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# History of Photography - Science topic

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I address this dilemma to historians and anthropologists. Is it or is it not beneficial to colorize archival photographs using artificial intelligence? When I first discovered this possibility it all seemed beneficial, but after reading more I also saw ethical challenges. I am interested in the perspective of historians and anthropologists, and I am looking for further literature recommendations.
Sometimes it may be useful to use the method of coloring .. but it does not necessarily have to be successful in all cases
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I have a graph relating the applied wavelength of light and photo current. How can i find out the photoresponsivity.
You need to know the spectral irradiance which is the incident irradiation power per wavelength interval at the different wavelength of the measurement range.
Assuming this power is P(lambda) watt/ um ,
Then you obtain the responsivity by dividing the total current to the total power.
The total current can be obtained by integrating the spectral current curve which you got and the total irradiance= Integral P(lambda) dlmbda across the whole measuring band.
Best wishes
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Yes, the 21st century can be called the age of photography, graphics, image, etc. because this form of transmission begins to dominate the Internet. In addition, photography can be cultivated and developed professionally or as a hobby, as art, i.e. artistically.
In my opinion, photography can be an art if it is practiced with passion etc. Sometimes a photo that qualifies for the artistic picture of the year is created by chance, like a unique impression captured in light photography.
Impression captured in a complete photograph, accidentally and unchangeable.
Another time, such an exceptional artistic picture arises after many weeks or months of preparation, after many rehearsals, in a unique place, which is not easy to reach and is a big undertaking.
It seems to me that it is similar to many other fields of art.
In view of the above, the current question is: Do you think photography can be art?
Yes, sure. The photo speaks deeper than a lot of words.
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How to analyze protein samples in traditional 2D Gel without dye?
we can use ICCD camera .
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Dear collegues! I'm interested in the following questions: 1) why the floor of the pulp chamber is a dark? 2) Normal temperature of the vital pulp? It would be perfect if you name the researchers or publications. T
Great! Thank you so much!!!
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In 2018 we let us have GF2018 and where?
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i am trying to first immersed my membrane in water and then trying to placed the oil droplet to find underwater oleophobicity but as i placed the oil, it spreads
Thanks Miral.
Yes i am using a goniometer to measure the contact angles. But Now what i found is that, to measure underwater oil contact angle i can use an oil which is heavier than water so it will sink in water and also will not wet the membrane underwater if it it hydrophilic and underwater oleophobic
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I want to identify plastic, glass and cold drink tin bottles automatically by an embedded device.
Can any provide me about the any sensor or strategy for detecting items made from glass, plastic and cold drink tin.
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Im  am currently conduct a research on reliability of sensibility test :thermal and electric pulp test(EPT).
Try to use The sci-hub motor research, it Will Give u thé full text of majority of abstracts.. : www.sci-hub.io
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Now a days people claim that many problems can be solved using remote sensing technique. Some of the information claimed to be possible are below 10 to 100 metres below ground level. For example; depth to water table; water quality; bore well locations; etc. Some of these claims are so expressive that it makes one to believe that remote sensing is a replacement to field investigations, but it is a supplement or compliment to field investigations, in my opinion. Though we understand that remote sensing is based on reflectance of radiation from the earth surface, through which technique or images these depth related information can be obtained ? Also what is the maximum depth to which remote sensing technique can be applied AND what are the type of depth related information can be gathered?
From some of the answers it appears that my question has been misread. I am not at all questioning the utility or usefulness of remote sensing technique, as far as spatial information is concerned. I am only asking the extent of its application with reference to "DEPTH" below ground level (like 50 cm; 100cm; etc); the information one can decipher (temperature, moisture, etc); and also the type of data sets one has to refer.
Kindly do not compare / mix up with geophysical techniques, which may confuse the readers. Thank you.
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Dear All,
May I know the best way to do make a simple light sheet for a sample of 1cm x 1cm ?
I have a camera with telelens, so the way to obtain the image might not be a problem for me. But I am not so sure how to get the light sheet plane (as in attachment).

I have already tried to use a lamp and small slit from hard paper to put in front of the lamp. It is to allow only the plane of light to pass through.
But they are a lot of problems
(e.g.  (1) the light plane does not bright enough to pass through my sample and give me a clear image,
(2) the light plane is actually come out in the same shape of light source (my light source does not have a perfect linear alignment)).
