ImageGear for .NET
HighPassFilter
| ImageGear for .NET User Guide > Using ImageGear for .NET > Using ImageGear.FreqIP Namespace > Image Filtering > HighPassFilter |
This HighPassFilter Method filters the image using a high-pass filter.
Available filter brands include Ideal, Butterworth, Gaussian, Chebyshev I, and Chebyshev II.
Before using this function, like other frequency processing functions, ImGearFrequencyProcessing.InitializeFFTW Method() must be called first to enable the support for FFTW.
Can be applied only to 8-bit grayscale images with one channel.
Method ImGearFrequencyProcessingVerifier.CanApplyHighPassFilter Method can be called to check whether the operation can be performed or not.