# Observation Wrappers

## Base Class

```{eval-rst}
.. autoclass:: gymnasium.ObservationWrapper

    .. automethod:: gymnasium.ObservationWrapper.observation
```

## Available Observation Wrappers

```{eval-rst}
.. autoclass:: gymnasium.wrappers.TransformObservation
.. autoclass:: gymnasium.wrappers.FilterObservation
.. autoclass:: gymnasium.wrappers.FlattenObservation
.. autoclass:: gymnasium.wrappers.FrameStack
.. autoclass:: gymnasium.wrappers.GrayScaleObservation
.. autoclass:: gymnasium.wrappers.NormalizeObservation
.. autoclass:: gymnasium.wrappers.PixelObservationWrapper
.. autoclass:: gymnasium.wrappers.ResizeObservation
.. autoclass:: gymnasium.wrappers.TimeAwareObservation
```
