Subversion Repositories seema-scanner

#include <opencv2/opencv.hpp>

cv::Mat DLP3000InterpImage(cv::Mat I){

    //DLP3000INTERPIMAGE Interpolates a 684 x 608 image for projection on the DLP3000

    //diamond pixel array from a FWVGA image at 853 x 480.

    //

    //  Input parameter:

    //      C (853 x 480 pixels): input image of type double

    //

    //  Output parameter:

    //      I (684 x 608 matrix): output image

    //

    //  Note that using a 853 x 480 provides the correct aspect ratio for projecting on the DLP3000.

    //  Note that the code assumes that the image is projected 1:1 aka "short-axis flip".

    //

    //  DTU 2013, Jakob Wilm

    cv::Mat ret(684, 608, CV_8U);

    if(I.rows != 480 || I.cols != 853){

        std::cerr << "Input image has wrong dimensions" << std::endl;

        return ret;

    }

    // interpolation points

    float mdiag = 853.0/607.5; // mirror diagonal in input pixels

    cv::Mat mapX(684, 608, CV_32F), mapY(684, 608, CV_32F);

    for(unsigned int row=0; row<684; row++){

        for(unsigned int col=0; col<608; col++){

            mapY.at<float>(row,col) = row * 479.0/683.0;

            mapX.at<float>(row,col) = col*(852.0-0.5*mdiag)/607.0 + (row%2)*0.5*mdiag;

        }

    }

    cv::remap(I, ret, mapX, mapY, cv::INTER_LINEAR);

    return ret;

}