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Embedded image compression using MLP based on wavelet pixel classification and sorting.

机译:使用基于小波像素分类和排序的MLP进行嵌入式图像压缩。

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摘要

The definition of image compression is to reduce the data, which represents the image. The redundant data is removed without compromising much on the quality of an image. Before storing or transmitting, transformation is applied to the image. By applying a transformation, one can obtain statistically uncorrelated data set. In the reconstruction phase the image is decompressed to get the original image or an image which is as near to original as possible.; The three basic data redundancies are coding redundancy, interpixel redundancy, and the psychovisual redundancy. Most of the compression algorithms work by reducing or eliminating one or more of these data redundancies.; The wavelet transform, transforms the signals into different subbands. The four subbands are LL, LH, HL, and HH. These four subbands represents the sub-images in those subspaces. Once the sub-images has been formed one can use the back propagation algorithm with MLP to find out the corresponding weight matrix and the final subband outputs.
机译:图像压缩的定义是减少代表图像的数据。删除冗余数据时不会影响图像质量。在存储或传输之前,对图像进行变换。通过应用转换,可以获得统计上不相关的数据集。在重建阶段,对图像进行解压缩以获得原始图像或尽可能接近原始图像的图像。三个基本数据冗余是编码冗余,像素间冗余和心理视觉冗余。大多数压缩算法通过减少或消除这些数据冗余中的一个或多个来工作。小波变换将信号变换为不同的子带。四个子带是LL,LH,HL和HH。这四个子带表示那些子空间中的子图像。一旦形成了子图像,就可以使用带有MLP的反向传播算法来找出相应的权重矩阵和最终的子带输出。

著录项

  • 作者

    Singh, Pawandeep.;

  • 作者单位

    Texas A&M University - Kingsville.;

  • 授予单位 Texas A&M University - Kingsville.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 M.S.
  • 年度 2005
  • 页码 55 p.
  • 总页数 55
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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