My activities here change with time. I improve images and can remove watermarks, clone parts of the image and reduce regular noise (FFT filtering); I also draw crystal structures from CIF files and can provide CIF files for many solids. More information can be found on my en.wiki user page. I review and tag newly uploaded images for copyright violations – please don't take it personally, copyright rules are difficult and often annoying; they differ across various wikis and other websites, but we must follow them. I used to be fluent in Dutch and could speak some French and Spanish, meaning I can still understand a bit of these and a few other European languages, but I will probably reply in English.

• Copyright tags
• Currency
• CommonsDelinker log
• Flickr upload script
• Flinfo - extracts metadata from flickr/paniramio/picasa/etc images
• Hirtle chart (US copyright), URAA
• Move from wiki to Commons
• Stamps
• Threshold of originality
• Validator (SVG images)
• Manual cleanup of SVG code

• Africa photos {{PD-USGov-USAID}}
• ANEFO (sub-collection of Dutch archives) {{Cc-by-sa-3.0-nl}}
• Bundesarchiv {{Cc-by-sa-3.0-de}}
• FilmiTadka (license)
• Flickr; Channels: NASA, Smithsonian
• Gallica {{Creator:Agence Rol}} {{Creator:Agence de presse Meurisse}} {{PD-GallicaScan|IFN-90477371}}
• Geograph Britain and Ireland {{Geograph}}
• Geograph Channel Islands
• Geograph Deutschland
• Getty images Mondadori {{PD-Italy}} Asahi {{PD-Japan}}
• Ipernity
• kremlin.ru {{Kremlin.ru}}
• Library of Congress {{LOC-image}} {{PD-Van Vechten}}
• MFO (mathematicians)
• mpdi.org open access journals
• NASA {{PD-USGov-NASA}}
• National Institute of Health {{PD-USGov-NIH}} http://ihm.nlm.nih.gov/images/B014364
• Panoramio
• Picasa
• PLos journals
• Smithsonian collections
• Stora Grabbarna (Swedish track athletes) {{PD-Sweden-photo}}
• Time Magazine (before 6 July 1936) {{PD-US-not renewed-TIME}}
• Wellcome Images {{Cc-by-4.0}} http://wellcomeimages.org/indexplus/image/V0002373.html
• USGS {{PD-USGov-USGS}}

• Glasgow University
• NYU Medical Center
• Onlipix

• International: http://www.wnsstamps.post/en/ https://colnect.com/en/
• Abkhazia {{PD-AB-exempt}}
• Albania {{PD-Albania-exempt}}
• Armenia {{PD-AM-exempt}} [1]
• Artsakh {{PD-AR-exempt}} [2]
• Azerbaijan {{PD-AZ-exempt}} [3]
• Belarus {{PD-BY-exempt}} [4]
• Georgia {{PD-GE-exempt}} [5]
• India {{GODL-India}} [6]
• Indonesia {{PD-IDGov}}
• Kazakhstan {{PD-KZ-exempt}} [7] [8]
• Kyrgyzstan {{PD-KG-exempt}} [9]
• Latvia {{PD-LV-exempt}} [10]
• Lithuania {{PD-LT-exempt}}
• Moldova {{PD-MD-exempt}} [11]
• Montenegro {{PD-MNEGov}}
• Philippines {{PD-PhilippinesGov}} [12] [13]
• Romania {{PD-RO-exempt}} [14] [15] [16]
• Russia {{PD-RU-exempt}}
• Serbia {{PD-SerbiaGov}} [17]
• Tajikistan {{PD-TJ-exempt}}
• Transnistria {{PD-PMR-exempt}}
• Turkmenistan {{PD-TK-exempt}}
• Ukraine {{PD-UA-exempt}}

• File renaming
• Flickr review {{Flickrreview|Materialscientist|2026-04-5}}{{subst:npd|2026-04-5}}
• Panoramio review {{Panoramioreview|Materialscientist|2026-04-5}}
• Picasa reviews {{Picasareview|Materialscientist|2026-04-5}}
• Images with regular noise
• Images with watermarks

• FFT [18] [19]
• Resynthesizer [20]
• Wavelets decompose [21]

Category:Photographs by User:Materialscientist

• 👁 Daniele Hypólito, Brazilian gymnast
  
  Daniele Hypólito, Brazilian gymnast
• 👁 Felipe Gomes, Brazilian Paralympic sprinter
  
  Felipe Gomes, Brazilian Paralympic sprinter
• 👁 Ethel Catherwood, Canadian athlete
  
  Ethel Catherwood, Canadian athlete
• 👁 John D. White, American politician
  
  John D. White, American politician
• 👁 Elizabeth Garrett Anderson, English physician and suffragist
  
  Elizabeth Garrett Anderson, English physician and suffragist
• 👁 Arthur Schopenhauer, German philosopher
  
  Arthur Schopenhauer, German philosopher
• 👁 G. D. Bakshi, Indian Army officer
  
  G. D. Bakshi, Indian Army officer
• 👁 Satyendra Bose, Indian physicist
  
  Satyendra Bose, Indian physicist
• 👁 Lalon, Bengali spiritual leader
  
  Lalon, Bengali spiritual leader