Histogram Method

In This Topic

Description

Computes the histogram of pixel values

Syntax

Visual Basic
Public Function Histogram( _ ByVal MinValue As Long, _ ByVal MaxValue As Long, _ ByVal BinWidth As Long _ ) As Variant

Visual Basic

Public Function Histogram( _
   ByVal MinValue As Long, _
   ByVal MaxValue As Long, _
   ByVal BinWidth As Long _
) As Variant

Parameters

MinValue: The lowest pixel value to be included
MaxValue: The highest pixel value to be included
BinWidth: The number of adjacent pixel values to be grouped into each bin

Remarks

The format of the returned data is suitable for creating DICOM Image Histogram modules, though to use this a few other attributes must be added.
In keeping with the image histogram module, the values used are raw pixel values before application of a modality lookup table or rescaling – use LookupTable if such translation is required.
The array returned is, like most arrays in DicomObjects, “1-based”, so the bin corresponding to the minimum pixel value quoted is bin 1 (not 0).

For multi-frame images, only the first frame is used for this method.