jackyblackme commented on issue #371: computing image mean URL: https://github.com/apache/incubator-mxnet/issues/371#issuecomment-380034766 Yeah, Put mean_img="path/to/mean.nd". If the file does not exist, ImageRecordIterator will first create this file and calculate mean value, store result in the file. And then start training. Detail can be seen in file "iter_image_recordio_2.cc", the new version of recordio data iterator under "mxnetRoot/src/io/iter_image_recordio_2.cc". Maybe from line 216, the Normalize init and the CreateMeanImg function.
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