55 Questions 32 Answers 0 Followers
Questions related from Vladimir Farber
I am not familiar with Python(but I want to learn it), for image processing purposes I am use MATLAB and it is usually enough for me. For which image processing purposes Python can have advantage...
26 October 2018 5,309 18 View
There are many fields where light field can be utilized. For example it is utilized in microscopy [1] and for vision based robot control [2]. Which additional applications do you know? Thank you...
06 March 2018 2,625 3 View
I am not familiar with C++(but I want to learn it), for image processing purposes I am use MATLAB and it is usually enough for me. For whih image processing purposes C++ can have advantage over...
19 June 2017 9,272 9 View
From the literature absorption of single mono layer of graphene is about 2%, when using the calculation based on model of Beer-Lambert for gold or silver the obtained result is also about 2%. From...
18 August 2016 4,829 4 View
Does circular polarized light with same screw like that of the chiral material always reflected or only under specific condition? What is the Jones matrix describing propagation through chiral...
14 July 2016 8,777 2 View
What is the dependence of the viscosity, dielectric constants and elastic constants of BL036 and E7 Liquid Crystal on the temperature and frequency. Thank you in advance!
06 May 2016 4,791 4 View
As a scientists, sometimes we need to make posters for some presentations. Can somebody give relevant recommendations and references, how to make good poster? And how perform a good poster...
20 November 2015 5,553 11 View
I need describe the light propagation through lens which is slightly rotated around y axis (as shown in figure below), can somebody give relevant references and explanations how I can do that?...
21 March 2015 4,227 4 View
In my work I mainly use two of these concepts. Do you know other approaches?Relevant references are welcome. Thank you in advance!
12 March 2015 2,793 5 View
How does nonlinearity change the width of the pulse (expand or shrink) in time domain, and how does the dispersion change the width of the pulse (expand or shrink) in time domain? Thank you in...
25 February 2015 3,600 11 View
My research based on Integral Imaging, but, until now, I mainly dealt with the theory. For my practical experiments I need the lenses array. Can somebody recommend companies that produce the...
20 February 2015 468 5 View
I have power meter of the Ophir photonics, if I understand correct, it is based on the photon counting : I=SP where I is the electrical current, S is the responsivity, P is the power of the...
03 February 2015 8,669 2 View
I want better understand the physics of this phenomenon and develop relevant intuition. If the linear and nonlinear susceptibility parameters depend on the polarization state (Linear or circular),...
31 January 2015 9,384 4 View
I performed some simple experiment with the microscope with different objectives(each one has different N.A.), and now I try understand physical size of the field of view and can't understand if...
28 January 2015 7,724 10 View
What is the value of the rotational viscousity of (Merck) E44 Liquid Crystal? How E44 depends on the voltage? I need to know these parameters for the experiment. Thank you in advance!
26 January 2015 6,935 4 View
If I have two layer thin film, for example the first layer is Si and the second layer is some other layer and I want change following parameters of this second layer :1) Real part of the...
25 January 2015 6,955 5 View
I want understand does tilt aberration cause (or may cause) the Coma aberration under certain conditions. Thank you in advance!
23 January 2015 6,802 6 View
I want better understand this problem, and understand how I can compare simulation results with real data.
17 January 2015 6,758 5 View
The main part of the information that we get is absorbed using our eyes, what happens with our memory when performance of our eyes is reduced? Is there any research performed to check the...
13 January 2015 2,867 7 View
I want to better understand physics behind processes connecting scattering with the refractive index of the material. Can somebody explain this relation in simple terms? Thank you in advance!
10 January 2015 8,269 7 View
If I have polarized laser beam. How I can perform de-polarization of it. Or that is already not possible? Thank you in advance!
07 January 2015 5,569 5 View
Can somebody explain meaning of this term in simple terms and give equation describing it? Thank you in advance!
06 January 2015 9,476 4 View
In lab experiments I was needed to perform surface plasmon excitation. Surface plasmon excitation can be performed only with TM polarization. So it is good experiment to check if a laser has TE or...
05 January 2015 6,624 11 View
I want better understand this subject. I have a few questions about it? In which cases it is preferable to use matrices of Jones, and in which cases it is preferable to use matrices of Stoces to...
04 January 2015 3,557 5 View
I want to know, if I have additional options to represent light propagation. Mainly to describe imaging process. Relevant references are welcome. Thank you in advance!
02 January 2015 1,536 13 View
Since in the near future I will be a laboratory instructor, and in this lab there are many experiments which are not related to my research field, therefore I am experiencing difficulties to...
29 December 2014 6,849 10 View
Can somebody explain why laser emits polarized light? I want to understand what is the physical reason for this. Or there is polarizer inside? Why some lasers emit linearly polarized light, and...
