Normalizing Pixel Values in FormatConverterOp

My pipeline currently consists of FormatConverterOp and InferenceOp with a CV model.

I have set the scale_min and scale_max parameters for FormatConverterOp, but they are only scaling and nor normalizing the pixel values based on a mean and std. Is there a way to use FormatConterverOp or another pre-defined operator to normalize image values?