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  2. Snellen chart - Wikipedia

    en.wikipedia.org/wiki/Snellen_chart

    Snellen chart is used to estimate visual acuity (last three rows are 20/15, 20/13 and 20/10) A Snellen chart is an eye chart that can be used to measure visual acuity . Snellen charts are named after the Dutch ophthalmologist Herman Snellen who developed the chart in 1862 as a measurement tool for the acuity formula developed by his professor ...

  3. Visual acuity - Wikipedia

    en.wikipedia.org/wiki/Visual_acuity

    For 6/6 = 1.0 acuity, the size of a letter on the Snellen chart or Landolt C chart is a visual angle of 5 arc minutes (1 arc min = 1/60 of a degree), which is a 43 point font at 20 feet. [10] By the design of a typical optotype (like a Snellen E or a Landolt C), the critical gap that needs to be resolved is 1/5 this value, i.e., 1 arc min.

  4. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    Before PDF version 1.5, the table would always be in a special ASCII format, be marked with the xref keyword, and follow the main body composed of indirect objects. Version 1.5 introduced optional cross-reference streams, which have the form of a standard stream object, possibly with filters applied. Such a stream may be used instead of the ...

  5. Vision transformer - Wikipedia

    en.wikipedia.org/wiki/Vision_transformer

    A vision transformer (ViT) is a transformer designed for computer vision. [1] A ViT decomposes an input image into a series of patches (rather than text into tokens ), serializes each patch into a vector, and maps it to a smaller dimension with a single matrix multiplication .

  6. History of PDF - Wikipedia

    en.wikipedia.org/wiki/History_of_PDF

    PDF/A (since 2005 - series of ISO 19005 standards) - a.k.a. "PDF for Archive" - Document management - Electronic document file format for long-term preservation (working in ISO Technical committee 171), based on PDF 1.4 and later also ISO 32000-1 - PDF 1.7; PDF/E (since 2008 - ISO 24517) - a.k.a. "PDF for Engineering" - Document management ...

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  8. Adobe Acrobat version history - Wikipedia

    en.wikipedia.org/wiki/Adobe_Acrobat_version_history

    Originally called Adobe Reader For Windows Tablets (Version 1.0) was released on the Microsoft Windows Store on the second week of December 2012, [38] based on the Adobe Reader Mobile engine found in the iOS, Android, Blackberry and Windows phone versions, is the first application written by Adobe Systems for the Windows 8/RT Metro Style interface.

  9. Forge (character) - Wikipedia

    en.wikipedia.org/wiki/Forge_(character)

    The Ultimate Marvel version of Forge has been dramatically re-imagined. He became a member of the Brotherhood of Mutants and follows Magneto with the promise of getting to strike back at humans. [74] This version of Forge is also now of Asian Indian descent, a play upon the mainstream version of the character's American Indian heritage.