---
title: "Lut..::.BuildFromBitmapHistogram Method "
canonical: https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_Transforms_Lut_BuildFromBitmapHistogram_1_fd4033ef.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/)

# Lut.BuildFromBitmapHistogram Method 
 
Builds a LUT which would make histogram of the specified bitmap as uniform as possible.
 
**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 Sub BuildFromBitmapHistogram ( _bitmap As Bitmap _
)
```
 
```csharp
public void BuildFromBitmapHistogram(Bitmap bitmap
)
```
 
### Parameters
 
 - bitmap
     - Type: [Aurigma.GraphicsMill.Bitmap](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Bitmap.htm.md)
 [Bitmap](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Bitmap.htm.md) class instance to get histogram from.
 
## Remarks
 Typically this LUT is used to apply histogram equalization algorithm. You can also do it using [HistogramEqualize](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Transforms_HistogramEqualize.htm.md) class.
   
## See Also

### Reference

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