About high-resolution image matching?

[chufall]

Hi, thank you for your excellent work! I have some high-resolution(4k) images about, so if i resize these image into the 640x480， it will lost many details and effect the accuracy of the matching. Any suggestion about 4k images mathing?
The way i thought is to split the image into several patches. Is it ok?

Thanks a lot qc

[xmba15]

I did split the image into several patches and did image matching for each patch pair using LOFTR, merging all the matched key points after that. Of course, you need to know that this patch of this image corresponds to which patch of the target image if you follow this approach.