function to load an image object from given filename
CV_LoadImage(filename,loadtype)
name of file to be opened
desired load method
This function can be used for loading a previously stored image
loadtype can take the following values:
less than 0 -> image is loaded as is (with alpha channel)
0 -> image is loaded as greyscale
greater than 0 -> 3 channel color image is loaded
This is curretly dummy function. It provides no functionality but is required for providing support for generating C code for OpenCV