1 // Copyright (c) 2006, 2008 Edward Rosten 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions 6 // are met: 7 // 8 // *Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // 11 // *Redistributions in binary form must reproduce the above copyright 12 // notice, this list of conditions and the following disclaimer in the 13 // documentation and/or other materials provided with the distribution. 14 // 15 // *Neither the name of the University of Cambridge nor the names of 16 // its contributors may be used to endorse or promote products derived 17 // from this software without specific prior written permission. 18 // 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 23 // OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 26 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 27 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 28 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31 // clang-format off 32 #ifndef FAST_H 33 #define FAST_H 34 35 typedef struct { int x, y; } xy; 36 typedef unsigned char byte; 37 38 int aom_fast9_corner_score(const byte* p, const int pixel[], int bstart); 39 40 xy* aom_fast9_detect(const byte* im, int xsize, int ysize, int stride, int b, int* ret_num_corners); 41 42 int* aom_fast9_score(const byte* i, int stride, xy* corners, int num_corners, int b); 43 44 xy* aom_fast9_detect_nonmax(const byte* im, int xsize, int ysize, int stride, int b, int* ret_num_corners); 45 46 xy* aom_nonmax_suppression(const xy* corners, const int* scores, int num_corners, int* ret_num_nonmax); 47 48 49 #endif 50 // clang-format on 51