Motion video compression system with buffer empty/fill look-ahead bit allocation
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United States of America Patent
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Feb 17, 1998
Grant Date -
N/A
app pub date -
Jan 25, 1996
filing date -
Jan 25, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Systems and methods are provided for allocating bits to pictures in accordance with the bit allocation constraints for operation at both constant and variable bit rates. The encoding complexity of each picture is modeled based on its spatial and temporal properties. Based on the modeling, a number of bits is allocated in advance to each picture. Each picture is then compressed according to the bits allocated. Based on the difference between the achieved and desired bit rates and on the availability of computational resources, a second pass or multiple passes may be performed to improve the coding.
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