initial commit of highpass()
import and update of highpass
Merge pull request #7 from alexlib/image_processing

alex_lowpass_3
some housekeeping. added linebreaks and descriptions
added handle_imageborders8Bit into image_processing.c and image_processing.h to replace copy_images.
renamed copy_images to copy_images8Bit
BTW: Should we start with a naming-convention to disinguish 8 bit and 16-bit-ready routines?
Basicly we only need to change the datatype for the pointer array(s), but this would kill backward compatibility.
added description for split
added description for enhance
added some more descriptions
Merge branch 'image_processing' of https://github.com/alexlib/openptv into alexlib-image_processing

Conflicts:
	liboptv/src/image_processing.c
Merge pull request #9 from psteinhoff/alexlib-image_processing

Alexlib image processing
clean up after manual merge with alex's version
Merge pull request #11 from alexlib/image_processing

import latest changes from alexlib Image processing
pulled latest changes from alexlib-image_processing
Removed split function as proposed by alex in commit 92f28ac (92f28ace21c463e63ea769b4e4b7c198bd426f81)
removed 8 bit branding & connection to split in highpass function
Merge pull request #4 from psteinhoff/image_processing

Image processing