The C# OCR Library

using IronOcr; using System.Drawing; // For image export // We can delve deep into OCR results as an object model of // Pages, Barcodes, Paragraphs, Lines, Words and Characters // This allows us to explore, export and draw OCR content using other APIs/ var Ocr = new IronTesseract(); Ocr.Configuration.ReadBarCodes = true; using (var Input = new OcrInput(@"example.tiff")) { OcrResult Result = Ocr.Read(Input); foreach (var page in Result.Pages) { // Page object int PageNumber = page.PageNumber; string PageText = page.Text; int PageWordCount = page.WordCount; // null if we dont set Ocr.Configuration.ReadBarCodes = true; OcrResult.Barcode[] Barcodes = page.Barcodes; Bitmap PageImage = page.ToBitmap(Input); int PageWidth = page.Width; int PageHeight = page.Height; double PageRotation = page.Rotation; // angular correction in degrees from OcrInput.Deskew() foreach (var paragraph in page.Paragraphs) { // Pages -> Paragraphs int ParagraphNumber = paragraph.ParagraphNumber; string ParagraphText = paragraph.Text; Bitmap ParagraphImage = paragraph.ToBitmap(Input); int ParagraphX_location = paragraph.X; int ParagraphY_location = paragraph.Y; int ParagraphWidth = paragraph.Width; int ParagraphHeight = paragraph.Height; double ParagraphOcrAccuracy = paragraph.Confidence; OcrResult.TextFlow paragrapthText_direction = paragraph.TextDirection; foreach (var line in paragraph.Lines) { // Pages -> Paragraphs -> Lines int LineNumber = line.LineNumber; string LineText = line.Text; Bitmap LineImage = line.ToBitmap(Input); ; int LineX_location = line.X; int LineY_location = line.Y; int LineWidth = line.Width; int LineHeight = line.Height; double LineOcrAccuracy = line.Confidence; double LineSkew = line.BaselineAngle; double LineOffset = line.BaselineOffset; foreach (var word in line.Words) { // Pages -> Paragraphs -> Lines -> Words int WordNumber = word.WordNumber; string WordText = word.Text; Image WordImage = word.ToBitmap(Input); int WordX_location = word.X; int WordY_location = word.Y; int WordWidth = word.Width; int WordHeight = word.Height; double WordOcrAccuracy = word.Confidence; foreach (var character in word.Characters) { // Pages -> Paragraphs -> Lines -> Words -> Characters int CharacterNumber = character.CharacterNumber; string CharacterText = character.Text; Bitmap CharacterImage = character.ToBitmap(Input); int CharacterX_location = character.X; int CharacterY_location = character.Y; int CharacterWidth = character.Width; int CharacterHeight = character.Height; double CharacterOcrAccuracy = character.Confidence; // Output alternative symbols choices and their probability. // Very useful for spellchecking OcrResult.Choice[] Choices = character.Choices; } } } } } }

Imports IronOcr Imports System.Drawing ' For image export ' We can delve deep into OCR results as an object model of ' Pages, Barcodes, Paragraphs, Lines, Words and Characters ' This allows us to explore, export and draw OCR content using other APIs/ Private Ocr = New IronTesseract() Ocr.Configuration.ReadBarCodes = True Using Input = New OcrInput("example.tiff") Dim Result As OcrResult = Ocr.Read(Input) For Each page In Result.Pages ' Page object Dim PageNumber As Integer = page.PageNumber Dim PageText As String = page.Text Dim PageWordCount As Integer = page.WordCount ' null if we dont set Ocr.Configuration.ReadBarCodes = true; Dim Barcodes() As OcrResult.Barcode = page.Barcodes Dim PageImage As Bitmap = page.ToBitmap(Input) Dim PageWidth As Integer = page.Width Dim PageHeight As Integer = page.Height Dim PageRotation As Double = page.Rotation ' angular correction in degrees from OcrInput.Deskew() For Each paragraph In page.Paragraphs ' Pages -> Paragraphs Dim ParagraphNumber As Integer = paragraph.ParagraphNumber Dim ParagraphText As String = paragraph.Text Dim ParagraphImage As Bitmap = paragraph.ToBitmap(Input) Dim ParagraphX_location As Integer = paragraph.X Dim ParagraphY_location As Integer = paragraph.Y Dim ParagraphWidth As Integer = paragraph.Width Dim ParagraphHeight As Integer = paragraph.Height Dim ParagraphOcrAccuracy As Double = paragraph.Confidence Dim paragrapthText_direction As OcrResult.TextFlow = paragraph.TextDirection For Each line In paragraph.Lines ' Pages -> Paragraphs -> Lines Dim LineNumber As Integer = line.LineNumber Dim LineText As String = line.Text Dim LineImage As Bitmap = line.ToBitmap(Input) Dim LineX_location As Integer = line.X Dim LineY_location As Integer = line.Y Dim LineWidth As Integer = line.Width Dim LineHeight As Integer = line.Height Dim LineOcrAccuracy As Double = line.Confidence Dim LineSkew As Double = line.BaselineAngle Dim LineOffset As Double = line.BaselineOffset For Each word In line.Words ' Pages -> Paragraphs -> Lines -> Words Dim WordNumber As Integer = word.WordNumber Dim WordText As String = word.Text Dim WordImage As Image = word.ToBitmap(Input) Dim WordX_location As Integer = word.X Dim WordY_location As Integer = word.Y Dim WordWidth As Integer = word.Width Dim WordHeight As Integer = word.Height Dim WordOcrAccuracy As Double = word.Confidence For Each character In word.Characters ' Pages -> Paragraphs -> Lines -> Words -> Characters Dim CharacterNumber As Integer = character.CharacterNumber Dim CharacterText As String = character.Text Dim CharacterImage As Bitmap = character.ToBitmap(Input) Dim CharacterX_location As Integer = character.X Dim CharacterY_location As Integer = character.Y Dim CharacterWidth As Integer = character.Width Dim CharacterHeight As Integer = character.Height Dim CharacterOcrAccuracy As Double = character.Confidence ' Output alternative symbols choices and their probability. ' Very useful for spellchecking Dim Choices() As OcrResult.Choice = character.Choices Next character Next word Next line Next paragraph Next page End Using