Round 1

Reviewer 1 Report

Qun et al. presented a comprehensive review on the development of snapshot multispectral imaging technology based on bionic compound eyes. The review is well organized and it will be beneficial for the readers.  This review can be accepted for publication as is format.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

In this manuscript, the Authors analyzed the advantages of multispectral imaging over hyperspectral imaging in real-time spectral imaging and the advantages and disadvantages of snapshot spectral imaging and other spectral imaging technologies. 

From my point of view, the manuscript is interesting and can attract the interest of many scientists working with such systems. However, the manuscript requires careful editing as there are some minor typos and other flaws.

1) All tables should be carefully edited as the versions presented in the manuscript are unacceptable.

2) Figures 22, 32, 33, 36 are illegible and should be corrected.

3) Captions of the tables should be careful edited. 

 

Moreover, extensive editing of English language and style required.

Author Response

Response Letter

Dear reviewer:

Hello, thank you for taking time out of your busy schedule to review my article and put forward valuable suggestions for revision, I would like to express my heartfelt thanks to you and the teachers in the editorial department! I modified the article according to the opinions of the three reviewers, and marked the modified content in red in the original text. The revised content is explained as follows:

Reviewer 2：

Question 1：All tables should be carefully edited as the versions presented in the manuscript are unacceptable.

Answer：Thanks to the correction,  all tables have been edited again, thank you!

Question 2：Figures 22, 32, 33, 36 are illegible and should be corrected.

Answer：Thanks for the correction of the judges. In view of the illegibility of the pictures, the above pictures are replaced as follows:

Modify Figure 22 in the previous text, corresponding to Figure 23 in the revised text, and replace the above picture with:：

Modify Figure 32 in the previous text, corresponding to Figure 33 in the revised text, and replace the above picture with：

 

Modify Figure 33 in the previous text, corresponding to Figure 34 in the revised text, and replace the above picture with：

 

Modify Figure 36 in the previous text, corresponding to Figure 37 in the revised text, and replace the above picture with：

Question 3：Captions of the tables should be careful edited.

Answer：The revised description has been marked in red, as shown in the original text.

In addition to the comments of the above review experts, I have revised the format of the article, Some sentence patterns, pictures, references, typesetting and other problems have been corrected, which do not affect the content of the full text.

The above is the explanation of my revision according to the comments of three reviewers. If there are still problems, I hope you and the experts continue to correct!

Finally, I wish you and all the experts good health and smooth work!

Song Yanfeng

January 29, 2023

Author Response File: Author Response.pdf

Reviewer 3 Report

The article is completely unclear to me. This is due, firstly, to a very large number of grammatical errors. In addition, in a review article, it should be clearly describe what a given group of researchers did, what a given stage of their work consisted of - otherwise, everything seems unclear and only reading the original article can provide a proper explanation.
Here is a list of noted imperfections, gathered from the first 10 pages:

Line 20: the full definition of the acronym TOMBO should be given here

Line 32: I don’t agree; the multi-spectral imaging has no better spectral resolution than the hyperspectral spectroscopy; I would say the multi-spectral analysis has still very effective resolution

Line 67: the sentence begins with “And” – correct please.

Line 111: “multi-type” is not precise term – please, provide more explanatory sentences (1 or 2) about this issue.

Line 119: “Planar compound eye multispectral snapshot imaging system, as a new photoelectric imaging system” – it sounds like you refer to older solution, writing about the new system. What was the older solution? Please, clarify.

Line 147: “The other is to add…” – gramma error; correct

Line 196: what is the difference between image processing technology and computational imaging technology? Is it?

Line 220: providing the name of the given company you mention a country – it does not sounds good: Advanced Microoptic Systems 220 (AMS) of Germany; maybe better from Germany

Line 226: please provide the name of the company or university in “The CMOS image sensor from Austria micro systems”; Micro Systems? Is it company?

Line 231: this sentence is for correction/is not grammatically proper: “It should be noted that the interference filter array was not used in the experimental verification, but CVI Laser Corp of the United States”. For me, it means, that against filters the American Laser was used.

Line 224: “Optical signal isolation device, for 21 stainless steel plate hot pressing molding” what it is? Completely not clear.

Line 254: “Through the experimental prototype, the author has carried out several static scene 254 experiments to verify”. To verify what?

Line 257: “Fig.15 shows the RGB color image converted by spectral image.” How converted?

 

Author Response

Response Letter

Dear reviewer:

Hello, thank you for taking time out of your busy schedule to review my article and put forward valuable suggestions for revision, I would like to express my heartfelt thanks to you and the teachers in the editorial department! I modified the article according to the opinions of the three reviewers, and marked the modified content in red in the original text. The revised content is explained as follows:

Reviewer 3：

Question 1：Line 20: the full definition of the acronym TOMBO should be given here.

