testccc/avgfilter.cpp

#include "avgfilter.h"
#include <QDebug>

avgfilter::avgfilter(QObject *parent)
    : QObject{parent}
{
    thread = new QThread();
    this->moveToThread(thread);
    thread->start();
    ready = false;
}

void avgfilter::setpara(int para)
{
    this->para = para;
    if(para!=0){
        on();
    }
    else if(para==0){
        off();
    }
    qDebug()<<"para = "<<para;
}

void avgfilter::on()
{
    ready = true;
}

void avgfilter::off()
{
    ready = false;
}
void avgfilter::slotprocimg(cv::Mat img)
{
    if(ready){
        if(lastmat.empty()){
            img.copyTo(lastmat);
            emit signalsendimg(img);
        }
        else{

            cv::Mat dst = (256-para)*(img/256)+para*(lastmat/256);

            for(int i = 0;i< img.rows;i++){
                for(int j = 0;j<img.cols;j++){
                    if(abs(int(img.at<ushort>(i,j))- int(dst.at<ushort>(i,j)))>(320))
                        dst.at<ushort>(i,j) = img.at<ushort>(i,j);
                }
            }

            dst.copyTo(lastmat);
            emit signalsendimg(dst);
        }
    }
    else{
        cv::Mat temp;
        img.copyTo(temp);
        emit signalsendimg(temp);
    }
}