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- Bit Depth the tonal or signal resolution; determines maximum number of shades of gray or colors in a digital file.
- Color Mode refers to whether the image is black and white, grayscale, or color. Grayscale images consist of a single channel and can be 8-bit (256 levels) or 16-bit (65,536 levels). Color images consist of 3 or more grayscale channels that represent color and brightness information and each channel may be either 8-bits or 16-bits. Common color modes are RGB, CMYK, and LAB color.
- Compression a process that eliminates redundant data to create a smaller file size.
- Dimensions the size or measurement of an image’s height and length, recorded in inches or centimeters.
- File Format a structure for encoding the information in a data file.
- Pixel Array a measurement of the spatial resolution or the amount of information in an image file expressed as the number of pixels on each dimension of the image.
- Resolution a measurement of the spatial resolution, written as pixels per inch or “ppi”. The term “dpi” refers to printer resolution or dots per inch and is often used interchangeably for ppi.
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