Motion Vector

In video compression, a motion vector is the key element in the motion estimation process. It is used to represent a macroblock in a picture based on the position of this macroblock (or a similar one) in another picture, called the reference picture.

The H.264/MPEG-4 AVC standard defines motion vector as:

motion vector: A two-dimensional vector used for inter prediction that provides an offset from the coordinates in the decoded picture to the coordinates in a reference picture.

Famous quotes containing the word motion:

    “A movement is only composed of people moving. To feel its warmth and motion around us is the end as well as the means.”
    —Gloria Steinem (b. 1934)