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ImageTools

  

ImagePeriodogram

  

generate the periodogram of an image

 

Calling Sequence

Parameters

Options

Description

Examples

Compatibility

Calling Sequence

ImagePeriodogram(img)

Parameters

img

-

Image ; input image

Options

• 

scaling = identical(sqr, "sqr", log, "log", sqrt, "sqrt", none ,"none")

  

Specifies the scaling method used for the discrete fourier transform of img The default is log.

• 

center = identical(none, "none", horizontal, "horizontal", vertical, "vertical", both, "both")

  

Specifies the position of zero-frequency component. "none" and none means no shifting applied. "horizontal" and horizontal means the img is shifted along the first dimension. "vertical" and vertical means the img is shifted along the second dimension. "both" and both means FFTShift with default option is applied for the image img. The default is both.

Description

• 

The ImagePeriodogram(img) returns the periodogram of img by applying the discrete fourier transform and FFTShift.

Examples

withImageTools:

imgReadcatkerneloptsdatadir,/images/tree.jpg:

p1ImagePeriodogramimg

_rtable18446883718888565686

(5.1)

Embedp1

p2ImagePeriodogramimg,center=horizontal:

Embedp2

p3ImagePeriodogramimg,scaling=sqrt:

Embedp3

Compatibility

• 

The ImageTools[ImagePeriodogram] command was introduced in Maple 2019.

• 

For more information on Maple 2019 changes, see Updates in Maple 2019.

See Also

SignalProcessing[DFT]

SignalProcessing[FFT]

SignalProcessing[FFTShift]