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  2. Optical character recognition - Wikipedia

    en.wikipedia.org/wiki/Optical_character_recognition

    Video of the process of scanning and real-time optical character recognition (OCR) with a portable scanner. Optical character recognition or optical character reader (OCR) is the electronic or mechanical conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene photo (for example the text on signs and ...

  3. Virtual reality - Wikipedia

    en.wikipedia.org/wiki/Virtual_reality

    An operator controlling The Virtual Interface Environment Workstation (VIEW) [1] at NASA Ames around 1990 Virtual reality (VR) is a simulated experience that employs 3D near-eye displays and pose tracking to give the user an immersive feel of a virtual world.

  4. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    Text in PDF is represented by text elements in page content streams. A text element specifies that characters should be drawn at certain positions. The characters are specified using the encoding of a selected font resource. A font object in PDF is a description of a digital typeface.

  5. Media control symbols - Wikipedia

    en.wikipedia.org/wiki/Media_control_symbols

    Media controls on a multimedia keyboard. From top; left to right: skip backward, skip forward, stop, play/pause. Media control symbols are commonly found on both software and physical media players, remote controls, and multimedia keyboards.

  6. Rendering (computer graphics) - Wikipedia

    en.wikipedia.org/wiki/Rendering_(computer_graphics)

    Meaning: at a particular position and direction, the outgoing light (L o) is the sum of the emitted light (L e) and the reflected light. The reflected light being the sum of the incoming light (L i) from all directions, multiplied by the surface reflection and incoming angle. By connecting outward light to inward light, via an interaction point ...

  7. Lossless compression - Wikipedia

    en.wikipedia.org/wiki/Lossless_compression

    Most lossless compression programs do two things in sequence: the first step generates a statistical model for the input data, and the second step uses this model to map input data to bit sequences in such a way that "probable" (i.e. frequently encountered) data will produce shorter output than "improbable" data.

  8. Graphics - Wikipedia

    en.wikipedia.org/wiki/Graphics

    Graphics (from Ancient Greek γραφικός (graphikós) 'pertaining to drawing, painting, writing, etc.') are visual images or designs on some surface, such as a wall, canvas, screen, paper, or stone, to inform, illustrate, or entertain.

  9. Plain text - Wikipedia

    en.wikipedia.org/wiki/Plain_text

    Text file with portion of The Human Side of Animals by Royal Dixon, displayed by the command cat in an xterm window. In computing, plain text is a loose term for data (e.g. file contents) that represent only characters of readable material but not its graphical representation nor other objects (floating-point numbers, images, etc.).