How to use OCR (Optical character recognition) for recognizing characters and words in an image in MATLAB App R2023a?

This video shows the steps to implement OCR (Optical character recognition) for recognizing characters and words in an image in MATLAB App. This App is developed using MATLAB App Designer R2023a.

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Complete source code and other details:

Main method:

    methods (Access = private)

        % Button pushed function: OCRReadtextfromImageButton
        function OCRReadtextfromImageButtonPushed(app, event)
            i = imread(app.Image.ImageSource);
            ocr_result = ocr(i);
            app.ImageTextTextArea.Value = ocr_result.Text;

        end
    end

Complete Class:

classdef OCR_App < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure                    matlab.ui.Figure
        OCRReadtextfromImageButton  matlab.ui.control.Button
        ImageTextTextArea           matlab.ui.control.TextArea
        ImageTextTextAreaLabel      matlab.ui.control.Label
        Image                       matlab.ui.control.Image
    end

    % Callbacks that handle component events
    methods (Access = private)

        % Button pushed function: OCRReadtextfromImageButton
        function OCRReadtextfromImageButtonPushed(app, event)
            i = imread(app.Image.ImageSource);
            ocr_result = ocr(i);
            app.ImageTextTextArea.Value = ocr_result.Text;

        end
    end

    % Component initialization
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Get the file path for locating images
            pathToMLAPP = fileparts(mfilename('fullpath'));

            % Create UIFigure and hide until all components are created
            app.UIFigure = uifigure('Visible', 'off');
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'MATLAB App';

            % Create Image
            app.Image = uiimage(app.UIFigure);
            app.Image.Position = [1 136 325 318];
            app.Image.ImageSource = fullfile(pathToMLAPP, 'image1.png');

            % Create ImageTextTextAreaLabel
            app.ImageTextTextAreaLabel = uilabel(app.UIFigure);
            app.ImageTextTextAreaLabel.HorizontalAlignment = 'right';
            app.ImageTextTextAreaLabel.Position = [333 417 63 22];
            app.ImageTextTextAreaLabel.Text = 'Image Text';

            % Create ImageTextTextArea
            app.ImageTextTextArea = uitextarea(app.UIFigure);
            app.ImageTextTextArea.Position = [411 167 230 274];

            % Create OCRReadtextfromImageButton
            app.OCRReadtextfromImageButton = uibutton(app.UIFigure, 'push');
            app.OCRReadtextfromImageButton.ButtonPushedFcn = createCallbackFcn(app, @OCRReadtextfromImageButtonPushed, true);
            app.OCRReadtextfromImageButton.Position = [200 63 168 23];
            app.OCRReadtextfromImageButton.Text = 'OCR - Read text from Image';

            % Show the figure after all components are created
            app.UIFigure.Visible = 'on';
        end
    end

    % App creation and deletion
    methods (Access = public)

        % Construct app
        function app = OCR_App

            % Create UIFigure and components
            createComponents(app)

            % Register the app with App Designer
            registerApp(app, app.UIFigure)

            if nargout == 0
                clear app
            end
        end

        % Code that executes before app deletion
        function delete(app)

            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end

Screenshots:

Sample Image

Respective Text from OCR:

It was the best of
times, it was the worst
of times, it was the age
of wisdom, it was the
age of foolishness…

Excerpt:

The provided content pertains to a video tutorial explaining how to implement Optical Character Recognition (OCR) in an image using MATLAB App Designer R2023a. The video provides step-by-step instructions for creating an app capable of reading and decoding the text contained in an image. Key sections of the source code pertaining to the OCR function and the user interface are also presented. The tutorial encourages user interaction and assistance via a provided contact email address and website. Practical demonstration is given by running the OCR app to extract text from a sample image.