Use RESTfull webservice from ocrwebservice.com to get a document scanned and converted into text

ocrv1

public class ocrv1 {
    //read file contents, sent to http://www.ocrwebservice.com/api/restguide and get ocr response
    
    public static void func1() {
        StaticResource sr = [SELECT Id, name, Body FROM StaticResource where name = 'Simple_Survey_Intro' LIMIT 1];
        String b64String = EncodingUtil.base64Encode(sr.Body);
		String hexString = EncodingUtil.convertToHex(sr.Body);
		system.debug('\n b64= '+b64String +'\n hex= '+hexString);
        
        Http http = new Http();
        HttpRequest  request = new HttpRequest();
        request.setMethod('POST');
        request.setEndpoint('http://www.ocrwebservice.com/restservices/processDocument?language=english&pagerange=1-5&gettext=true&outputformat=doc');
        request.setHeader('Authorization', 'Basic TUFOTkhBUkxFRU46OUVFRkMwRjEtREQ1RC00QUYxLUFGMzMtRDQ4MzhGQUU4MERE');
        request.setBody(b64String);
        HttpResponse response = http.send(request);
        system.debug('\n Response = ' + response.getBody());
    }

}