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4.4 Improvements to the PFGS Framework 75
• LQPi—Low-quality predicted image that is generated by motion compensation
from the lower quality reference
• LQPd—Difference between LQPi and the original image
• LQPD—DCT coefficients of LQPd
• LQBR—DCT residues that are produced by subtracting the already encoded
(quantized and then de-quantized) DCT coefficients in the base layer from LQPD
coefficients
• LQPR—DCT residues that are produced by subtracting the already encoded
DCT coefficients in the previous layers from the LQPD coefficients
• HQPi—A high-quality predicted image that is generated by motion compensa-
tion from the higher quality reference
• HQPd—Differences between HQPi and the original image
• HQPD—DCT coefficients of HQPd
• HQPR—DCT residues ...