Why is computer vision so hard?

Video technology makes it possible to use video surveillance not only for security and safety, but for all kinds of uses to cost-effectively monitor operations for business optimization and process improvement.

Computer Vision: Algorithms and Applications, 1st ed. © 2010 Richard Szeliski, Microsoft Research. Welcome to the Web 
Computer Vision is one of the hottest topics in artificial intelligence. It is making
After reading this post, you will know: The goal of the field of computer vision and its distinctness from image processing. What makes the problem 

Video Surveillance software enables new level of home security & surveillance.

Artificial intelligence is giving surveillance cameras digital brains to match their eyes, letting them analyze live video with no humans necessary. This could be good news for public safety, helping police and first responders more easily spot crimes and accidents and have a range of scientific and industrial applications. But it also raises serious questions about the future of privacy and poses novel risks to social justice.
Video Tutorial:
1) How to use video surveillance software?
2) How to add new video surveillance devices?
3) How to view video surveillance archive?
4) How to create Live broadcast from IP camera?
5) How to upload events to youtube automatically?
Video Surveillance Software
Video tutorial