The Impact of KLT Coder on the Image Distortion in Astronomy
Presented paper is devoted to the application of Karhunen-Loève transform (KLT) for compression and to study of KLT impact on the image distortion in astronomy. This transform is an optimal fit for images with Gaussian probability density function in order to minimize the root mean square error (RMS...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Astronomy |
| Online Access: | http://dx.doi.org/10.1155/2015/484379 |
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| _version_ | 1841524885077098496 |
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| author | Petr Pata |
| author_facet | Petr Pata |
| author_sort | Petr Pata |
| collection | DOAJ |
| description | Presented paper is devoted to the application of Karhunen-Loève transform (KLT) for compression and to study of KLT impact on the image distortion in astronomy. This transform is an optimal fit for images with Gaussian probability density function in order to minimize the root mean square error (RMSE). The main part of the encoder is proposed in relation to statistical image properties. Selected astronomical image processing algorithms are used for the encoder testing. The astrometry and point spread function distortion are selected as the most important criteria. The results are compared with JPEG2000 standard. The KLT encoder provides better results from the RMSE point of view. These results are promising and show the novel approach to the design of lossy image compression algorithms and also suitability for algorithms of image data structuring for retrieving, transfer, and distribution. |
| format | Article |
| id | doaj-art-b18c1f6d5718428f92fab6fbb8e54a6a |
| institution | Kabale University |
| issn | 1687-7969 1687-7977 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Astronomy |
| spelling | doaj-art-b18c1f6d5718428f92fab6fbb8e54a6a2025-02-03T05:47:11ZengWileyAdvances in Astronomy1687-79691687-79772015-01-01201510.1155/2015/484379484379The Impact of KLT Coder on the Image Distortion in AstronomyPetr Pata0Faculty of Electrical Engineering, Czech Technical University in Prague, 166 27 Prague, Czech RepublicPresented paper is devoted to the application of Karhunen-Loève transform (KLT) for compression and to study of KLT impact on the image distortion in astronomy. This transform is an optimal fit for images with Gaussian probability density function in order to minimize the root mean square error (RMSE). The main part of the encoder is proposed in relation to statistical image properties. Selected astronomical image processing algorithms are used for the encoder testing. The astrometry and point spread function distortion are selected as the most important criteria. The results are compared with JPEG2000 standard. The KLT encoder provides better results from the RMSE point of view. These results are promising and show the novel approach to the design of lossy image compression algorithms and also suitability for algorithms of image data structuring for retrieving, transfer, and distribution.http://dx.doi.org/10.1155/2015/484379 |
| spellingShingle | Petr Pata The Impact of KLT Coder on the Image Distortion in Astronomy Advances in Astronomy |
| title | The Impact of KLT Coder on the Image Distortion in Astronomy |
| title_full | The Impact of KLT Coder on the Image Distortion in Astronomy |
| title_fullStr | The Impact of KLT Coder on the Image Distortion in Astronomy |
| title_full_unstemmed | The Impact of KLT Coder on the Image Distortion in Astronomy |
| title_short | The Impact of KLT Coder on the Image Distortion in Astronomy |
| title_sort | impact of klt coder on the image distortion in astronomy |
| url | http://dx.doi.org/10.1155/2015/484379 |
| work_keys_str_mv | AT petrpata theimpactofkltcoderontheimagedistortioninastronomy AT petrpata impactofkltcoderontheimagedistortioninastronomy |