Image Targets Compiler，What's the difference between each scaled version?

[quyingyong]

After compiling the image, there are multiple scaled versions, how do I choose? What's the difference between each scaled version? Is there an effect between scaled versions?

[sodatom]

Although I'm not entirely sure about this but I don't think you choose. These are all used to recognise the image at different scales, depending on how far or near you are from your target.

[leeson3]

It seems to be the Gaussian difference of sift. You can refer to this article https://docs.opencv.org/4.x/da/df5/tutorial_py_sift_intro.html. The source code can be seen at https://github.com/hiukim/mind-ar-js/blob/master/src/image-target/detector/detector.js#L63