power_realpower_realPowerRealPowerRealpower_real (算子名称)

名称

power_realpower_realPowerRealPowerRealpower_real — Return the power spectrum of a complex image.

参数签名

描述

power_realpower_realPowerRealPowerRealPowerRealpower_real computes the power spectrum from the real and imaginary parts of a Fourier-transformed image (see fft_imagefft_imageFftImageFftImageFftImagefft_image), i.e., the modulus of the frequencies. The result image is of type real. The following formula is used:

运行信息

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Automatically parallelized on tuple level.
• Automatically parallelized on internal data level.
• Automatically parallelized on domain level.

参数表

例程 (C)

read_image(&Image,"monkey");
disp_image(Image,WindowHandle);
fft_image(Image,&FFT);
power_real(FFT,&Power);
disp_image(Power,WindowHandle);

结果

power_realpower_realPowerRealPowerRealPowerRealpower_real returns 2 ( H_MSG_TRUE) if the image is of correct type. If the input is empty the behavior can be set via set_system(::'no_object_result',<Result>:)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>). If necessary, an exception is raised.

可能的前置算子

fft_imagefft_imageFftImageFftImageFftImagefft_image, fft_genericfft_genericFftGenericFftGenericFftGenericfft_generic, rft_genericrft_genericRftGenericRftGenericRftGenericrft_generic, convol_fftconvol_fftConvolFftConvolFftConvolFftconvol_fft, convol_gaborconvol_gaborConvolGaborConvolGaborConvolGaborconvol_gabor

可能的后置算子

disp_imagedisp_imageDispImageDispImageDispImagedisp_image, convert_image_typeconvert_image_typeConvertImageTypeConvertImageTypeConvertImageTypeconvert_image_type, scale_imagescale_imageScaleImageScaleImageScaleImagescale_image

可替代算子

abs_imageabs_imageAbsImageAbsImageAbsImageabs_image, convert_image_typeconvert_image_typeConvertImageTypeConvertImageTypeConvertImageTypeconvert_image_type, power_bytepower_bytePowerBytePowerBytePowerBytepower_byte, power_lnpower_lnPowerLnPowerLnPowerLnpower_ln

参考其它

fft_imagefft_imageFftImageFftImageFftImagefft_image, fft_genericfft_genericFftGenericFftGenericFftGenericfft_generic, rft_genericrft_genericRftGenericRftGenericRftGenericrft_generic

模块

Foundation

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