8b0a5b8718
Adds a wiener filter based restoration scheme in loop which can be optionally selected instead of the bilateral filter. The LMMSE filter generated per frame is a separable symmetric 7 tap filter. Three parameters for each of horizontal and vertical filters are transmitted in the bitstream. The fourth parameter is obtained assuming the sum is normalized to 1. Also integerizes the bilateral filters, along with other refactoring necessary in order to support the new switchable restoration type framework. derflr: -0.75% BDRATE [A lot of videos still prefer bilateral, however since many frames now use the simpler separable filter, the decoding speed is much better]. Further experiments to follow, related to replacing the bilateral. Change-Id: I6b1879983d50aab7ec5647340b6aef6b22299636
33 lines
1008 B
C
33 lines
1008 B
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP10_ENCODER_PICKLPF_H_
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#define VP10_ENCODER_PICKLPF_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "vp10/encoder/encoder.h"
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struct yv12_buffer_config;
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struct VP10_COMP;
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int vp10_get_max_filter_level(const VP10_COMP *cpi);
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int vp10_search_filter_level(const YV12_BUFFER_CONFIG *sd, VP10_COMP *cpi,
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int partial_frame, double *err);
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void vp10_pick_filter_level(const struct yv12_buffer_config *sd,
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struct VP10_COMP *cpi, LPF_PICK_METHOD method);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP10_ENCODER_PICKLPF_H_
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