Super-resolution reconstruction of remote images based on three level training BP neural network

ZHU Fu-zhen; WANG Xiao-fei; DING Qun; HE Hong-chang

doi:10.3788/OPE.20152313.0723

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Super-resolution reconstruction of remote images based on three level training BP neural network

更新时间：2020-08-13

- Super-resolution reconstruction of remote images based on three level training BP neural network
- Optics and Precision Engineering Vol. 23, Issue 10z, Pages: 722-729(2015)
- 作者机构：
  
  1. 黑龙江大学电子工程学院, 黑龙江哈尔滨 150080
  2. 黑龙江大学电子工程学院电子科学与技术博士后流动站,黑龙江哈尔滨,150080
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152313.0723
  CLC： TP183;TP391.4
- Received：12 June 2015，
  
  Revised：20 June 2015，
  
  Published：14 November 2015
- 稿件说明：
移动端阅览
朱福珍, 王晓飞, 丁群等. 三级训练BP神经网络遥感图像超分辨重建[J]. 光学精密工程, 2015,23(10z): 722-729

ZHU Fu-zhen, WANG Xiao-fei, DING Qun etc. Super-resolution reconstruction of remote images based on three level training BP neural network[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 722-729
朱福珍, 王晓飞, 丁群等. 三级训练BP神经网络遥感图像超分辨重建[J]. 光学精密工程, 2015,23(10z): 722-729 DOI： 10.3788/OPE.20152313.0723.

ZHU Fu-zhen, WANG Xiao-fei, DING Qun etc. Super-resolution reconstruction of remote images based on three level training BP neural network[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 722-729 DOI： 10.3788/OPE.20152313.0723.

摘要

为了进一步提高遥感图像超分辨效果

降低超分辨重建时间

建立了一种三级训练BP神经网络(BP Neural Network

BPNN)超分辨重建方法

重点研究了网络训练样本的图像获取、输入输出样本的图像筛选、网络结构及训练算法的设计等。建立遥感图像退化模型

采用亚像素位移欠采样的方法获取网络训练样本;然后以方差比较法筛选出各级网络训练的输入/输出样本图像;最后

采用3组超分辨映射模式的遥感图像分别作为同一结构BPNN的输入/输出训练样本图像

连续进行3个周期的训练和学习

从而使图像尺寸映射模式和空间分辨率依次提高3次。仿真和泛化实验表明

三级训练BPNN较其他常见超分辨算法的峰值信噪比最高提高了6 dB左右

超分辨重建图像细节更丰富

重建时间大大降低

更适合遥感图像的实际应用。

Abstract

To further improve the effect of the super-resolution reconstruction(SRR) of remote sensing images and reduce its time-consuming

a three level training BP Neural Network(BPNN) was established. The research was focused on the acquisition of training samples

selections of input-output training samples

and the design of BPNN structure and training algorithm. A remote sensing image degradation model was set up. Then

training sample images were got by undersampled and subpixel-shifted method. The input-output training sample images were selected by variance comparison. Finally

three groups remote sensing images with different super-resolution mapping modes were used as the input-output training samples for the same BPNN. The net was continuously trained and learned three cycles

and image size and spatial resolution were improved three times. Experimental results indicate that the three level training BPNN for the SRR of remote sensing image can obtain better SRR effect and higher spatial resolution in the process of fitting remote sensing image SRR mapping

and the Peak Signal to Noise Ratio(PSNR) is improved about 6 dB than that of other ordinary super-resolution algorithm. For preserving more image details and reducing reconstructing time

it is more suitable for practical applications of remote sensing images.

关键词

Keywords

references

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Related Institution

School of Computer and Information Engineering， Harbin University of Commerce

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Key Laboratory of Optoelectronic Technology and System， Ministry of Education， Chongqing University

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