Summary
In this chapter, we covered the common image processing objects in the GEM library. We understood how to combine the 2D and 3D graphics with digital images, videos, and/or live streams, using texture mapping. Similar to imaging software such as Photoshop and GIMP, we learned to apply filters to digital image, and combine multiple images with various effects. Other than the spatial effects, we also worked with temporal effects with delay and stop motion. Within one frame of image, we also learned to make sense of the content by performing background removal, or replacing part of the image with others using the chroma key effect, and producing a creative rendering of live stream video. Having learned some of the basic image processing techniques, we are now prepared to proceed with advanced image processing features on motion tracking and color tracking, that will be covered in further chapters.
