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/*
* cv_image_sharp.cpp - image sharp
*
* Copyright (c) 2016-2017 Intel Corporation
*
* Licensed 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 CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Author: Andrey Parfenov <a1994ndrey@gmail.com>
* Author: Wind Yuan <feng.yuan@intel.com>
*/
#include "cv_image_sharp.h"
namespace XCam {
CVImageSharp::CVImageSharp ()
: CVBaseClass ()
{
}
cv::Mat
CVImageSharp::sharp_image_gray (const cv::Mat &image, float sigmar)
{
cv::Mat temp_image;
image.convertTo (temp_image, CV_32FC1);
cv::Mat bilateral_image;
cv::bilateralFilter (temp_image, bilateral_image, 5, sigmar, 2);
cv::Mat sharp_filter = (cv::Mat_<float>(3, 3) << -1, -1, -1, -1, 8, -1, -1, -1, -1);
cv::Mat filtered_image;
cv::filter2D (bilateral_image, filtered_image, -1, sharp_filter);
cv::normalize (filtered_image, filtered_image, 0, 255.0f, cv::NORM_MINMAX);
cv::Mat sharpened = temp_image + filtered_image;
cv::normalize (sharpened, sharpened, 0, 255.0f, cv::NORM_MINMAX);
return sharpened.clone ();
}
float
CVImageSharp::measure_sharp (const cv::Mat &image)
{
cv::Mat dst;
cv::Laplacian (image, dst, -1, 3, 1, 0, cv::BORDER_CONSTANT);
dst.convertTo (dst, CV_8UC1);
float sum = cv::sum (dst)[0];
sum /= (image.rows * image.cols);
return sum;
}
}
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