Learning Characters

Functional Guide | Reference: NewFont, SetTextColor, SetMinCharWidth, SetMaxCharWidth, SetMinCharHeight, SetMaxCharHeight, SetNoiseArea, LearnPatterns, BuildObjects, FindAllChars, Save

//////////////////////////////////////////////////////
// This code snippet shows how to learn characters  //
// based on an image featuring a known text and     //
// save the corresponding font file.                //
//////////////////////////////////////////////////////

// Image constructor
EImageBW8 srcImage;

// EOCR constructor
EOCR ocr;

// Text to be learned (all digits)
// Assuming the image contains this text
const std::string text= "0123456789";

// ...

// Create a new fon
ocr.NewFont(8, 11);

// Adjust the segmentation parameters
ocr.SetTextColor(EOCRColor_BlackOnWhite);
ocr.SetMinCharWidth(15);
ocr.SetMinCharWidth(50);
ocr.SetMinCharHeight(15);
ocr.SetMinCharHeight(75);
ocr.SetNoiseArea(15);

// Segment the characters
ocr.BuildObjects(&srcImage);
ocr.FindAllChars(&srcImage);

// Learn the characters
ocr.LearnPatterns(&srcImage, text, EOCRClass_Digit);

// Save the font into a file
ocr.Save("myFont.ocr");

'//////////////////////////////////////////////////////
'// This code snippet shows how to learn characters  //
'// based on an image featuring a known text and     //
'// save the corresponding font file.                //
'//////////////////////////////////////////////////////

' Image constructor
Dim srcImage As New EImageBW8

' EOCR constructor
Dim ocr As New EOCR

' Text to be learned (all digits)
' Assuming the image contains this text
Dim text As String
text = "0123456789"

' ...

' Create a new font
ocr.NewFont 8, 11

' Adjust the segmentation parameters
ocr.TextColor = EOCRColor_BlackOnWhite
ocr.MinCharWidth = 15
ocr.MaxCharWidth = 50
ocr.MinCharHeight = 15
ocr.MaxCharHeight = 75
ocr.NoiseArea = 15

' Segment the characters
ocr.BuildObjects srcImage
ocr.FindAllChars srcImage

' Learn the characters
ocr.LearnPatterns srcImage, text, EOCRClass_Digit

' Save the font into a file
ocr.Save "myFont.ocr"

//////////////////////////////////////////////////////
// This code snippet shows how to learn characters  //
// based on an image featuring a known text and     //
// save the corresponding font file.                //
//////////////////////////////////////////////////////

// Image constructor
EImageBW8 srcImage= new EImageBW8();

// EOCR constructor
EOCR ocr= new EOCR();

// Text to be learned (all digits)
// Assuming the image contains this text
string text= "0123456789";

// ...

// Create a new font
ocr.NewFont(8, 11);

// Adjust the segmentation parameters
ocr.TextColor= EOCRColor.BlackOnWhite;
ocr.MinCharWidth= 15;
ocr.MaxCharWidth= 50;
ocr.MinCharHeight= 15;
ocr.MaxCharHeight= 75;
ocr.NoiseArea= 15;

// Segment the characters
ocr.BuildObjects(srcImage);
ocr.FindAllChars(srcImage);

// Learn the characters
ocr.LearnPatterns(srcImage, text, (int)EOCRClass.Digit);

// Save the font into a file
ocr.Save("myFont.ocr");