Let's now try to port to Clojure the `opencv java tutorial sample <http://docs.opencv.org/2.4.4-beta/doc/tutorials/introduction/desktop_java/java_dev_intro.html>`_.
Instead of writing it in a source file we're going to evaluate it at the
REPL.
Following is the original Java source code of the cited sample.
.. code:: java
import org.opencv.core.Mat;
import org.opencv.core.CvType;
import org.opencv.core.Scalar;
class SimpleSample {
static{ System.loadLibrary("opencv_java244"); }
public static void main(String[] args) {
Mat m = new Mat(5, 10, CvType.CV_8UC1, new Scalar(0));
System.out.println("OpenCV Mat: " + m);
Mat mr1 = m.row(1);
mr1.setTo(new Scalar(1));
Mat mc5 = m.col(5);
mc5.setTo(new Scalar(5));
System.out.println("OpenCV Mat data:\n" + m.dump());
}
}
Add injections to the project
-----------------------------
Before start coding, we'd like to eliminate the boring need of
interactively loading the native opencv lib any time we start a new REPL
to interact with it.
First, stop the REPL by evaluating the ``(exit)`` expression at the REPL
prompt.
.. code:: clojure
user=> (exit)
Bye for now!
Then open your ``project.clj`` file and edit it as follows:
