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sv_ip_fft(sv_ip) SunVision IP sv_ip_fft(sv_ip)

NAME

sv_ip_fft - compute fourier transform of an image

DESCRIPTION

The sv_ip_fft object computes the fourier transform of its input image. The output image is a packed representation of both the phase and magnitude of the input image. The input and output images must be of type ipFLOAT and be the same size. The height and width of the images must both be a power of 2.

SUPERCLASS

sv_ip_filter

INSTANCE VARIABLES

No new instance variables.

MESSAGES

No new messages.

EXAMPLE

<sv-ip-constants <mr-image

sv_ip_display new: mr_image data_in=`mr_ip' title=`Original data' render! ;

sv_ip_copy new: mr_float data_in=`mr_ip' data_type=ipFLOAT ;

sv_ip_fft new: fft data_in=`mr_float';

sv_ip_fft_display new: phase data_in=`fft' destination_select=ipPHASE ;

sv_ip_display new: phase_image data_in=`phase' title=`Phase image' render! ;

sv_ip_fft_display new: mag data_in=`fft' destination_select=ipMAGNITUDE log_flag= 1 ;

sv_ip_display new: mag_image data_in=`mag' title= `Magnitude' render! ;