Optimization of Discrete Anamorphic Stretch Transform and Phase Recovery for ECG Signal Compression.
Saved in:
| Title: | Optimization of Discrete Anamorphic Stretch Transform and Phase Recovery for ECG Signal Compression. |
|---|---|
| Authors: | Thilagavathy, R.1 (AUTHOR) thilagavathy@nitt.edu, Venkataramani, B.1 (AUTHOR) bvenki@nitt.edu |
| Source: | IETE Journal of Research. Oct2023, Vol. 69 Issue 10, p7106-7120. 15p. |
| Subjects: | Image compression, Run-length encoding, Discrete wavelet transforms, Data compression, Electrocardiography, Root-mean-squares |
| Abstract: | An ECG signal compression scheme using both Discrete Anamorphic Stretch Transform (DAST) and Discrete wavelet transform (DWT) is reported in the literature. In this scheme, a linear filter is used for the recovery of the phase of the DAST for the computation of inverse DAST. However, at a higher compression ratio, the phase recovered and the reconstructed signal became increasingly inaccurate. To overcome this problem, a phase recovery technique that uses only an adder with fixed offset is proposed in this paper. A scheme for optimizing the DAST kernels to increase the compression ratio is also proposed. To evaluate their effectiveness, the ECG signals of the MIT-BIH Arrhythmia database are compressed using 6 level 1D DWT and run-length encoding with and without DAST pre-compressor and their performances are compared. The phase of DAST of the ECG signals recovered using both linear filter and adder are computed and compared for different kernels. The proposed phase recovery scheme with the optimized sublinear and linear kernels provides a 12.2% and 10.91% increase in data compression ratio and 24.63% and 28.73% decrease in percentage root mean square difference (PRD) with 99.9% of energy packing efficiency (EPE) compared to the scheme using the filter. The compression scheme using DAST provides a 2.81 times higher compression ratio compared to that without DAST. The proposed compression scheme yields a higher Compression Ratio and lower PRD than those reported in the literature. It can be used as pre-compressor for the real time transmission of ECG signal with lower bandwidth. [ABSTRACT FROM AUTHOR] |
| Copyright of IETE Journal of Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| FullText | Links: – Type: pdflink Text: Availability: 1 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 174795155 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Optimization of Discrete Anamorphic Stretch Transform and Phase Recovery for ECG Signal Compression. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Thilagavathy%2C+R%2E%22">Thilagavathy, R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> thilagavathy@nitt.edu</i><br /><searchLink fieldCode="AR" term="%22Venkataramani%2C+B%2E%22">Venkataramani, B.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> bvenki@nitt.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22IETE+Journal+of+Research%22">IETE Journal of Research</searchLink>. Oct2023, Vol. 69 Issue 10, p7106-7120. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Image+compression%22">Image compression</searchLink><br /><searchLink fieldCode="DE" term="%22Run-length+encoding%22">Run-length encoding</searchLink><br /><searchLink fieldCode="DE" term="%22Discrete+wavelet+transforms%22">Discrete wavelet transforms</searchLink><br /><searchLink fieldCode="DE" term="%22Data+compression%22">Data compression</searchLink><br /><searchLink fieldCode="DE" term="%22Electrocardiography%22">Electrocardiography</searchLink><br /><searchLink fieldCode="DE" term="%22Root-mean-squares%22">Root-mean-squares</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: An ECG signal compression scheme using both Discrete Anamorphic Stretch Transform (DAST) and Discrete wavelet transform (DWT) is reported in the literature. In this scheme, a linear filter is used for the recovery of the phase of the DAST for the computation of inverse DAST. However, at a higher compression ratio, the phase recovered and the reconstructed signal became increasingly inaccurate. To overcome this problem, a phase recovery technique that uses only an adder with fixed offset is proposed in this paper. A scheme for optimizing the DAST kernels to increase the compression ratio is also proposed. To evaluate their effectiveness, the ECG signals of the MIT-BIH Arrhythmia database are compressed using 6 level 1D DWT and run-length encoding with and without DAST pre-compressor and their performances are compared. The phase of DAST of the ECG signals recovered using both linear filter and adder are computed and compared for different kernels. The proposed phase recovery scheme with the optimized sublinear and linear kernels provides a 12.2% and 10.91% increase in data compression ratio and 24.63% and 28.73% decrease in percentage root mean square difference (PRD) with 99.9% of energy packing efficiency (EPE) compared to the scheme using the filter. The compression scheme using DAST provides a 2.81 times higher compression ratio compared to that without DAST. The proposed compression scheme yields a higher Compression Ratio and lower PRD than those reported in the literature. It can be used as pre-compressor for the real time transmission of ECG signal with lower bandwidth. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of IETE Journal of Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=174795155 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1080/03772063.2021.2012281 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 7106 Subjects: – SubjectFull: Image compression Type: general – SubjectFull: Run-length encoding Type: general – SubjectFull: Discrete wavelet transforms Type: general – SubjectFull: Data compression Type: general – SubjectFull: Electrocardiography Type: general – SubjectFull: Root-mean-squares Type: general Titles: – TitleFull: Optimization of Discrete Anamorphic Stretch Transform and Phase Recovery for ECG Signal Compression. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Thilagavathy, R. – PersonEntity: Name: NameFull: Venkataramani, B. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 03772063 Numbering: – Type: volume Value: 69 – Type: issue Value: 10 Titles: – TitleFull: IETE Journal of Research Type: main |
| ResultId | 1 |