May I have your recommendations in this?
(1) Which item could be suitable for a light source for this application? (possibly provide Item No. and Brand of the product)
(2) Any recommendation for lens ?, can I use the normal lens
(3) If you know any company which is able to provide simple setup for this, but it is not too expensive, it will be very appreciated.
Best Regards,
Yannapol S.
Dear Sir,
it would be best to use a laser, extend the beam diameter and then focuse with a (possibly, but not necessarily achromatic) cylindrical lens. The laser need not have high power; about 1 mW would probably be sufficient.
Kind regards
Herbert Schneckenburger
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Hello. Our lab is looking to do similar non-invasive monitoring of plant tissue culture medium. Could you tell me what kind of sensors you plan on using?
Thank you.
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Dear Experts,
Is the pic number1 and Pic number2 same to Tacca chantrieri
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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 the MATLAB?
Every language have advantages and disadvantages. In the case of C++ and Mathlab, I can say that Matlab is some times more easy to start test some ideas, bu  when you want to make a real product or software, you translate you Mathlab test to a more powerful language, like C++. Mathlab is used mostly for fast prototype and when you are sure of your idea you can spend more time writing a more complex and efficient program. So, for scientific porpouses, Mathlab is a beatiful language as C++ too. If you work with image processing, there are some librarys for C++ that can help you a lot, like OpenCV, CImg (for handle images formats and operations), ImageMagic, and others.
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I have 2 TEM images and i want to fine it's article.
@nan an
thanks .but  google's guess is incorrect.
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Hi all,
I have a query. Is it possible to make fine holes in cylindrical pipes about 10 microns apart. The holes need to be separated by 10 microns measured from circumference. The diameter is not a major concern. What are the techniques that can be used?
Thank you very much for the help!
Aiming at such small hole diameters, you seemingly would be restricted to trying glass microdrilling using (picosecond) laser technology, which is said to be able to drill parallel-sided holes of diameter down to about 10 μm for 1-mm-thick glass plates:
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For fieldwork this year. Brand with a UK supplier would be useful but not essential.
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Hello friends !!
I have a problem in understanding of the difference between those technologies, may you help me. I am looking for videos if you can.
Thank you Christian !!
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Need some basic things like autoclave, fumehood, centrifuge, PCR (maybe), etc. Setting up a lab at a brewery, so don't need state-of-the-art stuff just reliable equipment for doing quality control.
Ah you guys are dicks
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Hello,
I face the following problem – I have assembled an prototype of test site on a universal breadboard [1] and then introduced some changes. Now there is a short between digital ground and supply voltage, causing 7805 stabiliser to cut-off the +5 V output.
What is the best way to find which net is causing the short?
Attachments:
[1] Test site mounted on breadboard (refer to image)
The cause of the problem was more trivial – I accidentally shorted one of digital inputs to ground, while for debugging I previously shorted it to a  digital supply and did not remove this connection – thus the short.
Regards,
Michal.
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Actually I was wondering if my group was alone in considering this a problem. Amazingly people are still publishing articles using this method as a way of assessing humidity during sitting.
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temperature, humidity , air pressure indicators
Thank you Lewis
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If yes what the characteristics of the UAV you will use? I am asking you because we are going to mount some systems, during a second part of our project, for outdoor experiments.
Quadcopter equipped with cam and gps.
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The on going project is basically for which area or part of India
This project study area is in the part of  Jharkhand state.
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I am working with MDAMB134VI. I need some images and cell specific markers of this cell line for reference. If someone have it please refer or suggest.
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I am looking for current challenges in the "Network Steganography", particularly in the upper layers, Network Layer and Transport layer.
Does anybody know the current issues with Network Steganography? Any material, insight, or personal/expert opinion would be much appreciated before diving into the details.
Thank you so much in advance.
Dear Anatol Badach and Mina Samman Younan,
Thank you so much.
It was really appreciated.
Best regards,
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daylight measuring tool and how best to use them and maybe cost
Hello,
The most accurate algorithm for evaluating the daylighting in the building environment that I know is through the RADIANCE. But it's also the most complex. Some software that uses it is the Daysim and Diva-for-Rhino plug-in. Some researchers that work with this area are Nabil A., Reinhart C. F, Mardaljevic J., Jakubiec A., Fitz A.
Hope that this information helps you,
Caroline Santesso.
