Sticker | add multiple stickers on a picture

I don´t know any library that can do this, but you can do it yourself.

First, you can compare the days of the week of classes to know which classes you have to compare (you are going to compare the classes given on the same day).

Then, when you have the classes of a day, you have to compare the hours of these classes.

it seems the _stickerData is undefined at the time when it assigns to the url, try to check whether the _stickerData has the proper value and then assign it.

Here is the code that does it:

The blue and green in those images are really close to each other color-wise ([80,95] vs [97, 101] on the Hue Channel). Unfortunately light-blue and green are right next to each other as colors. I tried it in both the HSV and LAB color spaces to see if I could get better separation in one vs the other.

I aligned the images using feature matching as you mentioned. We can see that the perspective difference causes bits of the candy to poke out (the blue bits)

I made a mask based on the pixel-wise difference in color between the two.

There's a lot of bits sticking out because the images don't line up perfectly. To help deal with this we can also check a square region around each pixel to see if any of its nearby neighbors match its color. If it does, we'll remove it from the mask.

We can use this to paint on the original image to mark what's different.

Here's the results from the LAB version of the code

I'll include both versions of the code here. They're interactive with 'WASD' to change the two parameters (color margin and fuzz margin). The color_margin represents how different two colors have to be to no longer be considered the same. The fuzz_margin is how far to look around the pixel for a matching color.

lab_version.py

The HTML for that website has no visual hierarchy, so it's tough to plow down through it. But this is what I arrived at:

=IMPORTXML("https://csgostash.com/sticker/3666/Battle-Scarred-Holo","/html/body/div[2]/div[4]/div/div/div/div/div[1]/a/span[2]")

Perhaps, you have to obtain correct translation values by re-calculating the transform matrix that is compatible to the View's transform.

The problem is in the control flow of the StickerListener.mouseClicked(): you search the stickers to find the one that has been clicked.

Due to the if / else you reset the toolbar for every sticker that has not been clicked, meaning that your code only works if you clicked on the last sticker (in order of iteration).

Your code will work if you move the code from the else part before the loop (so that it executes only once):

You mention 3 pages of data. You are leaking 2 x TJasonArray, and you are freeing one TJasonArray on the last line right after an end; that doesn't have a corresponding begin.

From that I draw the conclusion that you have a loop (that you did not show) that you run three times. On each time you create a TJasonArray but you free only one, after the loop end;, Move the JSonArray.Free; to before the end;.

there are a few things you could probably improve upon.

First you should try and normalize what your data.frame columns are called. Maybe they should just be a single column with a name stickers

e.i.