Mr. Hui Yi Profile

Hui Yi

at Central South Univ

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Proceedings Article | 6 May 2019 Paper

Lesion location algorithm of epilepsy signals based on image features

Hui Yi, Chunsheng Wang, Wei Wang, Zijian Liu

Proceedings Volume 11069, 110690U (2019) https://doi.org/10.1117/12.2524206

KEYWORDS: Lead, Electroencephalography, Epilepsy, Image processing, Image filtering, Filtering (signal processing), Signal processing, Electronic filtering, Feature extraction, Wavelets

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Aiming at the problem that the traditional one - dimensional linear processing method can’t effectively extract the characteristic information of the weak signal of the brain, this paper presents a lesion location algorithm of electroencephalogram (EEG) based on image features. Image features is introduced into epileptic signal processing, which can extract feature information and locate lesions in EEG weak signals. First of all, the theoretical basis of onedimensional signal reconstruction into two-dimensional signal is described in this paper. Then, in order to make the image have the intuitionistic distinguishing feature, the Hadamard transform is introduced, which amplifies the original degree of chaos and provides the basis for qualitative and quantitative analysis. Finally, Gabor filter and Fourier spectrum analysis are used to process the Hadamard transformed image. The processed image retains some larger details such as the edge and contrast, which makes the processed image result more intuitive. The lesion lead images can be distinguished by the intuitive differentiation. At the same time, the mean value, contrast and energy entropy of the Fourier spectrum are calculated, and the results are clear. The effectiveness of the proposed method is verified by real epileptic EEG data.

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