Image data repeat resize and compute ratio bugs about yolox

[FateScript]

Yes, I totally agree with you. In fact, the root reason for this is that we are lack of time when we prepara to release the code. Dataloader and its related code in this repo should be refactored actually.

[OceanWong1991]

@FateScript You can debug it, the ratio is constant 1.0, because when we load image and anno, we already do the resize and ratio work.

[OceanWong1991]

I also make a PR fix this bug, and past the test on my server, if there is anything wrong with my understanding, plz tell me, Thx~

[FateScript]

Thanks for you contribution : )
Actucally this code is writen by design. User could delete this code or write their own version. We add 3 resize code is to make sure those people who fork this repo will not doing things wrong if they modify the code a little.

[OceanWong1991]

@FateScript Thx for your replying. Actually, I DO NOT think repeat write same code is a good to prevent users from making mistakes.