## c # – How to upload an image on the server in the asp.net kernel?

My task is to create a model and a database for web API and CRUD purposes, one of the properties of the model is the photo of a car. While coding data for database migration, how to set that property as a photo and save a photo path to the SQL database. Later, I have to manipulate with the postman to do CRUD and API manipulations with that photo and also the other properties of that car. What is the easiest solution? I have found some information about IFormFile and byte but I am not sure how to do it correctly. I'm using asp.net's 2.2 kernel. Thank you!

## post processing: How can I "subtract" a layer from an image in photoshop?

Total beginner here who does not even know the basic terminology for photo editing, so I ask for help here and I do not look for it in Google.

I have a picture of the moon, but it's blue. I have another image that is also blue. Both are raw data from a camera mounted on a telescope. I have another "zero" image where the telescope does not point to any particular place, which is meant to be used to remove the grain from the image.

But I have no idea how to do any of these things. How can I subtract the blue and flat image from the Moon image? And I guess the process is the same to remove the grain? I do not know.

## Topology gt.geometric – Order of separation of Dehn's turns in the image of Johnson's homomorphisms

Leave $$S$$ be a closed surface, $$Gamma = pi_1 S$$ Y $$Gamma_i$$ Be the lower central series defined by $$Gamma_0 = Gamma$$ Y $$Gamma_i =[Gamma,Gamma_{i-1}]$$

Johnson's leak $$lbrace mathcal {K} _i rbrace_ {i = 0,1, ldots}$$ in $$mathrm {Mod} (S)$$ It is classically defined as the map cores:
$$phi_i: mathrm {Mod} (S) rightarrow mathrm {Aut} ( Gamma / Gamma_i).$$
I'm interested in the order of the image of a Dehn turn. $$tau _ { gamma}$$ along a non-trivial separation curve $$gamma$$ in $$S$$ for the maps $$phi_i$$

I know that Johnson's subgroup (which would be $$mathcal {K} _2$$ with these notations) contains all of Dehn's turns along the separation curves, so $$phi_2 ( tau _ { gamma}) = 1.$$ My question is:

Is $$phi_3 ( tau _ { gamma})$$ of infinite order?

## list manipulation: creation of a mirror image function of an interpolation function

Consider the following interpolation function, which is given as an example:

``````l0 = table[{x, x^3/(1 + x)}, {x, 0, 3, 0.001}];
l1 = table[{x, x^2}, {x, 3.001, 5, 0.001}];
l2 = Join[l0, l1];
func = Interpolation[l2, InterpolationOrder -> 1];
Plot[func[x], {x, 0, 5}]
``````

say it `function` is given, what calculation should I perform to have some other function, for example `func2`, which will produce a mirror image function, which can be used in calculations and plotted with the command

``````Plot[func2[x], {x, -5,0}]
``````

Note: without making a new list … consider that `function` is given … the list has just been given as an example.

## What filters or applications are used for this small effect of brightness in the image?

What effects or application do you use to capture this photo?

## thematic: use the filter of twigs to resize / crop the image in the template in Drupal 8

I want to use a filter of twigs to resize / crop images in templates, I know that this is possible with the styles of image and sensitive images, but I do not like that approach.

I would prefer something like:

``````
``````

Or something similar to LiipImagineBundle https://symfony.com/doc/master/bundles/LiipImagineBundle/basic-usage.html

Does anyone know if it is possible to use it with Drupal 8?

## Image stabilization: pixel-size translations between the following images of mobile phones taken on a tripod?

I try to take two identical images that are exactly the same in every way, except the noise. However, I find it incredibly difficult due to the small angular movements that seem to always occur between the shots of my digital SLR camera and the mobile phone. I know about the impact of the shutter and the vibrations that come from a moving mirror, but my phone has no moving parts (to my knowledge). So, why if I take two images in quick succession, using a remote control so that my hands do not touch the phone, and using a tripod, I observe a minute of pixel size of the translations between the images taken in immediate succession? (It also happens with my digital SLR camera, but that's easier to explain because of its mechanical vibrations).

The explanations that I have thought are,

• My tripod is settling down due to gravity and latent tension after moving it.
• Some kind of internal image stabilization that I can not turn off is to translate the shots differently each time.

Why do you think my images are coming out a little differently? Taking two completely identical photos is a fool's chore or is there a way to do it?

## Image processing – efficient algorithms for the reconstruction of destroyed documents

Your problem is NP-Complete, even for the strips (n yield strips (2n)!) Used, so people use heuristics, transformations like Hough and morphological filters (to match the continuity of the text, but this increases considerably the complexity for comparison) or any type of genetic search / NN, optimization of ant colonies.

For a summary of the consecutive steps and several algorithms, I recommend an investigation on the automated reconstruction of crushed documents using heuristic search algorithms.

The problem itself may end up in unpleasant cases, when the document is not fully sharpened (blurred, it is printed with low resolution) and the width of the strips is small and cut with a physical cutter with opaque edges, because the standard fusion methods, such as panoramic photo, improper results are lost This is due to the loss of information when losing small strips, otherwise, if you have a complete digital image cut into pieces, it is as difficult as a puzzle, the image no digital falls in the approximate search.

To make the algorithm automatic, another problem is the feeding of pieces, rarely you can give strips aligned with the axis, so to start the process it is good to enter all the stripes as an image with pieces put by hand, this imposes another problem (this is easy) to detect Blobs and rotate them.

By special shredder instead of stripes they produce very small rectangles. For comparison, the class P-1 shredder gives stripes of 6 to 12 mm width of any length (approximately 1800 mm ^ 2), class P-7 offers rectangles with an area smaller than 5 mm ^ 2. When you get rectangles instead of stripes, the problem produces (4n)! Permutations, assuming a one-sided document, if there are many fragments of unrelated documents (without images, only text) in a bag, the problem is not really manageable.

## Google Image Search – Erroneous photo attributed to my name and work

I have written a novel and a movie, as well as other works. When I search for my name on Google, the photo of another person who shares PART of my name appears in a window to the right of the search results. There my work is attributed to the photo of this other person. How can I correct this?

## html5: the image is not displayed in the viewer of a mobile device or tablet despite having a size of 250 px wide

This is my code:

``````

xxxx

``````

My image has the size: 2500px wide by 1500px high

It shows up well on the desktop and in the browser when resized. However, it only shows the alt tag on the tablet and mobile devices after SFTP-ing.

I have tried to resize the image to 250px wide by 173px high with the same results.