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step

System object: vision.ImageFilter
Package: vision

Filter input image

Syntax

Y = step(H,I)
Y = step(H,I,COEFFS)
Y = step(H,I,HV,HH)
Y = step(H,...,PVAL)

Description

    Note:   Starting in R2016b, instead of using the step method to perform the operation defined by the System object™, you can call the object with arguments, as if it were a function. For example, y = step(obj,x) and y = obj(x) perform equivalent operations.

Y = step(H,I) filters the input image I and returns the filtered image Y.

Y = step(H,I,COEFFS) uses filter coefficients, COEFFS, to filter the input image. This applies when you set the CoefficientsSource property to Input port and the SeparableCoefficients property to false.

Y = step(H,I,HV,HH) uses vertical filter coefficients, HV , and horizontal coefficients, HH, to filter the input image. This applies when you set the CoefficientsSource property to Input port and the SeparableCoefficients property to true.

Y = step(H,...,PVAL) uses the input pad value PVAL to filter the input image I. This applies when you set the OutputSize property to either Full or Same as first input, the PaddingMethod property to Constant, and the PaddingValueSource property to Input port.

    Note:   H specifies the System object on which to run this step method.

    The object performs an initialization the first time the step method is executed. This initialization locks nontunable properties and input specifications, such as dimensions, complexity, and data type of the input data. If you change a nontunable property or an input specification, the System object issues an error. To change nontunable properties or inputs, you must first call the release method to unlock the object.

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