40 lines
1 KiB
C++
40 lines
1 KiB
C++
/*
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* Copyright 2015 The Etc2Comp Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <math.h>
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namespace Etc
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{
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// ----------------------------------------------------------------------------------------------------
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// return true if vertical line
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bool Regression(float a_afX[], float a_afY[], unsigned int a_Points,
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float *a_fSlope, float *a_fOffset);
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inline float ConvertMSEToPSNR(float a_fMSE)
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{
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if (a_fMSE == 0.0f)
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{
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return INFINITY;
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}
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return 10.0f * log10f(1.0f / a_fMSE);
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}
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}
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