Analysis of Finite Wordlength Effect in ID-DCT Transfom Coding

Huang Xiaojian; Quan Ziyi

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Analysis of Finite Wordlength Effect in ID-DCT Transfom Coding

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- Analysis of Finite Wordlength Effect in ID-DCT Transfom Coding
- Acta Electronica Sinica Issue 7, Pages: 37-45(1993)
- 作者机构：
  
  1. 北京邮电学院无线电工程系
  2. 北京邮电学院无线电工程系北京 100088
- 作者简介：
- 基金信息：
- DOI：
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- Published：1993
- 稿件说明：
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[1]黄孝建,全子一.一维DCT变换编码的有限字长效应分析[J].电子学报,1993,{4}(07):37-45.

Huang Xiaojian, Quan Ziyi. Analysis of Finite Wordlength Effect in ID-DCT Transfom Coding[J]. Acta Electronica Sinica, 1993, (7): 37-45.
[1]黄孝建,全子一.一维DCT变换编码的有限字长效应分析[J].电子学报,1993,{4}(07):37-45. DOI：

Huang Xiaojian, Quan Ziyi. Analysis of Finite Wordlength Effect in ID-DCT Transfom Coding[J]. Acta Electronica Sinica, 1993, (7): 37-45. DOI：

摘要

本文对一维DCT变换压缩编码中变换域系数二次量化引起的图象损伤进行了频域和空间域分析

得出了一些有用的结论。通过对变换矩阵系数字长的分析和计算机模拟

为一维DCT变换压缩编码硬件实现时字长的确定提供了依据。硬件实验结果印证了上述分析的结论。

Abstract

The image damage by transform coefficients quantization in ID-DCT transform compression coding is analysed on frequency domain and space domain.Some useful results are obtained.It provides scientific basis for word-length determination in real-time hardware implementation of ID-DCT image coding by wordlength analysis of transform matrix coefficient and computer similation.The results of hardware test confirm the conclusions from this analysis.

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