What transformations to make the picture black text on a white background with no fill?

Picture
5df9e845b0b3c594237809.jpeg

That is, you need color and zastelennye be removed to within the text was completely black, and the background around a completely white (or transparent).

But you need to leave a smooth transition where the boundary is foreground and background. Without this transition, as if everything is obvious. And here's how to keep this transition? If you are a hard paint, and then to blur,the letters "e" will turn out slightly different sizes.

Is there any universal way without taking into account the shape and the distribution of colors in the background?
April 3rd 20 at 18:30
1 answer
April 3rd 20 at 18:32
Solution
If fast, then draw the same gradient. Subtract it from the original image.
After alignment of the background to do the binarization.
spoiler
5dfa79bfbe801440184330.png
- donnie.Zulauf commented on April 3rd 20 at 18:35

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