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- W2377888492 abstract "A dynamic threshold rate control algorithm based on linear prediction was proposed to resolve the computation complexity and large memory usage in JPEG2000 rate control algorithm.By analyzing the characteristic of wavelet transform and the image's edge and texture features,the truncation point thresholds of rate-distortion slope were predicted linearly based on the image data compression ratio,which were modified dynamically to meet the requirements of the bit-rate during the encoding procedure.The algorithm real-time truncates the code-stream,adequately reduces the coding complexity and memory size,meanwhile keeps nearly the same image visual quality and speeds up the encoder's performance.Compared with the conventional algorithm in JPEG2000 standard,the proposed algorithm has approximate 0.1—0.3 dB reduction in peak signal-to-noise ratio(PSNR),and above 41.6% computation and 43.2% memory usage can be decreased in the case of compression factor greater than 8." @default.
- W2377888492 created "2016-06-24" @default.
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- W2377888492 date "2008-01-01" @default.
- W2377888492 modified "2023-09-23" @default.
- W2377888492 title "Dynamic threshold JPEG2000 rate control algorithm based on linear prediction" @default.
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