1 /* 2 * cv_image_sharp.cpp - image sharp 3 * 4 * Copyright (c) 2016-2017 Intel Corporation 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 * Author: Andrey Parfenov <a1994ndrey (at) gmail.com> 19 * Author: Wind Yuan <feng.yuan (at) intel.com> 20 */ 21 22 #include "cv_image_sharp.h" 23 24 namespace XCam { 25 26 27 CVImageSharp::CVImageSharp () 28 : CVBaseClass () 29 { 30 31 } 32 33 cv::Mat 34 CVImageSharp::sharp_image_gray (const cv::Mat &image, float sigmar) 35 { 36 cv::Mat temp_image; 37 image.convertTo (temp_image, CV_32FC1); 38 cv::Mat bilateral_image; 39 cv::bilateralFilter (temp_image, bilateral_image, 5, sigmar, 2); 40 41 cv::Mat sharp_filter = (cv::Mat_<float>(3, 3) << -1, -1, -1, -1, 8, -1, -1, -1, -1); 42 cv::Mat filtered_image; 43 cv::filter2D (bilateral_image, filtered_image, -1, sharp_filter); 44 cv::normalize (filtered_image, filtered_image, 0, 255.0f, cv::NORM_MINMAX); 45 cv::Mat sharpened = temp_image + filtered_image; 46 cv::normalize (sharpened, sharpened, 0, 255.0f, cv::NORM_MINMAX); 47 return sharpened.clone (); 48 } 49 50 float 51 CVImageSharp::measure_sharp (const cv::Mat &image) 52 { 53 cv::Mat dst; 54 cv::Laplacian (image, dst, -1, 3, 1, 0, cv::BORDER_CONSTANT); 55 dst.convertTo (dst, CV_8UC1); 56 float sum = cv::sum (dst)[0]; 57 sum /= (image.rows * image.cols); 58 return sum; 59 } 60 61 } 62
