f7d00a828d
Height is not a good determinant in movement direction, normalized error is much better. Should fix aes1610 and aes2501 driver issues.
66 lines
2 KiB
C
66 lines
2 KiB
C
/*
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* Image assembling routines
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* Shared functions between libfprint Authentec drivers
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* Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
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* Copyright (C) 2015 Vasily Khoruzhick <anarsoul@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __ASSEMBLING_H__
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#define __ASSEMBLING_H__
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#include <fp_internal.h>
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struct fpi_frame {
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int delta_x;
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int delta_y;
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unsigned char data[0];
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};
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struct fpi_frame_asmbl_ctx {
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unsigned frame_width;
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unsigned frame_height;
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unsigned image_width;
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unsigned char (*get_pixel)(struct fpi_frame_asmbl_ctx *ctx,
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struct fpi_frame *frame,
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unsigned x,
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unsigned y);
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};
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void fpi_do_movement_estimation(struct fpi_frame_asmbl_ctx *ctx,
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GSList *stripes, size_t stripes_len);
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struct fp_img *fpi_assemble_frames(struct fpi_frame_asmbl_ctx *ctx,
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GSList *stripes, size_t stripes_len);
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struct fpi_line_asmbl_ctx {
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unsigned line_width;
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unsigned max_height;
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unsigned resolution;
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unsigned median_filter_size;
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unsigned max_search_offset;
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int (*get_deviation)(struct fpi_line_asmbl_ctx *ctx,
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GSList *line1, GSList *line2);
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unsigned char (*get_pixel)(struct fpi_line_asmbl_ctx *ctx,
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GSList *line,
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unsigned x);
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};
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struct fp_img *fpi_assemble_lines(struct fpi_line_asmbl_ctx *ctx,
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GSList *lines, size_t lines_len);
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#endif
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