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Roads Extraction from Satellite Images using Convolution Neural Network Model (Deeplabv3+) A Case Study in Lattakia city

استخراج الطرق من صور الأقمار الصناعية باستخدام نموذج الشبكة العصبونية الالتفافية (+Deeplabv3): حالة دراسية في مدينة اللاذقية

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 Publication date 2023
and research's language is العربية
 Created by Shamra Editor




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The purpose of this paper is to extract roads from satellite images, based on developing the performance of the deep convolutional neural network model (Deeplabv3+) for roads segmentation, and to evaluate and test the performance of this model after training on our data.This experimental study was applied at Google Colab cloud platform, by software instructions and advanced libraries in the Python.We conducted data pre -processing to prepare ground truth masks,then we trained the model.The training and validation process required (Epochs=4), by(Patch Size=4images).The Loss function decreased to its minimum value (0.025). Training time was three hours and ten minutes, aided by the advanced Graphics Processing Unit (GPU) and additional RAM.We achieved good results in evaluating the accuracy of the predictions of the trained model (IoU = 0.953). It was tested on two different areas, one of which is residential and the other agricultural in Lattakia city. The results showed that the trained model (DeepLabv3+) in our research can extract the road network accurately and effectively.But its performance is poor in some areas which includes tree shadows on the edges of the road, and where the spectral characteristics are similar to the road, such as the roofs of some buildings, and it is invalid for extracting side and unpaved roads. The research presented several recommendations to improve the performance of the (Deeplabv3+) in extracting roads from high-resolution satellite images, which is useful for updating road maps and urban planning works.


Artificial intelligence review:
Research summary
يهدف هذا البحث إلى استخراج الطرق من صور الأقمار الصناعية باستخدام نموذج الشبكة العصبونية الالتفافية العميقة (Deeplabv3+). تم تطبيق الدراسة على منصة غوغل كولاب باستخدام مكتبات بايثون المتطورة. تضمنت العملية معالجة مسبقة للبيانات، تدريب النموذج، والتحقق من أدائه. استغرقت عملية التدريب ثلاث ساعات وعشرة دقائق باستخدام وحدة معالجة الرسومات المتطورة (GPU) وذاكرة وصول عشوائي إضافية. أظهرت النتائج دقة عالية في استخراج الطرق (IoU = 0.953)، ولكن النموذج واجه صعوبات في بعض المناطق مثل تلك التي تحتوي على ظلال الأشجار أو خصائص طيفية مشابهة للطرق. قدم البحث توصيات لتحسين أداء النموذج في استخراج الطرق من صور الأقمار الصناعية عالية الدقة، مما يسهم في تحديث خرائط الطرق وأعمال التخطيط الحضري.
Critical review
دراسة نقدية: على الرغم من أن البحث قدم نموذجًا فعالًا لاستخراج الطرق من صور الأقمار الصناعية، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، النموذج يواجه صعوبات في التعامل مع الظلال والأجسام ذات الخصائص الطيفية المشابهة للطرق، مما يشير إلى ضرورة تحسين معالجة البيانات المسبقة أو تعديل النموذج ليكون أكثر دقة في هذه الحالات. ثانياً، لم يتم اختبار النموذج على نطاق واسع من البيانات المتنوعة، مما قد يؤثر على تعميم النتائج. أخيرًا، يمكن أن تكون هناك حاجة إلى تحسينات إضافية لاستخراج الطرق الفرعية وغير المعبدة بشكل أكثر دقة.
Questions related to the research
  1. ما هو الهدف الرئيسي من البحث؟

    الهدف الرئيسي هو استخراج الطرق من صور الأقمار الصناعية باستخدام نموذج الشبكة العصبونية الالتفافية العميقة (Deeplabv3+).

  2. ما هي المنصة المستخدمة لتطبيق الدراسة؟

    تم تطبيق الدراسة على منصة غوغل كولاب باستخدام مكتبات بايثون المتطورة.

  3. ما هي دقة النموذج في استخراج الطرق؟

    حقق النموذج دقة عالية في استخراج الطرق بقيمة (IoU = 0.953).

  4. ما هي التحديات التي واجهها النموذج في استخراج الطرق؟

    واجه النموذج صعوبات في استخراج الطرق في المناطق التي تحتوي على ظلال الأشجار أو خصائص طيفية مشابهة للطرق، وكذلك في استخراج الطرق الفرعية وغير المعبدة.


References used
The purpose of this paper is to extract roads from satellite images, based on developing the performance of the deep convolutional neural network model (Deeplabv3+) forroads segmentation, and to evaluate and test the performance of this model after training on our data.This experimental study was applied atGoogle Colab cloud platform, by software instructions and advanced libraries in the Python.We conducted data pre -processing to prepare ground truth masks,thenwe trained the model.Thetraining and validation process required (Epochs=4), by(Patch Size=4images).The Loss function decreased to its minimum value (0.025). Training time was three hours and ten minutes, aided by the advanced Graphics Processing Unit (GPU) and additional RAM.We achieved good results in evaluating the accuracy of the predictions of the trained model (IoU = 0.953). It was tested on two different areas, one of which is residential and the other agricultural in Lattakia city. The results showed that the trained model (DeepLabv3+) in our research can extract the road network accurately and effectively.But its performance is poor in some areas which includes tree shadows on the edges of the road, and where the spectral characteristics are similar to the road, such as the roofs of some buildings, and it is invalid for extracting side and unpaved roads. The research presented several recommendations to improve the performance of the (Deeplabv3+) in extracting roads from high-resolution satellite images, which is useful for updating road maps and urban planning works.
Christopher, S.;Christopher, H. DeepLearningNeuralNetworks forLandUse LandCoverMapping. IGARSS -IEEE International Geoscience and Remote Sensing Symposium, 2018, pp. 2995–2990
A Beginner’s Guide to Segmentation in Satellite Images: Walking through Machine Learning Techniques for Image Segmentation and Applying Them to Satellite Imagery. https://www.gsitechnology.com/Beginners-Guide-to-Segmentation-in-Satellite-Images(Accessed95-92-2022)
Chen, L.; Qianli, Z.; Papandreou, G.; Schroff, F.; Adam,H.Encoder-Decoder with Atrous Separable Convolution for Semantic Image Segmentation, Computer Vision –ECCV, 2018, pp 833–851
Darwishe, D.; Mohammad, A.; Chaaban, F. Developing a Model of Deep Learning by ANNs for Urban Areas Extraction from Remote Sensing Images -Study Area: HomsTartous, Al-Baath University Journal, V. 43, NO. 7, 2021, PP.11-42
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