vector quantization

A lossy video compression technique that analyzes blocks of video pixels to determine their vectors, or frequencies. Prior to transmission, the video codec consults a codebook that contains a number of standard abbreviated vector descriptions in the form of codewords.The codec selects the codeword that produces the lowest level of distortion and outputs that to the channel. A matching codec associated with the receiver reverses the process. See also channel, codec, frequency, lossy compression, pixel, vector, and video.