File:CMB Wiener filter example.png
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Summary
| Description |
English: This figure demonstrates the effect of a Wiener filter on a noisy simulated observation of the Cosmic Microwave Background (CMB). The input data is shown on the left, and is the sum of CMB, which is a Gaussian random field which is strongly correlated in real space (but diagonal in frequency space), and a noise field, which has independent values in each pixel, but increasing standard deviation towards the edge. The signal and noise have covariance and respectively.
The center panel shows the Wiener-filtered result, computed via . The right panel shows the true input signal. |
| Date | 3 October 2014 (original upload date) |
| Source | Transferred from en.wikipedia to Commons. |
| Author | Amaurea at English Wikipedia |
Licensing
Amaurea at English Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
 
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
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Original upload log
The original description page was here. All following user names refer to en.wikipedia.
| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 2014-10-03 17:45 | 1560×557× (1993585 bytes) | Amaurea | This figure demonstrates the effect of a Wiener filter on a [[:File:CMB_Wiener_filter_example,_noisy_data.png|noisy simulated observation]] of the [[Cosmic Microwave Background]] (CMB). The input data <math>d</d> is shown on the left, and is the sum of... |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:05, 18 October 2015 | | 1,560 × 557 (1.9 MB) | Amaurea | Transferred from en.wikipedia |
File usage
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