Read and Write Image Data from Files

Read and write image data from files, get information about contents of image files

Image Processing Toolbox™ enables you to read and write image files in many common file formats including BMP, GIF, JPEG, PNG, and TIFF. The toolbox supports reading and writing medical file formats including DICOM, NifTI, and Analyze 7.5. You can also work with images in specialized file formats, including NITF, DPX, and Interfile.

Apps

DICOM Browser

Explore collection of DICOM files

Functions

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Generic File Import and Export

`imread`	Read image from graphics file
`imwrite`	Write image to graphics file
`imfinfo`	Information about graphics file

Work with DICOM Files

`dicominfo`	Read metadata from DICOM message
`dicomread`	Read DICOM image
`dicomwrite`	Write images as DICOM files
`dicomreadVolume`	Construct 4-D volume from set of DICOM images
`dicomCollection`	Gather details about related series of DICOM files
`dicomContours`	Extract ROI data from DICOM-RT structure set
`dicomanon`	Anonymize DICOM file
`dicomdict`	Get or set active DICOM data dictionary
`dicomdisp`	Display DICOM file structure
`dicomlookup`	Find attribute in DICOM data dictionary
`dicomuid`	Generate DICOM globally unique identifier
`images.dicom.decodeUID`	Get information about DICOM unique identifier
`images.dicom.parseDICOMDIR`	Extract metadata from DICOMDIR file

Work with Specialized File Formats

`niftiinfo`	Read metadata from NIfTI file
`niftiwrite`	Write volume to file using NIfTI format
`niftiread`	Read NIfTI image
`analyze75info`	Read metadata from header file of Analyze 7.5 data set
`analyze75read`	Read image data from image file of Analyze 7.5 data set
`interfileinfo`	Read metadata from Interfile file
`interfileread`	Read images in Interfile format
`nitfinfo`	Read metadata from National Imagery Transmission Format (NITF) file
`nitfread`	Read image from NITF file
`isnitf`	Check if file is National Imagery Transmission Format (NITF) file
`dpxinfo`	Read metadata from DPX file
`dpxread`	Read DPX image

Topics

Read and Write Standard Graphics Files

Image Types in the Toolbox

Image types determine how MATLAB^® interprets data matrix elements as pixel intensity values. The toolbox supports many image types including binary, grayscale, truecolor, multispectral, and label images.

Get Information About Graphics Files

You can read the metadata contained in graphics files of supported formats. Some metadata is present in all files, and other metadata depends on the file format.

Work with DICOM and Other Medical Files

DICOM Support in Image Processing Toolbox

The Digital Imaging and Communications in Medicine (DICOM) Standard facilitates access to image data and files across medical imaging equipment.

Create New DICOM Series

When writing a modified image to a DICOM file, you can make the modified image the start of a new series.

Explicit Versus Implicit VR Attributes

DICOM infers a two-letter value representation (VR) of an attribute unless a VR is specified.

Mayo Analyze 7.5 Files

Analyze 7.5 is a file format, developed by the Mayo Clinic, for storing MRI data.

Interfile Files

Interfile is a file format that was developed for the exchange of nuclear medicine image data.