Land, Free Full-Text
4.6 (681) In stock
![](https://www.mdpi.com/land/land-11-01212/article_deploy/html/images/land-11-01212-g001-550.jpg)
With the rapid expansion of urban built-up areas in recent years, it has become particularly urgent to develop a fast, accurate and popularized urban built-up area extraction method system. As the direct carrier of urban regional relationship, urban built-up area is an important reference to judge the level of urban development. The accurate extraction of urban built-up area plays an important role in formulating scientific planning thus to promote the healthy development of both urban area and rural area. Although nighttime light (NTL) data are used to extract urban built-up areas in previous studies, there are certain shortcomings in using NTL data to extract urban built-up areas. On the other hand, point of interest (POI) data and population migration data represent different attributes in urban space, which can both assist in modifying the deficiencies of NTL data from both static and dynamic spatial elements, respectively, so as to improve the extraction accuracy of urban built-up areas. Therefore, this study attempts to propose a feasible method to modify NTL data by fusing Baidu migration (BM) data and POI data thus accurately extracting urban built-up areas in Guangzhou. More accurate urban built-up areas are extracted using the method of U-net deep learning network. The maximum built-up area extracted from the study is 1103.45 km2, accounting for 95.21% of the total built-up area, and the recall rate is 0.8905, the precision rate is 0.8121, and the F1 score is 0.8321. The results of using POI data and BM data to modify NTL data to extract built-up areas have not been significantly improved due to the fact that the more data get fused, the more noise there would be, which would ultimately affect the results. This study analyzes the feasibility and insufficiency of using big data to modify NTL data through data fusion and feature extraction system, which has important theoretical and practical significance for future studies on urban built-up areas and urban development.
![](http://tile.loc.gov/image-services/iiif/public:gdcmassbookdig:orientallandoffr01free:orientallandoffr01free_0009/full/pct:100.0/0/default.jpg)
Land, Free Full-Text, long dong significado
![](https://www.mdpi.com/land/land-12-00409/article_deploy/html/images/land-12-00409-g003-550.jpg)
Land, Free Full-Text
![](https://www.mdpi.com/land/land-10-00950/article_deploy/html/images/land-10-00950-g001.png)
Land, Free Full-Text, chinese wall cpa 20
![](https://pbs.twimg.com/media/EDVjXsJUcAA9RpW.jpg:large)
Land, Free Full-Text, games awards 2022 hora chile
![](https://www.mdpi.com/land/land-12-00491/article_deploy/html/images/land-12-00491-g001.png)
Land, Free Full-Text
![](https://ars.els-cdn.com/content/image/1-s2.0-S0264837721000235-gr2.jpg)
Land Transfers Local News, 49% OFF
![](https://pub.mdpi-res.com/land/land-11-00298/article_deploy/html/images/land-11-00298-g003.png?1644990513)
Land, Free Full-Text
![](https://i.etsystatic.com/24355673/r/il/ed5533/3957109045/il_fullxfull.3957109045_hghu.jpg)
Land, Free Full-Text, chinese wall cpa 20
![](https://www.mdpi.com/land/land-09-00489/article_deploy/html/images/land-09-00489-g001.png)
Samsung Brings Galaxy to More People: Introducing Galaxy S10 Lite
![](https://pub.mdpi-res.com/land/land-11-00956/article_deploy/html/images/land-11-00956-g001-550.jpg?1656571851)
Land, Free Full-Text, ip grabber meaning
![](https://www.tandfonline.com/cms/asset/6c4ddc60-fbc8-4048-91fd-0b7c2c977665/cppr_a_1905991_f0001_oc.jpg)
Land Free Full-Text Form And Structure Of The Knowledge, 53% OFF
![](https://www.mdpi.com/land/land-11-00095/article_deploy/html/images/land-11-00095-g001-550.jpg)
Land, Free Full-Text, mapa king legacy level
![](https://pub.mdpi-res.com/land/land-09-00094/article_deploy/html/images/land-09-00094-g001.png?1585817153)
Beyond The Urban Fringe Land Use Issues Of Nonmetropolitan America
Built Up Ice in Water Against Piling in Idaho Stock Photo - Image
Calcium Deposits on Teeth: Causes, Treatment, and Prevention
EU Buildings Climate Tracker: Urgency to close the buildings
Closed-Cell Foam Tubing - Built Up Handle for Utensils on Sale
- CenturyX Toddler Baby Girls Floral Silk Pajamas Short Sleeve Button-Up Top Shorts Summer 2PC Flowers Satin Pajamas Set
- SWAG - Cereal Aisle BOXer: Mini Wheats – SWAG Boxers
- Brass 51 Pieces Dinner Set at Rs 19000/set, Brass Dinner Set in Moradabad
- Grammy Winner Tamela Mann drops a new album 'Overcomer' (AUDIO + VIDEO)
- Red Eared Turtle Shell
- 4-inch with 5/8-inch Radius Satin-Nickel Adjustable Spring Hinge (1-pc)