added ofxaddons thumbnail
added erode and dilate
Merge branch 'master' of github.com:kylemcdonald/ofxCv
updated readme with draw info
minor bug in calcOpticalFlow when using lastImage and currentImage parameters
Merge pull request #90 from samatt/master

minor bug in calcOpticalFlow when using lastImage and currentImage param...
added notes about installation
Merge branch 'master' of github.com:kylemcdonald/ofxCv
added resetFlow() , fixed NaN for switching videos by selectively applying use initial flow flag. added has flow checks for offset and position
fixed spacing
implemented resetFlow() for pyrLK. clearing last image, calling resetFeaturesToTrack() and clearing prevPoints
Merge pull request #91 from samatt/inital-flow-fix

added resetFlow() , fixed NaN for switching videos by selectively applyi...
added rotate90 and moved allocation check code from imitate() to allocate()
added flip
added overloaded loadProjectionMatrix with viewportRect argument
added overloaded loadProjectionMatrix with viewportRect argument
added setter for Intrinsics::imageSize
also use viewport width/height for frustum computation for consistency.
(has to be equal to imageSize to get the principalPoint right anyway)
fixed whitespace
replaced viewport rectangle by a position offset to simplify client apps