Review of techniques and methods for object detection

Many Sensors are available for detection purpose in literature. Some of these are used to detect only warm bodies like human and animals these types of sensors are mostly used in home security systems, some of the sensors are used to detect objects/obstacles which are mainly used in robotics to avoid the obstacle and some of the sensors are used for a special purpose like methane gas detection sensors. Some sensors are not suitable for every type of environment like an infrared sensor. Which does not give good results in a dark environment. This paper critically reviews and summarizes techniques and methods of these sensors but mainly focused will be on techniques and methods for object detection.