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- W2366851508 abstract "In order to solve the problem that there are huge data in the high resolution of aerial image,a novel rate adaptive control algorithm is proposed based on JPEG2000 rate control algorithm.The coefficient of sub-band is modeled as Gaussian distribution after wavelet decomposition of the image and removing the lowest frequency.Each block bit rate of the actual encoding has been achieved based on rate-distortion theory when the overall rate is certain,and the bit rate is real-time truncated in the entropy coding.The sub-band of the lowest frequency has been coded without distortion.This algorithm achieves real-time bit rate truncation and reduces the amount of encoder's computation and memory.Experimental results show that the proposed image compression method is significantly better than the whole band is Gaussian distribution,in conditions that the compression rate is not too high(0.5 bpp)." @default.
- W2366851508 created "2016-06-24" @default.
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- W2366851508 date "2011-01-01" @default.
- W2366851508 modified "2023-09-25" @default.
- W2366851508 title "An Adaptive Rate Control Algorithm for JPEG2000 Based on Optimal Rate-distortion" @default.
- W2366851508 hasPublicationYear "2011" @default.
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