estimateaffine3d example c++

Example of estimateAffine3D in C++

#include <opencv2/opencv.hpp>

int main() {
    // Define source and destination 3D point sets
    std::vector<cv::Point3f> srcPoints, dstPoints;

    // ... (populate srcPoints and dstPoints)

    // Estimate the 3D affine transformation matrix
    cv::Mat affineMatrix = cv::estimateAffine3D(srcPoints, dstPoints);

    // Print the estimated affine transformation matrix
    std::cout << "Estimated Affine Transformation Matrix:" << std::endl;
    std::cout << affineMatrix << std::endl;

    return 0;
}

Explanation:

1. Include the OpenCV library: We include the OpenCV library to use its functions for computer vision tasks.

2. Define source and destination 3D point sets: We define two vectors, srcPoints and dstPoints, to hold the source and destination 3D points, respectively.

3. Populate source and destination point sets: We populate the source and destination point sets with the corresponding 3D points.

4. Estimate the 3D affine transformation matrix: We use the cv::estimateAffine3D function to estimate the 3D affine transformation matrix that transforms the source points to the destination points.

5. Print the estimated affine transformation matrix: We print the estimated 3D affine transformation matrix to the console for further use or analysis.