Answer：Thanks for the correction, the article has carried out the corresponding content of the supplement, the details are as follows：

thin observation module by bound optics(TOMBO)

Question 2：Line 32: I don’t agree; the multi-spectral imaging has no better spectral resolution than the hyperspectral spectroscopy; I would say the multi-spectral analysis has still very effective resolution.

Answer：Thanks for your correction. What this article means is that because of the small number of spectra and certain degree of freedom, multi-spectral imaging can obtain higher resolution, thus obtaining some corresponding advantages.

Question 3：Line 67: the sentence begins with “And” – correct please.

Answer：Thank you for your correction. Corresponding modifications have been made in the article.

Question 4：Line 111: “multi-type” is not precise term – please, provide more explanatory sentences (1 or 2) about this issue.

Answer：Thank you for your correction. After discussion and reflection, it is decided to replace " multi-type " with "polytype" in the original text and convert the sentence here into a more accurate expression.

Question 5：Line 119: “Planar compound eye multispectral snapshot imaging system, as a new photoelectric imaging system” – it sounds like you refer to older solution, writing about the new system. What was the older solution? Please, clarify.

Answer：Thank you for your correction. It is mainly emphasized here that the system is a new multi-spectral snapshot imaging system integrated with ACE. The statement is corrected and explained in the paper.

Question 6：Line 147: “The other is to add…” – gramma error; correct.

Answer：Thanks for your correction. The article has been revised accordingly.

Question 7：Line 196: what is the difference between image processing technology and computational imaging technology? Is it?

Answer：Thanks for your correction. The images obtained by TOMBO(Thin Observation Module by Bound Optics） usually need to go through some image processing algorithms, so as to obtain high-resolution images and so on. And some scholars see TOMBO as an effective platform for computational imaging. So they're described separately here. The article has been modified accordingly. thank you.

Question 8：Line 220: providing the name of the given company you mention a country – it does not sounds good: Advanced Microoptic Systems 220 (AMS) of Germany; maybe better from Germany.

Answer：Thanks for your correction. In this paper, the description of this part is modified, and only the model and main index parameters of MLA are expressed. Thank you

Question 9：Line 226: please provide the name of the company or university in “The CMOS image sensor from Austria micro systems”; Micro Systems? Is it company?

Answer：Thanks for your correction. The description of this part is modified in the paper, and only the main index parameters of the sensor are expressed, thank you

Question 10：Line 231: this sentence is for correction/is not grammatically proper: “It should be noted that the interference filter array was not used in the experimental verification, but CVI Laser Corp of the United States”. For me, it means, that against filters the American Laser was used.

Answer：Thank you for your correction. This part has been corrected in the article. Thank you.

Question 11：Line 224: “Optical signal isolation device, for 21 stainless steel plate hot pressing molding” what it is? Completely not clear.

Answer：The optical signal isolation device consists of 21 square hole arrays made by etching process. The inner surface of the square hole array is coated with an anti-reflection film. The wall thickness and height are about 50μm and 1050μm, respectively. The hole spacing is 500μm, which matches the microlens spacing. Mainly prevent optical signal crosstalk between channels. This content is added in the article.

Question 12：Line 254: “Through the experimental prototype, the author has carried out several static scene 254 experiments to verify”. To verify what?

Answer：The author proposes an improved pixel rearrangement method. In order to verify the main performance and effect of this method, corresponding experiments are carried out. The content of this part is supplemented in the article.

Question 13：Line 257: “Fig.15 shows the RGB color image converted by spectral image.” How converted?

Answer：The method expression and flow chart of pixel rearrangement proposed by the original author are added in the paper. The obtained spectral RGB image is mainly used for the corresponding supplementary explanation. According to the original description: the RGB color image, which is obtained by applying spectral-RGB conversion to the seven spectral images。

In addition to the comments of the above review experts, I have revised the format of the article, Some sentence patterns, pictures, references, typesetting and other problems have been corrected, which do not affect the content of the full text.

The above is the explanation of my revision according to the comments of three reviewers. If there are still problems, I hope you and the experts continue to correct!

Finally, I wish you and all the experts good health and smooth work!

Song Yanfeng

January 29, 2023

Author Response File: Author Response.pdf

Round 2

Reviewer 2 Report

The Authors make sufficient changes to the manuscript.

Reviewer 3 Report

Authors made all the necessary corrections to errors and unclarities I found in the previous version. In the actual form all looks as well written engineering paper.