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Encyclopedia > PhotoCD

Photo Compact Disc (PCD) logo/trademark
Photo Compact Disc (PCD) logo/trademark
This image is a candidate for speedy deletion. It will be deleted after Thursday, 8 November 2007.

This image is a candidate for speedy deletion. It will be deleted after Thursday, 8 November 2007.

Photo CD is a system designed by Kodak for digitizing and storing photos in a CD. Launched in 1992, the discs were designed to hold nearly 100 high quality images, scanned prints and slides using special proprietary encoding. Photo CD discs are defined in the Beige Book and conform to the CD-ROM XA and CD-i Bridge specifications as well. They are intended to play on CD-i players, Photo CD players and any computer with the suitable software irrespective of the operating system. The images can also be printed out on photographic paper with a special Kodak machine. Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Eastman Kodak Company (NYSE: EK) is a large multinational public company producing photographic equipment. ... Year 1992 (MCMXCII) was a leap year starting on Wednesday (link will display full 1992 Gregorian calendar). ... The Rainbow Books are a collection of standards defining the allowed formats of Compact Discs. ... The CD-ROM (an abbreviation for Compact Disc Read-Only Memory (ROM)) is a non-volatile optical data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive. ... An operating system (OS) is the software that manages the sharing of the resources of a computer and provides programmers with an interface used to access those resources. ...


The system failed to gain mass usage among consumers partly due to its proprietary nature, the rapid decline in the costs of scanners, and the lack of CD-ROM drives in most home Personal Computers of the day. The Photo CD system gained a fair level of acceptance among professional photographers due to the low cost of the high quality film scans. Prior to Photo CD, professionals who wished to digitize their film images were forced to pay much higher fees to obtain drum scans of their film negatives and transparencies. Photo CD is still used by a niche clientele, but it has been replaced by Picture CD, also from Kodak. True PhotoCD discs are still available from a vendor referenced on Kodak's PhotoCD webpage, but the name is also (incorrectly) used by several vendors for discs which do not meet the PhotoCD standards. In computing, a scanner is a device that analyzes images, printed text, or handwriting, or an object (such as an ornament) and converts it to a digital image. ... The CD-ROM (an abbreviation for Compact Disc Read-Only Memory (ROM)) is a non-volatile optical data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive. ... CanoScan9950F Desktop scanner, with the lid raised. ... Color, positive picture (A) and negative (B), monochrome positive picture (C) and negative (D) In photography, a negative is a rectangle of material (nowadays usually photographic film) coated with chemicals that, upon photographic exposure, cause the material to record the colors or monochromatic shades of the scene in inverse, negative... A single slide, showing a color transparency in a plastic frame In photography, a transparency is a still, positive image created on a transparent base using photochemical means. ... Picture CD is a product by Kodak, following on from the earlier Photo CD product. ...

Designation Resolution Size Intended typical use
(px × px) (Mpx) (MiB)
Base/16 128 × 192 0.025 0.07 Preview (index print, thumbnail)
Base/4 256 × 384 0.098 0.28 Web
Base 512 × 768 0.393 1.13 Computer screen, TV, Web
4 Base 1024 × 1536 1.573 4.50 HDTV screen
16 Base 2048 × 3072 6.291 18.00 Print-out up to ca. 20 x 30 cm
64 Base 4096 × 6144 25.166 72.00 Professional print, pre-press, archiving (optional)

This example shows an image with a portion greatly enlarged, in which the individual pixels are rendered as little squares and can easily be seen. ... A pixel (a contraction of picture element) is one of the many tiny dots that make up the representation of a picture in a computers memory. ... MiB redirects here. ... Super Video Graphics Array, almost always abbreviated to Super VGA or just SVGA is a broad term that covers a wide range of computer display standards. ...

External links


  Results from FactBites:
 
./_Man_Openwin_html/html3/PhotoCD.3.html (864 words)
Kodak PhotoCD allows digital data generated by scanning 35-mm film to be encoded and stored on a compact disc.
To display or further process the images, you normally convert the images to an RGB color space, such as "rgb709," by calling xil_color_convert.3 or xil_color_correct.3 Grayscale or "Black and White" versions of the images may be obtained by converting to "y709" or "ylinear."
Because PhotoCD is a read-only device, the device image created by this device handler is read-only (see xil_is_readable.3 and xil_is_writable.3 Trying to use the device image as a destination will generate an error.
  More results at FactBites »

 

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