How to improve image quality before starting image processing in javacv or opencv?

I have a 400x400 image to identify various components from it. But when I try to identify the components using this time, it does not give the correct answers. So I need to know if there are any methods in javacv or opencv to improve image quality or increase image size without any quality?

This is the image that I use. (This is the maximum size I can get, and I cannot use any photo editing programs in the project because it is a dynamically generated image.)

enter image description here

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