Application of a Hand-Held LiDAR Scanner for the Urban Cadastral Detail Survey in Digitized Cadastral Area of Taiwan Urban City

Round 1

Reviewer 1 Report

the text needs severe improvements. I can hardly understand the text. Please, contact an English speaker for help.

The paper can be divided into two papers. As result, the paper is too long
1) The first one is calibration. As far as I could understand, this step was already presented by one of the authors, [reference 1] the calibration method is not a contribution in this current paper. So, the extensive description here is not necessary. Maybe quoting the paper of [1] is enough. If it worked for [1], it should work here too.

2) the second part is related to the cadastral survey. In this part, the author should state clearly what is the desired accuracy. If we consider that the cartographic document is in a given scale (let's say 1:5.000) there is a specific expected accuracy. SO, with such values, it would be possible to evaluate if all the corrections introduced are necessary and if the resulting accuracy is acceptable. There is a need for some statistical tests to evaluate the results. The numerical comparisons are very simple: the mean value. Could you use a statistical test to support the conclusion?

In the introduction, please provide some information about the use of handheld devices and what accuracy do other studies report. So, you can discuss if your results are comparable or better than the literature.

Please write something about the contribution of the paper. what is new? why should a reader read it and what is the scientific contribution of the study?

In the current form, one can say that you used an available method to calibrate your handheld device and the well-known methods of SLAM to compute the location. So, one could say that is just an application. That is why the introduction needs improvements.

The cadastral survey part describes too many details and can be summarized to the main aspects of the survey. The accuracy evaluation. 

O send some notes on the PDF.

Comments for author File: Comments.pdf

Author Response

see the submitted file.

Author Response File: Author Response.doc

Reviewer 2 Report

in the attached PDF some revisions to the article are included as notes

Comments for author File: Comments.pdf

Author Response

See the submitted file.

Author Response File: Author Response.doc

Reviewer 3 Report

This article, seems to me, be correctly arranged, and clearly shows the applied method of data collection with a hand-held LiDAR scanner for detailed urban cadastral survey in the digitized cadastral area. In line 593 the literature is cited in another way. The article is quite long written with too many subtitles but clearly shows what was done. Perhaps it can be mentioned in the conclusion the future possibilities of using a handheld scanner to create a 3D cadaster, based on such controlled measured data.

Author Response

See the submitted file.

Author Response File: Author Response.doc