getImage

Read images stored in MATLAB interface object for OpenCV class

Since R2021b

Syntax

outputImg = getImage(ocvInput)

Description

outputImg = getImage(ocvInput) reads the image stored in a MATLAB^® interface object for an OpenCV class and writes it to the specified output variable outputImg in the MATLAB workspace.

Examples

Read Image Stored in OpenCV Mat Class

Add the MATLAB interface to OpenCV package names to the import list.

import clib.opencv.*
import vision.opencv.util.*

Read an image into the MATLAB workspace.

img = imread("cameraman.tif");

Create a MATLAB interface object for the OpenCV InputOutput array class.

[ocvMat,ocvArray] = createMat(img);

Read the image stored in the InputOutput interface object.

output = getImage(ocvArray);

Display the output image.

figure
imshow(output)

Input Arguments

ocvInput — MATLAB interface object for OpenCV class

MatND interface object | UMat interface object | InputArray interface object | InputOutputArray interface object | OutputArray interface object

MATLAB interface object for an OpenCV class, specified as one of these values:

• MatND interface object — Created by using the createMat function and represents the OpenCV cv::Mat class.

• UMat interface object — Created by using the createUMat function and represents the OpenCV cv::UMat class.

• InputArray interface object — Created by using the createMat or createUMat function and represents the OpenCV cv::_InputArray class. The InputArray interface object passes array inputs to the OpenCV functions.

• InputOutputArray interface object — Created by using the createMat or createUMat function and represents the OpenCV cv::_InputOutputArray class. The InputOutputArray interface object passes array inputs to the OpenCV functions and writes the array outputs returned by the OpenCV functions.

• OutputArray interface object — Created by using the createMat or createUMat function and represents the OpenCV cv::_OutputArray class. The OutputArray interface object contains the array outputs returned by the OpenCV functions.

Output Arguments

outputImg — Output image

M-by-N matrix | M-by-N-by-3 array

Output image read from a MATLAB interface object, returned as an M-by-N matrix for intensity images and M-by-N-by-3 array for color images.

Version History

Introduced in R2021b