HUO Shaofeng, GU Xingfa, ZHAN Yulin, ZHANG Wenhao. Extracting Building Plot Ratio with Shadow of ZY-3 Image[J]. Geomatics and Information Science of Wuhan University, 2018, 43(3): 444-450. DOI: 10.13203/j.whugis20150191
Citation: HUO Shaofeng, GU Xingfa, ZHAN Yulin, ZHANG Wenhao. Extracting Building Plot Ratio with Shadow of ZY-3 Image[J]. Geomatics and Information Science of Wuhan University, 2018, 43(3): 444-450. DOI: 10.13203/j.whugis20150191

Extracting Building Plot Ratio with Shadow of ZY-3 Image

Funds: 

The National Natural Science Foundation of China 41371416

The National Natural Science Foundation of China 41471310

Major Special Project: the China High-Resolution Earth Observation System Y4D00100GF

the Civil Space "12th Five-Year" Project Y1K00200KJ

More Information
  • Author Bio:

    HUO Shaofeng, master, specializes in standard quantitative remote sensing inversion.E-mail:huosf@radi.ac.cn

  • Corresponding author:

    ZHAN Yulin, associate professor. E-mail: zhanyl@radi.ac.cn

  • Received Date: May 16, 2015
  • Published Date: March 04, 2018
  • The plot ratio is an important index of urban land development intensity, how to estimate the plot ratio quickly and accurately has been a hot issue. Building height is the base of extracting the plot ratio, according to traditional height extracting based on the shadow, introduced a height correct model and improved the calculation accuracy effectively. Based on ZY-3 image, extracted the shadow features by using object-oriented technology, calculated the building height through the height correct model, got the floor number and extracted the plot ratio combined with the area of the buildings and residential district. Finally, the validating result based on the floor number shows that the accuracy of estimating floor-number has increased from 90.213% to 92.375% after the height correct model, which has demonstrated the validity and necessity of this model and the prospecting applications of ZY-3 image in extracting the plot ratio.
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