File:Clock Tower from Su Song's Book desmear.JPG

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Original file ‎(908 × 1,366 pixels, file size: 661 KB, MIME type: image/jpeg)

Captions

Captions

The water-powered mechanism of Su Song's astronomical clock tower

Summary[edit]

Description
English: File:Clock_Tower_from_Su_Song's_Book.JPG with smear removed by mixing channels:
  • Red: 0.2 green + blue
  • Green: 0.4 green + 0.65 blue
  • Blue: blue
as red is badly smeared, green is slightly smeared but has least noise, and blue is not smeared but has most noise.
Date
Source File:Clock_Tower_from_Su_Song's_Book.JPG
Author Su Song

Licensing[edit]

Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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Date/TimeThumbnailDimensionsUserComment
current12:50, 14 July 2015Thumbnail for version as of 12:50, 14 July 2015908 × 1,366 (661 KB)Cmglee (talk | contribs)User created page with UploadWizard

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