how to reduce motion blur in picture? - opencv

Question

I am trying to detect the QR data from a blurry image and have not been successful till now.
I have tried a couple of morphology operations on the image and still did not get the data embedded in it.
How could I improve the situation?
I have tried this so far:
#include <iostream>
#include <opencv2/highgui.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/imgproc.hpp>
#include <opencv2/objdetect.hpp>
#include <opencv2/barcode.hpp>
int main() {
cv::Mat imageMat = cv::imread("/Users/apple/Downloads/36.jpg");
if(imageMat.empty()) {
std::cout << "Image not present and can not be opened" << std::endl;
return 0;
}
cv::Mat imageGray, imageBlur, imageCanny, imageDilated, imageEroded, thresholdImage;
cv::cvtColor(imageMat, imageGray, cv::COLOR_BGR2GRAY);
cv::GaussianBlur(imageGray, imageBlur, cv::Size(3,3), 3, 0);
std::cout << "Gaussian blur done" << std::endl;
// cv::Canny(imageBlur, imageCanny, 25, 75);
cv::Mat kernel = cv::getStructuringElement(cv::MORPH_RECT, cv::Size(3,3));
cv::dilate(imageBlur, imageDilated, kernel);
cv::erode(imageDilated, imageEroded, kernel);
cv::threshold(imageEroded, thresholdImage, 5, 255, cv::THRESH_BINARY+cv::THRESH_OTSU);
std::cout << "Threshold done" << std::endl;
// Reads the barcode/dat
cv::QRCodeDetector qrDecoder;
std::string decodedData = qrDecoder.detectAndDecode(thresholdImage);
std::cout << "Decoded data = " << decodedData << std::endl;
This code is not decoding the data from the image which has blurry QR code. What would you guys prefer to unblur the image and get the data embedded in it? Increase the contrast? Increase the brightness?
Any document can be helpful too.
Thank you in advance.