hytools.transform package

Submodules

hytools.transform.mnf module

hytools.transform.resampling module

HyTools: Hyperspectral image processing library Copyright (C) 2021 University of Wisconsin

Authors: Adam Chlus, Zhiwei Ye, Philip Townsend.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 of the License.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.

Spectral resampling functions.

hytools.transform.resampling.apply_resampler(hy_obj, data)[source]

Apply SCSS correction to a slice of the data

Parameters

  • hy_obj (TYPE) – DESCRIPTION.

  • band (TYPE) – DESCRIPTION.

  • index (TYPE) – DESCRIPTION.

Returns

DESCRIPTION.

Return type

band (TYPE)

hytools.transform.resampling.calc_resample_coeffs(in_wave, in_fwhm, out_wave, out_fwhm, spacing=1)[source]

Given a set of source and destination wavelengths and FWHMs this function caculates the relative contribution or each input wavelength to the output wavelength. It assumes that both input and output response functions follow a gaussian distribution.

All inputs shoud be provide in nanometers.

Parameters

  • in_wave (list) – Input wavelength centers.

  • in_fwhm (list) – Input full width half maxes.

  • out_wave (list) – Output wavelength centers.

  • out_fwhm (list) – Output full width half maxes.

  • spacing (int, optional) – Resolution at which to model the spectral response functions. Defaults to 1.

Returns

Transform coeffiecients.

Return type

numpy.ndarray

hytools.transform.resampling.gaussian(x, mu, fwhm)[source]
Parameters

  • x (numpy.ndarray) – Values along which to generate gaussian..

  • mu (float) – Mean of the gaussian function..

  • fwhm (float) – Full width half maximum..

Returns

Gaussian along input range.

Return type

numpy.ndarray

Module contents

HyTools: Hyperspectral image processing library Copyright (C) 2021 University of Wisconsin

Authors: Adam Chlus, Zhiwei Ye, Philip Townsend.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 of the License.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.

Transform functions