I use im2rec in MXNet to generate images based according to #4 , then choosing choose resize=320 will yield default image size as 320*320. Also you could set resize=224 when doing .rec file generation. But still I cannot reproduce the results mentioned in the README and the Top-1 error is usually lower by around 1% and Top-5 errors is lower by 0.2%, I try to boost the accuracy by center croping but I don't know how to reproduce the similar result. @cypw Could you give us more hints?

@whcacademy

Please set the unchanged option to 1 while generating the .rec file using im2rec as I have already indicated in run_val.sh.

Note that: By setting unchanged=1, im2rec will directly save the raw image data without even decode it, see: im2rec.cc. So you won't lose any valuable information in this step, which may potentially damage the performance.

Sorry for ignoring import comments in that file.
And new test does reach the performance in the README.

Thanks!