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