng [3 ]
Bidare Divakarachari, Parameshachari [4 ]
机构
[1] Mahendra Engn Coll, Dept Comp Sci Engn, Mallasamudram, India
[2] Univ Newcastle, Coll Engn Sci & Environm, Sch Informat & Phys Sci, Callaghan, NSW, Australia
[3] Ming Chi Univ Technol, Dept Elect Engn, New Taipei City, Taiwan
[4] Nitte Meenakshi Inst Technol, Dept Elect & Commun Engn, Bengaluru, India
关键词
bidirectional long short-term memory; improved deep belief network; moving object detection; recurrent neural network; synthetic aperture radar images; SHIP DETECTION; NETWORK; TARGETS;
D O I
10.3389/feart.2023.1288003
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
In recent decades, image processing and computer vision models have played a vital role in moving object detection on the synthetic aperture radar (SAR) images. Capturing of moving objects in the SAR images is a difficult task. In this study, a new automated model for detecting moving objects is proposed using SAR images. The proposed model has four main steps, namely, preprocessing, segmentation, feature extraction, and classification. Initially, the input SAR image is pre-processed using a histogram equalization technique. Then, the weighted Otsu-based segmentation algorithm is applied for segmenting the object regions from the pre-processed images. When using the weighted Otsu, the segmented grayscale images are not only clear but also retain the detailed features of grayscale images. Next, feature extraction is carried out by gray-level co-occurrence matrix (GLCM), median binary patterns (MBPs), and additive harmonic mean estimated local Gabor binary pattern (AHME-LGBP). The final step is classification using deep ensemble models, where the objects are classified by employing the ensemble deep learning technique, combining the models like the bidirectional long short-term memory (Bi-LSTM), recurrent neural network (RNN), and improved deep belief network (IDBN), which is trained with the features extracted previously. The combined models increase the accuracy of the results significantly. Furthermore, ensemble modeling reduces the variance and modeling method bias, which decreases the chances of overfitting. Compared to a single contributing model, ensemble models perform better and make better predictions. Additionally, an ensemble lessens the spread or dispersion of the model performance and prediction accuracy. Finally, the performance of the proposed model is related to the conventional models with respect to different measures. In the mean-case scenario, the proposed ensemble model has a minimum error value of 0.032, which is better related to other models. In both median- and best-case scenario studies, the ensemble model has a lower error value of 0.029 and 0.015.
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页数:18
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