Documentation Help Center

Large Image Files

Read and navigate very large images

A very large image may not fit into memory, which makes it challenging to display and process the image. The bigimage object solves this problem by representing an image as smaller blocks of data that can be independently loaded and processed. A bigimage can support large images with one or multiple resolution levels.

Functions

`bigimage`	Out-of-core processing of very large images
`bigimageDatastore`	Datastore to manage blocks of big image data
`blockLocationSet`	List of block locations in big images
`selectBlockLocations`	Select blocks from big images
`apply`	Process blocks of big image
`getBlock`	Read block of big image
`getFullLevel`	Get all data in one level of big image
`getRegion`	Read arbitrary region of big image
`setBlock`	Put data in specific block of big image
`countEachLabel`	Count number of pixel labels for each class of `bigimageDatastore`
`bigimageshow`	Display `bigimage` object
`showmask`	Show mask overlay on `bigimageshow`

Featured Examples

Set Spatial Referencing for Big Images

Set Spatial Referencing for Big Images

Set and verify the spatial referencing information of a bigimage object.

Process Big Images Efficiently Using Partial Images or Lower Resolutions

Process Big Images Efficiently Using Partial Images or Lower Resolutions

Process a big image quickly using two strategies that enable computations on smaller representative samples of the high-resolution image.

Process Big Images Efficiently Using Mask

Process Big Images Efficiently Using Mask

Process a big image efficiently by using a mask to isolate ROIs.

Open Live Script

Explore Big Image Details with Interactive ROIs

Explore Big Image Details with Interactive ROIs

Display a detailed region of a big image selected interactively using ROI tools.

Warp Big Image

Warp Big Image

Apply a geometric transformation (warping) to a big image.

Open Live Script

Create Labeled bigimage from ROIs and Masks

Create Labeled bigimage from ROIs and Masks

Create a labeled bigimage consisting of categorical labels.

Open Live Script

Deep Learning Classification of Large Multiresolution Images

Deep Learning Classification of Large Multiresolution Images

Train an Inception-v3 deep neural network to classify multiresolution whole slide images (WSIs) that do not fit in memory.

Open Live Script

Image Processing Toolbox Documentation

Support

Introducing Deep Learning with MATLAB

Introducing Deep Learning with MATLAB