nghiaxlee commented on a change in pull request #627: MINIFICPP-989 - Motion detect for a set of captured frames URL: https://github.com/apache/nifi-minifi-cpp/pull/627#discussion_r322720953
########## File path: extensions/opencv/MotionDetector.h ########## @@ -0,0 +1,95 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file 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 CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef NIFI_MINIFI_CPP_MOTIONDETECTOR_H +#define NIFI_MINIFI_CPP_MOTIONDETECTOR_H + +#include <atomic> + +#include <core/Resource.h> +#include <core/Processor.h> +#include <opencv2/opencv.hpp> +#include <opencv2/objdetect.hpp> +#include <opencv2/imgproc.hpp> +#include "FrameIO.h" + +#include <iomanip> +#include <ctime> + +namespace org { +namespace apache { +namespace nifi { +namespace minifi { +namespace processors { + +class MotionDetector : public core::Processor { + + public: + + explicit MotionDetector(const std::string &name, utils::Identifier uuid = utils::Identifier()) + : Processor(name, uuid), + logger_(logging::LoggerFactory<MotionDetector>::getLogger()) { + } + + static core::Property ImageEncoding; + static core::Property MinInterestArea; + static core::Property Threshold; + static core::Property DilateIter; + static core::Property BackgroundFrame; + static core::Property PrevAsBackground; + + static core::Relationship Success; + static core::Relationship Failure; + + void initialize() override; + void onSchedule(core::ProcessContext *context, core::ProcessSessionFactory *sessionFactory) override; + void onTrigger(core::ProcessContext *context, core::ProcessSession *session) override { + logger_->log_error("onTrigger invocation with raw pointers is not implemented"); + } + void onTrigger(const std::shared_ptr<core::ProcessContext> &context, + const std::shared_ptr<core::ProcessSession> &session) override; + + void notifyStop() override; + + private: + + bool detectAndDraw(cv::Mat &frame); + + std::shared_ptr<logging::Logger> logger_; + std::mutex mutex_; + cv::Mat background_; + cv::Mat bg_img_; + std::string image_encoding_; + int min_area_; + int threshold_; + int dil_iter_; + bool update_bg_; + +// Background & Foreground seperation. +// std::vector<cv::Mat> history; Review comment: They are for "Background & Foreground extraction" features that I wanted earlier. However, after second thought, I think I will create a new processor for that later, since it can be useful itself. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
