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Table 1 Mean, standard deviation and error standard deviation for regions A, B, and C.

From: A Level Set Filter for Speckle Reduction in SAR Images

  A Region B Region Vertical line of = 417
  Raw data Raw data Raw data
Raw image Mean: 186.515 Mean: 102.284 Mean: 115.445
  Std: 7356.633 Std: 557.088 Std: 3807.465
  Error std: 0.000 Error std: 0.000 Error std: 0.000
Degraded image by speckle Mean: 168.146 Mean: 96.008 Mean: 107.806
  Std: 6474.725 Std: 1063.434 Std: 3551.714
  Error std: 1694.889 Error std: 576.947 Error std: 864.951
Lee Filter Mean: 167.054 Mean: 95.558 Mean: 106.755
  Std: 5318.111 Std: 508.609 Std: 2891.598
  Error std: 796.122 Error std: 110.071 Error std: 285.072
Enhanced Lee Filter Mean: 170.137 Mean: 98.565 Mean: 109.898
  Std: 5490.712 Std: 521.443 Std: 2975.532
  Error std: 725.142 Error std: 85.426 Error std: 283.281
Kuan Filter Mean: 167.667 Mean: 96.006 Mean: 107.250
  Std: 5258.601 Std: 508.466 Std: 2866.156
  Error std: 756.300 Error std: 104.209 Error std: 266.664
Frost Filter Mean: 167.875 Mean: 95.998 Mean: 107.378
  Std: 5205.227 Std: 509.813 Std: 2849.575
  Error std: 737.993 Error std: 104.189 Error std: 253.703
Enhanced Frost Filter Mean: 170.349 Mean: 98.752 Mean: 110.125
  Std: 5432.889 Std: 510.254 Std: 2965.519
  Error std: 705.102 Error std: 76.273 Error std: 268.414
Gamma Filter Mean: 169.335 Mean: 97.692 Mean: 108.734
  Std: 5617.564 Std: 555.922 Std: 3026.878
  Error std: 777.002 Error std: 113.264 Error std: 326.011
Level set Filter Mean: 181.439 Mean: 90.712 Mean: 105.244
  Std: 7673.753 Std: 841.549 Std: 4245.700
  Error std: 420.243 Error std: 323.605 Error std: 376.056