1 /* 2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved. 3 * 4 * This source code is subject to the terms of the BSD 2 Clause License and 5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License 6 * was not distributed with this source code in the LICENSE file, you can 7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open 8 * Media Patent License 1.0 was not distributed with this source code in the 9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent. 10 */ 11 12 #ifndef AOM_AOM_DSP_FLOW_ESTIMATION_CORNER_MATCH_H_ 13 #define AOM_AOM_DSP_FLOW_ESTIMATION_CORNER_MATCH_H_ 14 15 #include <stdbool.h> 16 #include <stdio.h> 17 #include <stdlib.h> 18 #include <memory.h> 19 20 #include "aom_dsp/flow_estimation/corner_detect.h" 21 #include "aom_dsp/flow_estimation/flow_estimation.h" 22 #include "aom_scale/yv12config.h" 23 24 #ifdef __cplusplus 25 extern "C" { 26 #endif 27 28 #define MATCH_SZ 16 29 #define MATCH_SZ_BY2 ((MATCH_SZ - 1) / 2) 30 #define MATCH_SZ_SQ (MATCH_SZ * MATCH_SZ) 31 32 // Minimum threshold for the variance of a patch, in order for it to be 33 // considered useful for matching. 34 // This is evaluated against the scaled variance MATCH_SZ_SQ * sigma^2, 35 // so a setting of 1 * MATCH_SZ_SQ corresponds to an unscaled variance of 1 36 #define MIN_FEATURE_VARIANCE (1 * MATCH_SZ_SQ) 37 38 bool av1_compute_global_motion_feature_match( 39 TransformationType type, YV12_BUFFER_CONFIG *src, YV12_BUFFER_CONFIG *ref, 40 int bit_depth, int downsample_level, MotionModel *motion_models, 41 int num_motion_models, bool *mem_alloc_failed); 42 43 #ifdef __cplusplus 44 } 45 #endif 46 47 #endif // AOM_AOM_DSP_FLOW_ESTIMATION_CORNER_MATCH_H_ 48