---
title: "HistogramEqualize..::.Histogram Property "
canonical: https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Transforms_HistogramEqualize_Histogram.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# HistogramEqualize.Histogram Property 
 
Gets/sets a histogram should be equalized.
 
**Namespace:** [Aurigma.GraphicsMill.Transforms](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Transforms.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```
Public Property Histogram As Histogram
```
 
```csharp
public Histogram Histogram { get; set; }
```
 
### Property Value
 [Histogram](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Histogram.htm.md) class instance containing a histogram to equalize. Can be **null**.
 
## Remarks
  
If histogram is not set (this property equals to **null**), algorithm automatically builds it from the bitmap at which the effect is applied (depending on [HistogramMode](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Transforms_HistogramEqualize_HistogramMode.htm.md) property). Otherwise it will build LUT that equalizes this histogram and apply it on the image.
 
Default value is **null**.
   
## See Also

### Reference

- [HistogramEqualize Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Transforms_HistogramEqualize.htm.md)
- [Aurigma.GraphicsMill.Transforms Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Transforms.htm.md)