Data training method for applying deep learning to compressed sensing reconstruction

A technology of compressed sensing and data training, which is applied in the field of data training where deep learning is applied to compressed sensing reconstruction, which can solve the problems that cannot be directly applied to compressed sensing reconstruction, and achieve the effect of improving the accuracy of signal reconstruction

Active Publication Date: 2018-11-02
HUBEI UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome the deficiencies in the above-mentioned prior art, the object of the present invention is to propose a data training method for applying deep learning to compressed sensing reconstruction, construct a residual-feature vector pair model, and guide the pre-training of real data to deep neural networks. Solve the problem that deep learning techniques cannot be directly applied to compressed sensing reconstruction

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[0020] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the examples. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0021] A data training method for applying deep learning to compressed sensing reconstruction provided by an embodiment of the present invention includes the following steps:

[0022] Step 1. Signal sparsification. Select a real data (a voice or an image) as the signal x∈R N , according to the characteristics of the signal, select the sparse basis Ψ∈R N×N , calculate the coefficient s=Ψ of the signal x under the sparse basis Ψ -1 x. Among them, the sparse base can choose an orthogonal wavelet transform base, a discrete cosine transform base or other transform bases, and the num...

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Abstract

The invention belongs to the field of a compressed sensing reconstruction technology and deep learning, and particularly relates to a data training method for applying deep learning to compressed sensing reconstruction. By generating a residual-feature vector pair, a one-to-one corresponding relationship of indexes of a residual and a most relevant atom is established, so that a deep neural network can learn and train signal features in data, and thus, when a deep learning technology is applied to a compressed sensing reconstruction algorithm, an optimal atom can be accurately searched, and signal reconstruction accuracy is improved.

Description

technical field [0001] The invention belongs to the fields of compressed sensing reconstruction technology and deep learning, and in particular relates to a data training method for applying deep learning to compressed sensing reconstruction. Background technique [0002] With the development of social informatization, the amount of data collected and processed has increased sharply, and the requirements for sensor sampling rate, storage device and transmission bandwidth are getting higher and higher. The traditional signal processing method is to first sample at a high rate and then compress it before storage or transmission. This method will cause a lot of waste of sampled data. As a result, the compressed sensing theory emerged, which can collect signals at a rate much lower than the Nyquist sampling frequency, reconstruct the original signal with high precision, and complete compression while collecting the signal. This theory is widely used in medical signal processing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/2136G06F18/214
Inventor 曾春艳武明虎万相奎熊炜刘敏赵楠朱莉李利荣王娟饶哲恒
Owner HUBEI UNIV OF TECH
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