---
title: "Maximum Class"
canonical: https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Transforms_Maximum.htm
archived: false
applies_to:
  - product: "Graphics Mill"
    versions: ["12.1", "6.x-12.x (may differ)"]
    entity_id: "https://www.graphicsmill.com/#software-application"
---

# Maximum Class

**Applies to:** Graphics Mill 12.1, 6.x-12.x (may differ)
 
Applies a maximum filter (also known as erosion) to an image.
 
**Namespace:** [Aurigma.GraphicsMill.Transforms](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Transforms.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```csharp
public sealed class Maximum : MaskTransform
```
 
## Remarks
  
Maximum filter is a non-linear filter which works in the following way: for each pixel it searches pixel with maximum brightness in "running window" of the radius specified with [Radius](https://www.graphicsmill.com/docs/gm/P_Aurigma_GraphicsMill_Transforms_Maximum_Radius.htm.md) property. This pixel is copied to the result bitmap.
 
That's why if you apply this filter on the image with has black objects on white background (for example text), they will be *erosed*.
 
## Inheritance Hierarchy
  
- System.Object
    - [Aurigma.GraphicsMill.PipelineElement](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_PipelineElement.htm.md)
        - [Aurigma.GraphicsMill.Transforms.Transform](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Transforms_Transform.htm.md)
            - [Aurigma.GraphicsMill.Transforms.MaskTransform](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Transforms_MaskTransform.htm.md)
                - Aurigma.GraphicsMill.Transforms.Maximum
 
## Thread Safety
 Static members of this type are not safe for multi-threaded operations. Instance members of this type are not safe for multi-threaded operations.
   
## See Also

### Reference

- [Maximum Members](https://www.graphicsmill.com/docs/gm/AllMembers_T_Aurigma_GraphicsMill_Transforms_Maximum.htm.md)
- [Aurigma.GraphicsMill.Transforms Namespace](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Transforms.htm.md)