getImage

Read images stored in MATLAB interface object for OpenCV class

Since R2021b

collapse all in page

    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.

    example

    Examples

    collapse all

    This example uses:

    Open Live Script

    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)

    Figure contains an axes object. The hidden axes object contains an object of type image.

    Input Arguments

    collapse all

    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

    collapse all

    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

    See Also

    |

    Topics