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If yes what the characteristics of the UAV you will use? I am asking you because we are going to mount some systems, during a second part of our project, for outdoor experiments.
Last year I designed a UAV (as shown in the attached picture, without its winglets), which I intend to use to test my hybrid setup. I designed it to have a large cargo bay, so that there is plenty of room for experimental payload.
To obtain the most accurate aerodynamic model of the aircraft I plan to perform full-scale wind tunnel experiments later this summer.
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How can I obtain automated measurements from an image (i.e., crack length) using computer software, any recommendations?
Attached herein as some of the in-depth study pertaining to the mentioned issues, based on the difference places.
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On the specific direction of image processing
I am a student，I want to do some research about image processing,but I do not have good idea.Image processing is so widely concerning it's direction .So I hope a constructive advice，thank your
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Dear colleagues,
I would appreciate any advice on how to properly photograph yellow-painted luminescent sand particles (in order to detect sand movement in the laboratory tank). I have Panasonic Lumix camera and I have done few small-scaled photos. Now I want to filter the background blue light from the UV-lamp. What kind of yellow filter do I need? Which one is better? Is it possible to by one in the regular shop or do I need to get some special equipment?
Thanks,
Andrei
Dear Andrei,
what do you need from the photo finally: just contrast image, or nice picture, of precize measurement of the length of those tracks?
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Although I have collected some data on that. NMAD for mosquito control aerosol, body spray and air freshener are 0.7 to 3 micron, 0.3 to 0.4 micron, and less than 0.5 microns respectively. But I am not sure on that. So, can anybody provide me the exact data with references?
Sir, this is not exactly what you are looking for, but this might help...
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i don't have an idea how to detect the underground water level.
Thank you everyone for your guidance.
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I would like to know what are the modern process techniques for the production of Cultured Marbles and Solid surfaces like Corian.
Shukran Jazakmullah Khair brother, thanks for this important info.
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I need to conduct an image processing analysis in a research, but at the moment, I do not need details and just a general idea about displacements will be sufficient. So, I am looking for a simple image processing software and method which does not need advanced cameras and setups. Does anybody have an idea about the Image processing on images taken by conventional imaging devices? What about the software?
ImageJ or Fiji is quite easy to use and does not require coding just knowledge of the algorithms and use the Java plugins
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Can you shed more light on the project?
Pleasure.
Best wishes,
Sonia York-Pryce
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Hi Folks
Several years ago I bought a TRAC from Mike (?) @ 3rd wave (?) to use for my dissertation research.  Since starting my scientist position at BNL I have been trying to order another for my RS lab.  However After more than a year of trying to find out how to get another I haven't heard back.  Is it possible to still buy one of these devices, or get the specs to build one?  I ask as it would be great to collect this data with HemiPhotos at our research sites.
Also, as for HemiPhoto gear, I used to use the DHP recommended Nikon camera but wonder if there is a suggestion for new hardware?
Thanks!
Shawn
Hi Shawn
For the camera  suggestion, there are some many good digital camera now. Ideally if you want a fulll hemispherical view, you can look for camera with a 35mm sensors, but if  cropped hemispherical view is okay, most SLR will work. As for lenses, make sure you get a good one and not all are full 180 deg.
I still use my old Nikon D90 with a Sigma 8mm F/3.5 EX DG lens.
regards
Sylvain
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I am going to be using a very basic BRUV (baited remote underwater video) setup for my upcoming masters degree. Is there free software about that will allow me to upload the video for it to measure fish length?
Does your BRUV setup have stereo cameras? If so you need to know how to calibrate them also before you can use them for length estimates. I am not aware of any free programs to analyse stereo BRUVs though. Your best bet would be to find a extra co-author or collaborator who has access to one of the paid programs i.e. Event Measure. You would also need access to CAL and a calibration cube.
You could try some cheap workarounds though...insert scale bars into your footage on the bait arm or lasers with a know calibrated distance between them. You will get way way way less chances to get accurate estimates but it might still be enough.  Especially if you add a second camera pointing down and an extra scale or lasers to get a second angle for measurements. Just be aware of the drawbacks that have been cited in the literature so you can address them. Happy to talk more about BRUVs :)
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Hi everyone,
Does anyone know where to find small thin (around max 6 cm thick total) heating stages. I want to measure real time depth recovery under my microscope but the space between the lens and actual space is too small to put the regular hot plates.
