Urban Tree Classification Based on Object-Oriented Approach and Random Forest Algorithm Using Unmanned Aerial Vehicle (UAV) Multispectral Imagery
, Jian Zhang 1, Shijie Guo 1, Zhangxi Ye 1, Hui Deng 2, Xiaolong Hou 1,3,4 and Houxi Zhang 1,3,4,*Round 1
Reviewer 1 Report
Find my comments attached.
Comments for author File: 
Comments.pdf
Author Response
Dear reviewer：
We have revised your comments, the revisions are in the attachment (response to reviewer 1).
Author Response File: Author Response.pdf
Reviewer 2 Report
Reviewer’s Report on the manuscript entitled:
Urban Trees Classification Based on Object-oriented Approach and Random Forest Algorithm Using Unmanned Aerial Vehicle (UAV) Multispectral Imagery
The authors proposed an urban tree identification method by combining an object-oriented approach and a random forest algorithm using UAV multispectral images. The manuscript is well-written, and the topic and results are interesting. Please see below my comments for further improvement.
Line 68. Please add here: Recently the UAV technology has been used for various remote sensing applications such as agriculture, hydrology, and ground deformation monitoring. And add the following three articles:
https://doi.org/10.3390/rs14051239
https://doi.org/10.3390/hydrology6020029
https://doi.org/10.3390/geosciences10060245
Line 69, etc. All the acronyms must be defined the first time they appear in the manuscript. Please also add an acronym table at the end of the manuscript listing all the acronyms used in the manuscript.
Line 248. At the end of the sentence please write: “…, respectively.”
The quality of Figure 3 can be improved (minimum 300dpi resolution with white background).
The Artificial Neural Network (ANN) model has also shown promise for UAV data processing. For example, you may refer to the first article that I suggested above. Please mention this in the discussion section.
Please use past verbs in the Conclusion section. For example in line 420 say: The results showed….performed ….etc.
Thank you for your contribution
Regards,
Author Response
Dear reviewer：
We have revised your comments, the revisions are in the attachment (response to reviewer 2).
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Authors have improved the manuscript by adding missing information.
Therefore, I have no further comments and I accept the manuscript in its current form.
