Image classification and tagging, Face detection and Video recognition are use CASES of machine vision. So option “i”,”iii”,”iv” are correct answers.

Image search systems use deep learning for image classification and automatic tagging, which allows images to be accessible through a STANDARD search query. For example: companies such as Facebook use deep nets to scan pictures for faces at many different angles, and then label the face with the proper name.

Face detection is a computer technology being USED in a variety of applications that identifies human faces in digital images. Deep nets are also used to recognize objects within images which ALLOW for images to be searchable based on the objects within them.

Video recognition systems are important tools for driverless cars, remote robots, THEFT detection etc. Typically video is an ordered set of frames of same resolution. It has got two parts – video stream and video sequence. Video stream is an ongoing video for online real-time procession. Video sequence is a video of fixed length.