45 lines
1.9 KiB
C++
45 lines
1.9 KiB
C++
// basisu_ssim.h
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// Copyright (C) 2019 Binomial LLC. All Rights Reserved.
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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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#pragma once
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#include "basisu_enc.h"
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namespace basisu
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{
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float gauss(int x, int y, float sigma_sqr);
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enum
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{
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cComputeGaussianFlagNormalize = 1,
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cComputeGaussianFlagPrint = 2,
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cComputeGaussianFlagNormalizeCenterToOne = 4
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};
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void compute_gaussian_kernel(float *pDst, int size_x, int size_y, float sigma_sqr, uint32_t flags = 0);
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void scale_image(const imagef &src, imagef &dst, const vec4F &scale, const vec4F &shift);
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void add_weighted_image(const imagef &src1, const vec4F &alpha, const imagef &src2, const vec4F &beta, const vec4F &gamma, imagef &dst);
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void add_image(const imagef &src1, const imagef &src2, imagef &dst);
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void adds_image(const imagef &src, const vec4F &value, imagef &dst);
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void mul_image(const imagef &src1, const imagef &src2, imagef &dst, const vec4F &scale);
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void div_image(const imagef &src1, const imagef &src2, imagef &dst, const vec4F &scale);
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vec4F avg_image(const imagef &src);
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void gaussian_filter(imagef &dst, const imagef &orig_img, uint32_t odd_filter_width, float sigma_sqr, bool wrapping = false, uint32_t width_divisor = 1, uint32_t height_divisor = 1);
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vec4F compute_ssim(const imagef &a, const imagef &b);
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vec4F compute_ssim(const image &a, const image &b, bool luma, bool luma_601);
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} // namespace basisu
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