# NoiseReplacerConfig¶

## Configuration fields¶

### noiseOffset¶

Add ann offset to the generated noise.

### noiseSeedMultiplier¶

The seed multiplier value to use for random number generation: >= 1: set the seed deterministically based on exposureId 0: fall back to the afw.math.Random default constructor (which uses a seed value of 1)

### noiseSource¶

- Default
`'measure'`

- Field type
- Choices
`'measure'`

Measure clipped mean and variance from the whole image

`'meta'`

Mean = 0, variance = the “BGMEAN” metadata entry

`'variance'`

Mean = 0, variance = the image’s variance

`'variance_median'`

Mean = 0, variance = median(variance plane)

How to choose mean and variance of the Gaussian noise we generate?