IPictureObject

foreach( IDocument doc in MainWindow.Selection.Documents ) 
                { 
                MainWindow.TaskWindow.OpenDocument( doc );
                foreach( IPage page in doc.Pages ) 
                { 
                IPictureObject picture = page.Picture;
                        double score = (double)picture.CalcSuitabilityForOCR();
                        bool verdict = (bool)picture.IsSuitableForOcr();
                        page.Comment = score.ToString( "0.0000" ) + " / " + verdict.ToString();
                } 
                }