page_title: Glossary of machine vision
section_title: X
hierarchical_section_title: Glossary of machine vision / X
caption_attribution_description: English: An early X-ray picture (radiograph) taken at a public lecture by Wilhelm Röntgen (1845–1923) of Albert von Kölliker's left hand. See Axel Haase; Gottfried Landwehr; Eberhard Umbach (eds.) (1997) Röntgen Centennial: X-rays in Natural and Life Sciences, Singapore&#58; &#32;World Scientific, pp.&#160;7–8 ISBN&#58; 981-02-3085-0.&#32;
context_page_description: The following are common definitions related to the machine vision field.
  General related fields
  Machine vision
  Computer vision
  Image processing
  Signal processing
context_section_description: X-rays. A form of electromagnetic radiation with a wavelength in the range of 10 to 0.01 nanometers, corresponding to frequencies in the range 30 to 3000 PHz (10¹⁵ hertz). X-rays are primarily used for diagnostic medical and industrial imaging as well as crystallography. X-rays are a form of ionizing radiation and as such can be dangerous.
caption: An X-ray picture (radiograph), taken by Wilhelm Röntgen, of his wife's hand.
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