Thanks.
Hi,
Thanks for your answer. I tried, but since I am measuring microne scale, due to the vibration caused by electrical heating, my microscope images get blurred.
Thanks.
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I would appreciate if anyone can share new methods for analyzing the data from microscope?
You are right, actually my question is not specific, the reason is that I want to have an idea of available analyzing programs for quantifying tissues in general.
Thank you very much.
Fahim
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We are developing ways to compare before and after photos in leg vein treatments. We have been using two iPads and later the Lightroom software from Adobe. The quantification is made with other doctors looking at both photos and telling if here is clearing of 0-25%, 25-50%, 50-70% or 75-100%. I've seen some Softwares that calculate automatically the color change but as the leg is a tubular structure, a tiny little change of angle and/or light will affect the measure. What is your opinion? I really believe that the scoring by human eyes may be more reliable and cost effective.
Hello Roberto,
i would suggest to have a fixed photo setup (e.g. camera position/distance/lighting) as well as trying to find landmarks on a leg (like moles or birthmarks). A pole in fixed position with regard to the camera and maybe 3 adjustable arms attached to it, which can be used to pinpoint three distinctive landmarks on the leg (in a reproducible fashion), might be a way to more reliably get comparable images. If this works well enough, you then simply could transform the before and after images into greyscale and subtract the images from each other. All similar areas will more or less vanish in the resulting image and leaving you with only what was different. Afterwards, applying a threshold for a certain greyscale (e.g. everything > then a certain grey value is a definitive change) will leave you with a defined area that you can measure (or pixel-count). We did similar things for tracing liquid spread on structured surfaces with good results. Just an idea :)
Best regards and much success,
Florian
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Very small, small, medium, large, very large bars based on area
I know of no specific size classification of bars to suggest, as the size would depend to some degree on stream type and size, gradient, sinuosity, sediment supply, geology, valley form, etc.  There are various types of bar features that relate to their channel position (point, side, traverse, in-channel bars), and function.  There are also differing features in tidal and delta systems.  In a gully or other actively degrading system, the bars are often limited, while in braided streams and aggrading systems can effect most of the channel and sometimes the valley surface.  Clean water systems such as below dams, may have truncated or abandoned bars from erosion and degradation.  The types of bar substrates are sometimes described from a particle size analysis, but if you are just interested in sand bars, this may not be as helpful.  .
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Is there any way to achieve micrometer resoluted temperature distribution, for example by an infrared detector attached to a microscope?
Dear Georg Pesch
It is possible to estimate the temperature from the ratio of Stokes and anti-Stokes bands in Raman spectroscopy. So if you would have a Raman microscope capable of measuring also anti-Stokes (i.e., with a suitable filter), then you should be able to get temperature information with the resolution of several microns. I would advise you to check related literature and see what are the limitations and also the accuracy of this method. I have no direct experience with such measurements, so I can´t provide you with all the necessary details.
Regards
Josef
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I need to mount my enthomological collection.
Hasta donde tengo conocimiento, en México ya no se comercializa el medio de Hoyer´s como tal. Si lo importas es seguro que no pasa aduana por la restricción que existe hacia el país por uno de sus compuestos.  Toma en cuenta que organismos quieres montar y posiblemente puedas utilizar otros medios. Espero te sirva esta información, Saludos
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I am looking for a material that resembles the characteristics of human skin, specifically the thermal characteristics of the surface.
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I would like use annular illumination with a LEDs ring illuminator or a optical fibers (a bundle) for an uniform (or relatively) of a surface (disk) of about few cm diameter?
Mihail,    Hot spot is harmful, when you want perfect uniformity.  In my experience of miscrospcope image photos, they have been always accompanied with this.  So, I recommend you diffuser dome.  It should be as uniform as in integrating sphere in principle.  But your intension is relatively uniform illumination, Thorlabs ring is not bad.   Regards, Shigeo
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I am using 3D anaglyph images of selected insects (and parts of their bodies) prepared on the basis of SEM micrographs. The idea is to present in quite easy and inexpensive way static images, that you can watch on your monitor screen, in your smartphone or in your book with the use of cheap anaglyph glasses, I am ready to share my experience/know your experience.
Thank you very much David. I will use your anaglyph calculator and let you know about the results.
Best regards. Bogdan
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