29 December 2014 7,064 22 View
In comparison to the other 3D methods, why you will prefer to do your research in Integral Imaging? And why not? I want better understand the limitations and perspectives of this method. Thank you...
29 December 2014 7,045 1 View
Light field (plenoptic) imaging is important part of may research, so I would like to expand knowledge in this field. Thank you in advance!
26 December 2014 3,017 1 View
If I need perform some experiment, where I need to use beam splitter, but I don't have it. Is it possible to construct something what can be used as beam splitter?
24 December 2014 2,398 8 View
I am mainly interested in the understanding the techniques used for this and in algorithms for recovering the occluded objects from the acquired data. Can somebody recommend relevant references?...
22 December 2014 6,802 4 View
I want better understand behavior and physics of the refractive index of the different materials? In which range of the wavelengths, we expect to see abnormal behavior of the dispersion in the...
21 December 2014 647 3 View
If we use the lenses array for the imaging, the small images the more distant from the center are more suffer from the coma aberration. How I can reduce this effect? Thank you in advance!
20 December 2014 2,995 4 View
Since I have a little understanding of nonlinear optical processes, then I want to develop some expertise about them. My knowledge about nonlinear optical processes is mainly based on the book...
19 December 2014 7,570 6 View
I would like to expand knowledge in this field. Mainly I'm interested in the applications of the Compressed Sensing in the optics. Thank you in advance!
15 December 2014 8,718 4 View
If it is possible, can anyone suggest an experiment which can allow understanding if laser is based on 3 level or 4 energy level model? For example, for LASER Nd:YVO4. Thank you in advance.
14 December 2014 5,602 6 View
Since compressed sensing is developing area, then, there is growing number of algorithms and I would not want to miss the best one (as of today). Relevant references and links on the MATLAB code...
12 December 2014 6,966 3 View
If we want to compare the Curvelet transform, Wavelet transform and Fourier transform, in which cases it is preferable to use the each one of them? Thank you in advance!
11 December 2014 8,417 9 View
I would like to know what is being done in this area to understand if that can be relevant to my research.Thank you in advance!
11 December 2014 2,247 3 View
What purpose does the Noiselet transform serve in image processing? If we want to compare the Noiselet transform, the Curvelet transform and Wavelet transform in which cases it is preferable to...
11 December 2014 2,993 1 View
Can somebody explain in the simple terms the physical meaning of the MTF?How does a turbulence in the air (atmosphere) affects on the MTF?How does the optical aberrations affect on the MTF?
09 December 2014 2,487 6 View
Linear canonical transformation is the useful tool for the light propagation description. When we prefer to use it for light propagation description? And when we prefer not to use it?When it is...
08 December 2014 9,780 1 View
I interested in the use of mnemonic techniques in the physics in general and in optics in particular. Thank you in advance.
29 November 2014 6,009 3 View
I want to know it in order to perform the lab experiment. Can anyone give a simple explanation and recommend a relevant reference or link. As the laboratory instructor I also interested to perform...
25 November 2014 5,025 2 View
25 November 2014 5,744 7 View
What alternative can you suggest and why you think that this alternative is better?
24 November 2014 2,954 10 View
Hyperspectral imaging plays important role in my research, but my knowledges in this theme mainly based on a set of articles. I want to expand and orgonize my knowledge in this field. So, which...
13 November 2014 7,800 3 View
I have a few clarifying questions, that I want to ask: 1)Which exactly aberrations can be measured by Hartmann-Shack sensor? 2)If there are differences between aberrations which can be measured if...
12 November 2014 5,851 13 View
In one of the courses I met the Hartmann-Shack sensor, but I want to extend the knowledge about it in order to understand whether it can be used in my research. For which aims the the...
11 November 2014 3,205 3 View
I need to do course in nonlinear optics. Material of the course based on "Nonlinear optics" of Boyd 2ed. and all equations in CGS units. Can anyone recomend other books on nonlinear optics in CGS...
08 November 2014 8,848 11 View
For performing correct simulation in MATLAB, which signal will represent a more correct version of acquired data: Do I need to add noise before quantization of the signal? Do I need to add noise...
20 October 2014 6,880 8 View
For arranging my references in papers and in other documents I use in reference manager RefWorks. But sometimes, after inserting some additional reference, it suddenly duplicate indexes. For...
16 October 2014 4,573 2 View
I'm mainly interested to understand in which fields integration of this kind is already used and how it can be performed, that is how we can simultaneously acquire the hyperspectral and 3D...
06 October 2014 230 7 View
For example, if I have in matlab matrix of form [A*B;A*C;A*D] how I can check if it represents the result of Kronecker product?
29 September 2014 8,925 5 View
In may calculations I used the spot size calculated in the Zemax as a resolution limit. Does it is really good criteria for this if the influence of aberrations must be considered? Can somebody...
17 September 2014 6,660 7 View
