Fft texture: Difference between revisions

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imported>Scott
(New page: ===Purpose=== Calculates FFT for texture analysis. ===Synopsis=== :y = fft_texture(x,options) ===Description=== FFT_TEXTURE can be used to characterize texture in a gray-scale image. ====...)
 
imported>Scott
 
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* '''plots''': [ 'none' | {'final'} ] governs level of plotting,
* '''plots''': [ 'none' | {'final'} ] governs level of plotting,
===See Also===
===See Also===
[[anglemt]], [[autocor_img]], [[detrend_img]], [[semivar]], [[svd_texture]], [[texture]]
[[autocor_img]], [[detrend_img]], [[semivar]], [[svd_texture]], [[texture]]

Latest revision as of 10:33, 29 October 2009

Purpose

Calculates FFT for texture analysis.

Synopsis

y = fft_texture(x,options)

Description

FFT_TEXTURE can be used to characterize texture in a gray-scale image.

INPUTS

  • x = MxN matrix (e.g and image layer).

OUTPUTS

  • y = 2x1 cell array. Each cell contains a vector of the mean square root of the FFT power spectrum. Each cell corresponds to the FFT calculated for 2 directions
  • y{1} is down the rows (top-to-bottom), and
  • y{2} is down the columns (left-to-right).

Options

options is a structure is a structure array with the following fields:

  • plots: [ 'none' | {'final'} ] governs level of plotting,

See Also

autocor_img, detrend_img, semivar, svd_texture, texture