bild | Image processing algorithms in pure Go | Computer Vision library

I am currently working on a web application and I have a file input field where the user can upload images. I´d like to make sure that really just images get uploaded via javascript. Anyhow I can´t get the eventlistener to work... You can find the relevant Code snippets underneath:

I have to do a task for university in C. The program creates images in PGM format.The program compiles successfully, however, I can't run the program correctly. At the beginning of the main function the if operator needs 2 argc, but every time I try to run the program I just have one argc and I get the result

"Error: missing or bad parameters, usage a3 [imagefile]"

The code is:

a strange phenomenon occurs. With my edge detection program, I can transfer the inside of the GraphicsPath to a new image. It always works great – except when I scale the original image with GIMP and Word (aspect ratio remains, only the dimensions are changed). Then the area is shifted. To the left and up. See attachement. In line 68, I looked what is in rectCutout. Everything OK.

Does this have anything to do with GIMP? The dots per inch are the same (72). The compression quality of the JPEG also (100%).

I just realized: if I scale an image larger, the result is completely black.

The strange thing is: I'm not saying: the picture that is drawn on is larger than the picture that is saved. Then it would be logical that the path is not in the same position. It's about the fact that the loaded image is just smaller.

I would be happy if someone could tell me why. 😄

this is the scaled image which is loaded

Here you see the GUI, ready to save

cropped image, area has x and y offset

I'm trying to solve the equation "eq" for "mu". How do I tell maxima that I only want the positive result, is this the best way var : abs(mu), res;? But, my main problem is, that the results contains %i, where does that come from? Shouldn't it be solvable in R, without the need for complex numbers, like I demonstrated in my "by hand"-calculation?

Arithmetic solution:

I'm working on a school project in which I have to create a small Webpage introducing you to a topic of choice.

Unfortunately my website has a horizontal scrollbar and I don't have a clue which element causes it. I tried disabling the elements one after another but haven't found a solution

Thanks in advance for any tips!

I have a problem. If the user press the button from the Input.js the method checkAll() should called. Inside of this method the child method should be called checkProfilPicture(). This works fine. But the method checkProfilPicture() should change a variable to false and if the variable is false - a text should appear return ( { isPreview === false ?? ... } ). Unfortunately this part isn't working.

So how could I appear the text when the method checkProfilPicture() is called`?

Childcomponent Profilepic.js (Edit)

I am trying to batch the content of a section while always batching half the amount that is to display.

I'm creating an extension that allows me to drag photo links in some website that doesn't allow it. The element (photoCell) has a default href of "javascript://" and has a child element (photo) which holds the image.

I want to be able to change the href of the parent element to the src of the child image so when i drag, i drag the URL of the child image. (This works if i do it without a drag listener but then when i click on an element it loads the image and not the expected javascript function). So i need to change the href back to "javascript://" after drag is done.

However, even though the href changes the dragged URL still is "javascript://"

I'm trying to display map elements using the map function of React. Each map element has an image. If I look at the array, there is content in this, so it is filled. The picture is in Base64 format. If I try to render a normal images tag with an image from the array outside of the map function, this is how it works! So it must somehow be due to the map function - just where?