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44 lines
1.4 KiB
44 lines
1.4 KiB
/*
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Copyright (C) 2014 Jerome Revaud
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef ___PIXEL_DESC_H___
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#define ___PIXEL_DESC_H___
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#include "image.h"
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#include "array_types.h"
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// pixel descriptor params
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typedef struct {
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float presmooth_sigma; // image pre-smoothing
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float mid_smoothing; // smoothing of oriented gradients (before sigmoid)
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float post_smoothing; // smoothing of oriented gradients (after sigmoid)
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float hog_sigmoid; // sigmoid strength
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float ninth_dim; // small constant for gradient-less area
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bool norm_pixels; // 1: normalize pixels separately / 0: normalize atomic patches
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} desc_params_t;
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// set default params
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void set_default_desc_params( desc_params_t* params );
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/* extract pixel descriptors (pixel-wise HOG)
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*/
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float_layers* extract_desc( image_t* _img, const desc_params_t* params, int nt );
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#endif
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