randomCropWindow3d

Create randomized cuboidal cropping window

Since R2019b

Syntax

win = randomCropWindow3d(inputSize,targetSize)

Description

win = randomCropWindow3d(inputSize,targetSize) determines the window to crop from a 3-D input image of size inputSize such that the size of the cropped image is targetSize. The coordinates of the window are selected from a random position in the input image.

Examples

Randomly Crop 3-D Image Volume To Target Size

Read a 3-D MRI volume. Use the squeeze function to remove any singleton dimensions.

load mri;
D = squeeze(D);

Display the volume.

volshow(D);

Specify the target size of the cropping window.

targetSize = [64 64 10];

Create a random crop window that crops the input volume from a randomly-selected position.

win = randomCropWindow3d(size(D),targetSize);

Crop the volume using the random crop window.

Dcrop = imcrop3(D,win);

Display the cropped volume.

volshow(Dcrop);

Input Arguments

inputSize — Input image size

3-element vector of positive integers | 4-element vector of positive integers

Input image size, specified as one of the following.

Type of Input Image	Format of inputSize
3-D grayscale or binary image	3-element vector of positive integers of the form [height width depth]
3-D RGB or multispectral image	4-element vector of positive integers of the form [height width depth channels]

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64

targetSize — Target image size

3-element vector of positive integers | 4-element vector of positive integers

Target image size, specified as one of the following.

Type of Target Image	Format of targetSize
3-D grayscale or binary image	3-element vector of positive integers of the form [height width depth]
3-D RGB or multispectral image	4-element vector of positive integers of the form [height width depth channels]

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64

Output Arguments

win — Cropping window

Cuboid object

Cropping window, returned as a Cuboid object.

Version History

Introduced in R2019b