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First, a tonal scale is printed out on the transparency film and this is used to create a print using whatever process is being tested. Next, the print is scanned and the resulting tones are examined either visually or using a specialized computer program, and a new contrast curve is generated to compensate for any perceived inadequacies.
For book scanning on a low budget, the least expensive way to scan a book or magazine is to cut off the binding. This converts the book or magazine into a sheaf of separate sheets which can be loaded into a standard automatic document feeder (ADF) and scanned using inexpensive and common scanning technology. The method is not suitable for rare ...
first 3 parameters: color to lighten as R, G, B color values, each numeric and in range 0..255 fourth parameter: amount by which to lighten in % (0 = no change, 100 = white) optional format parameter: name of a template to format the RGB values (the default is {{ Hex3 }} an alternative is {{ RGB }} )
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Alexander Murray and Richard Morse invented and patented the first analog color scanner at Eastman Kodak in 1937. Intended for color separation at printing presses, their machine was an analog drum scanner that imaged a color transparency mounted in the drum, with a light source placed underneath the film, and three photocells with red, green, and blue color filters reading each spot on the ...
The scanned footage is edited and composited on work stations then mastered back on film, see film-out and digital intermediate. Scanned film frames may also be used in digital film restoration. The film may also be projected directly on a digital projector in the theaters. The data film files may be converted to SDTV (NTSC or PAL) video TV ...
PDF is a standard for encoding documents in an "as printed" form that is portable between systems. However, the suitability of a PDF file for archival preservation depends on options chosen when the PDF is created: most notably, whether to embed the necessary fonts for rendering the document; whether to use encryption; and whether to preserve additional information from the original document ...
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 ...