What is the function of instance normalization?

This article introduces you what the role of instance normalization is, the content is very detailed, interested friends can refer to, hope to be helpful to you.

The role of IN, in a word, is to eliminate global information. For example, IN a voice, it will filter out the global information, for example, the timbre is the global information, because it exists from beginning to end, and the content of the voice is local information, because the words are different at different times.

So when doing style transfer, you can use IN to filter out the timbre information along the way of extracting content.

But for timbre, it is a global information, and there is likely to be a residue of content information in the extraction process. What should I do?

As shown in the following figure, we generally use AdaIN, which is not fed to decoder, but is added to decoder using AdaIN to control the global information such as timbre of decoder.

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