  Detailed exploration on Brain Computer Interface (BCI) and its recent trends
has been done in this paper. Work is being done to identify objects, images,
videos and their color compositions. Efforts are on the way in understanding
speech, words, emotions, feelings and moods. When humans watch the surrounding
environment, visual data is processed by the brain, and it is possible to
reconstruct the same on the screen with some appreciable accuracy by analyzing
the physiological data. This data is acquired by using one of the non-invasive
techniques like electroencephalography (EEG) in BCI. The acquired signal is to
be translated to produce the image on to the screen. This paper also lays
suitable directions for future work.
