Made it work for Opencv2.4.9 + VS2013

1. Deleted the cvReleaseImage(&image_calibration)
since cvResize is different from Opencv2.1.0.
image_calibration may not exist any more.

2. Deleted many comments. Looks cleaner.
Revert "Made it work for Opencv2.4.9 + VS2013"

This reverts commit 26d98590c4f76f7cda70fdde1d0878fb479b9838.