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Sequence comparator

by Yoann Le Montagner

This plugin provides a convenient interface to measure and compare the differences between a reference sequence and several tested sequences. The user can chose among several the distance measure, such as mean square error, L1, maximum pixelwise, PSNR, SSIM, etc.

Publication Id
ICY-L2Q7P1
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Documentation

Sequence comparator screenshotThis plugin provides a convenient interface to measure and compare the differences between a reference sequence and several tested sequences. The user can visualize:

  • overall error measures, computed over either the whole or a sub-part of the compared sequences,
  • error map, indicating the points where the compared sequences differs.

For overall error measures, the user can chose the distance measure among:

  • L1 distance,
  • L2 distance,
  • maximum pixelwise (also known as L-infinite distance),
  • mean square error and root mean square error (the latter being equal to the L2 distance, up to a normalization factor),
  • peak signal to noise ratio (PSNR),
  • structural similarity index (SSIM).

The user can also choose how the error map are computed among the following modes:

  • absolute difference,
  • difference,
  • SSIM map.

These features are also available within the protocol framework provided by the Blocks plugin.