vision.Median System object

Package: vision

Find median values in an input

Description

The `Median` object finds median values in an input.

Construction

`H = vision.Median` returns a System object, `H`, that computes the median of the input or a sequence of inputs.

`H = vision.Median(Name,Value)` returns a median System object, `H`, with each specified property set to the specified value. You can specify additional name-value pair arguments in any order as (`Name1`, `Value1`,...,`NameN`,`ValueN`).

Code Generation Support
Supports MATLAB® Function block: Yes
System Objects in MATLAB Code Generation.
Code Generation Support, Usage Notes, and Limitations.

Properties

 `SortMethod` Sort method Specify the sort method used for calculating the median as ```Quick sort``` or `Insertion sort`. `Dimension` Dimension with which to operate along Specify how the calculation is performed over the data as `All`, `Row`, `Column`, or `Custom`. The default is `All` `CustomDimension` Numerical dimension over which to calculate Specify the integer dimension of the input signal over which the object calculates the mean. The value of this property cannot exceed the number of dimensions in the input signal. This property only applies when you set the `Dimension` property to `Custom`. The default is `1`.

Methods

 clone Create median object with same property values getNumInputs Number of expected inputs to step method getNumOutputs Number of outputs from step method isLocked Locked status for input attributes and non-tunable properties release Allow property value and input characteristics changes step Compute median of input

Examples

Determine the median in a grayscale image.

``` img = im2single(rgb2gray(imread('peppers.png'))); hmdn = vision.Median; med = step(hmdn,img); ```

Algorithms

This object implements the algorithm, inputs, and outputs described on the 2-D Median block reference page. The object properties correspond to the block parameters.