Patent ID: 8817875

Claim:
A system, comprising: a module to receive pixel values associated with a sequence of video frames; a prediction module to estimate pixel values of at least a portion of the video frames in accordance with one or more models, and to generate a sequence of symbols corresponding to differences between the estimated pixel values and corresponding received pixel values; a module to arithmetically encode a sequence of symbols as a floating point integer code value, including to associate the symbols with portions of a code range such that each respective one of the symbols is assigned a corresponding consecutive portion of the code range in proportion to a frequency of occurrence of each respective one of the symbols within the sequence of symbols, and to iteratively refine the code range in accordance with the proportions associated with the symbols to define an output code value representing a compressed form of the sequence of symbols; an underflow module to reduce a number of digits in one or more of a lower limit and an upper limit of the code range when the most significant digits of the lower limit and the upper limit differ by one and a number of digits of at least one of the lower limit and the upper limit exceed a threshold; and a module to format and output the code value, symbol counts associated with the code value, and un-encoded reference pixel values in a data stream, wherein the prediction module is configured to represent pixel values with multiple-bytes including a most significant byte and a least significant byte, and wherein the prediction module includes: a most significant byte model to estimate most significant byte pixel values from first byte reference pixel values; and a least significant byte model to estimate least significant byte pixel values from least significant byte reference pixel values, and wherein: the sequence of video frames corresponds to a sequence of infrared images; wherein adjacent ones of the images are substantially similar to one another; the prediction module is configured to represent the symbols with multiple-bytes, including a most significant byte and a least significant byte; and differences between pixel values of the sequence of infrared images and corresponding pixel values of a reference image are relatively small, the symbols are predominantly relatively small positive and negative values, and the most significant bytes of the symbols are predominantly one of all zeros and all ones.