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[experiments/opencv.git] / perspective-transform / opencv-perspective-transform.c

diff --git a/perspective-transform/opencv-perspective-transform.c b/perspective-transform/opencv-perspective-transform.c
index 672795a..270f7f3 100644 (file)
--- a/perspective-transform/opencv-perspective-transform.c
+++ b/perspective-transform/opencv-perspective-transform.c
@@ -1,3 +1,22 @@
+/* 
+ * opencv-perspective-transform - Example program for cvWarpPerspective()
+ *
+ * Copyright (C) 2013  Antonio Ospite <ospite@studenti.unina.it>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include <stdio.h>
 #include <errno.h>
 #include <opencv2/core/core_c.h>
@@ -35,14 +54,14 @@ int main(int argc, char *argv[])
        cvNamedWindow("Viewport", 0);
        cvResizeWindow("Viewport", WIDTH, HEIGHT);
 
-       /* Trasform only a part of the whole image */
+       /* Transform only a part of the whole image */
        viewport.x = 0;
        viewport.y = 0;
        viewport.width = WIDTH;
        viewport.height = HEIGHT;
        cvSetImageROI(image, viewport);
 
-       /* Calculate the prospective tranformation */
+       /* Calculate the perspective transform */
        src[0].x = 0;
        src[0].y = 0;
        src[1].x = WIDTH;
@@ -71,11 +90,11 @@ int main(int argc, char *argv[])
        perspective_matrix = cvGetPerspectiveTransform(src, dst,
                                                       perspective_matrix);
 
-       /* Create a new image and apply the prospective transformation */
+       /* Create a new image and apply the perspective transform */
        transformed_image = cvCreateImage(cvSize(WIDTH, HEIGHT), image->depth,
                                          image->nChannels);
        if (!transformed_image) {
-               fprintf(stderr, "Cannot create trasnformed image\n");
+               fprintf(stderr, "Cannot create transformed image\n");
                ret = -EINVAL;
                goto out_release_mat;
        }
@@ -90,6 +109,7 @@ int main(int argc, char *argv[])
 
        ret = 0;
 
+       cvReleaseImage(&transformed_image);
 out_release_mat:
        cvReleaseMat(&perspective_matrix);
 out_destroy_window: