Difference between revisions of "Significant characteristics of raster images"
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| − | | | + | |"SamplesPerPixel is usually 1 for bilevel, grayscale, and palette-color images. SamplesPerPixel is usually 3 for RGB images. If this value is higher, ExtraSamples should give an indication of the meaning of the additional channels." http://www.awaresystems.be/imaging/tiff/tifftags/samplesperpixel.html |
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Revision as of 11:24, 17 March 2010
Main Page > Documentation > Media type preservation plans > Significant properties > Significant properties of raster images
This table lists properties and components taken from Florida Digital Archive Action plan, TIFF 6.0 (http://www.fcla.edu/digitalArchive/formatInfo.htm), with additional notes:
| property value | component | notes |
|---|---|---|
| image width | content | measured in number of pixels |
| image height | content | measured in number of pixels |
| sequence of images | structure | If a TIFF file contains multiple images, the sequence of the images in the TIFF file will be preserved (Florida Digital Archive Action plan, TIFF 6.0) |
| X sampling frequency | appearance | may be expressed as X resolution |
| Y sampling frequency | appearance | may be expressed as Y resolution |
| samples per pixel | appearance | |
| bits per sample | appearance | |
| extra samples | appearance | "SamplesPerPixel is usually 1 for bilevel, grayscale, and palette-color images. SamplesPerPixel is usually 3 for RGB images. If this value is higher, ExtraSamples should give an indication of the meaning of the additional channels." http://www.awaresystems.be/imaging/tiff/tifftags/samplesperpixel.html |