Summary Of Se D Da Ra

495 views
394 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
495
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
1
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Summary Of Se D Da Ra

  1. 1. Matsuda Kazuki 2009/9/5
  2. 2. Written by Yoshifumi Sudo, Naoshi Baba, Noriaki Miura, Satoru Ueno, and Reizaburo Kitai
  3. 3. <ul><li>Shift and Add Operation is very useful to get high-resolution image from atmospherically degraded data. </li></ul><ul><li>The self-deconvolving data reconstruction algorithm (SeDDaRA) is to augment high-speed-frequency components in solar speckle images. </li></ul><ul><li>Self-deconvolving image -> SAA -> get High-resolution image. </li></ul>
  4. 4. <ul><li>Adaptive Optics mitigate atmospheric turbulence in real time. </li></ul><ul><li>On the other hand, there are various a posteriori methods. </li></ul><ul><ul><li>Stellar speckle imaging – SAA is simplest in this category. </li></ul></ul><ul><ul><ul><ul><li>Can applied to solar image. </li></ul></ul></ul></ul><ul><li>Key point of SAA method is shifting image on point position of the instantaneous PSF. </li></ul><ul><ul><li>But it is difficult to apply to extended object. </li></ul></ul>
  5. 5. <ul><li>Some alternative method is required to find shifting width. </li></ul><ul><ul><li>Co-relation. On Granulation. From reference frame. </li></ul></ul><ul><li>But, in this way, quality of SAA result is determined by selection of reference frame. </li></ul><ul><li>It is desirable that human’s selection independent results (& method). </li></ul>
  6. 6. <ul><li>1 st – self-deconvolving. </li></ul><ul><li>2 nd – SAA with reference frame. </li></ul><ul><ul><li>Reference frame is determined from RMSC. </li></ul></ul>
  7. 7. <ul><li>The i-th specle image g i (x,y) is writen </li></ul><ul><li>The Fourier Transform is </li></ul><ul><li>Deconvolution by using a “pseudo Wiener filter Di(u,v)” </li></ul>
  8. 8. <ul><li>H is low frequency of G-N </li></ul>
  9. 9. <ul><li>SAA </li></ul><ul><li>Reference frame is determined by RMSC </li></ul><ul><li>A Frame which had Highest RMSC is reference frame. </li></ul>
  10. 10. <ul><li>Fix reference frame and SAA method. </li></ul><ul><li>One more SAA method under the condition that reference frame is 1 st result. </li></ul><ul><li>Finish. </li></ul>

×