Learn more about Image Processing Toolbox

Getting Information About a Graphics File

To obtain information about a graphics file and its contents, use the imfinfo function. You can use imfinfo with any of the formats supported by MATLAB. Use the imformats function to determine which formats are supported.

Note   You can also get information about an image displayed in the Image Tool — see Getting Information About an Image Using the Image Information Tool.

The information returned by imfinfo depends on the file format, but it always includes at least the following:

• Name of the file

• File format

• Version number of the file format

• File modification date

• File size in bytes

• Image width in pixels

• Image height in pixels

• Number of bits per pixel

• Image type: truecolor (RGB), grayscale (intensity), or indexed

Reading and Writing Image Data

Reading Image Data

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