opencv-vala-matrix-example

/*
 * Simple example on how to test OpenCV library
 * It loads an image (loaded as grayscale) and converts it to a Matrix.
 * The matrix is transposed and read each pixel.
 * Author: A.Lepe (dev@alepe.com)
 *
 * To compile: valac --pkg opencv opencv.vala
 */

using OpenCV;

void main (string[] args) {
    IPL.Image img = new IPL.Image.load("/var/www/test/image.jpg", IPL.Image.LoadType.GRAYSCALE);
    stdout.printf("Width: %d\n", img.width);
    stdout.printf("Height: %d\n", img.height);

    Matrix mat = new Matrix(img.height, img.width, OpenCV.Type.FC32_1);
    OpenCV.Array.convert(img, mat);
    Matrix matt = new Matrix(img.width, img.height, OpenCV.Type.FC32_1);
    mat.transpose(matt);

    for(int x = 0; x < img.width - 1; x++) {
        for(int y = 0; y < img.height - 1; y++) {
            stdout.printf("%d ", (int)matt.get(x,y));
        }
        stdout.printf("\n");
    }
}