image_utils.h

/*
 * Copyright 2022 Adobe. All rights reserved.
 * This file is licensed to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. You may obtain a copy
 * of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
 * OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
#pragma once
 
#include <lagrange/common.h>
#include <lagrange/image/ImageView.h>
 
namespace lagrange {
namespace image {
 
float image_standard_deviation(const image::ImageView<float>& image);

void depth_to_disparity(
    const image::ImageView<float>& image,
    float vfov,
    image::ImageView<float>& result);
 

void normalize_max_image(const image::ImageView<float>& image, image::ImageView<float>& result);

struct ImageHistogram
{
    std::vector<int> counts; 
    std::vector<float> boundaries; 
    float min_value; 
    float max_value; 
};
 

ImageHistogram create_image_histogram(const image::ImageView<float>& image, int num_bins);

float compute_otsu_threshold(const ImageHistogram& histogram, float upper_limit);
 
} // namespace image
} // namespace lagrange