Thanks for downloading Dynamsoft Label Recognizer Package!

Your download will start shortly. If your download does not begin, click here to retry.

TextArea Object

Parameter Name	Description
`TextArea.Name`	The name of the TextArea object.
`TextArea.FirstPoint`	The first point of the text area, which is usually the top-left corner.
`TextArea.SecondPoint`	The second point of the text area, which is usually the top-right corner.
`TextArea.ThirdPoint`	The third point of the text area, which is usually the bottom-right corner.
`TextArea.FourthPoint`	The fourth point of the text area, which is usually the bottom-left corner.
`TextArea.CharacterModelName`	Sets the name of a white list of recognizable characters.
`TextArea.GrayscaleTransformationModes`	Sets the mode and priority for the grayscale image conversion.
`TextArea.LetterHeightRange`	Sets the range of letter height (in pixel or a percentage value relative to the height of the text area).
`TextArea.LineSpecificationNameArray`	Specifies the name array of the LineSpecification objects which is relative to current TextArea.
`TextArea.LineStringLengthRange`	Sets the range of string length for each recognized line.
`TextArea.LineStringRegExPattern`	Specifies the regular expression pattern of each line string text in current text area to recognize.
`TextArea.MaxLineCharacterSpacing`	Sets the maximum spacing between characters treated as one line.
`TextArea.TextStringLengthRange`	Sets the range of string length for each recognized text area.
`TextArea.TextRegExPattern`	Specifies the regular expression pattern of the text to recognize.
`TextArea.DictionaryPath`	Sets the path of the dictionary file.
`TextArea.DictionaryCorrectionThresholds`	Sets the threshold of dictionary error correction.
`TextArea.BinarizationModes`	Sets the mode and priority for binarization.
`TextArea.ColourConversionModes`	Sets the mode and priority for converting a colour image to a grayscale image.
`TextArea.GrayscaleEnhancementModes`	Sets the mode and priority for grayscale image preprocessing algorithms.
`TextArea.TextureDetectionModes`	Sets the mode and priority for texture detection.
`TextArea.CharacterNormalizationModes`	Sets the mode and priority for texture detection.

Name

The name of the TextArea object.

Remarks
It must be a unique name.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	Name	string	It must be a mandatory setting value.

Json Parameter Example

{
    "Name":"TextArea1"
}

FirstPoint

The first point of the text area, which is usually the top-left corner.

Remarks
View the texts in 0 degree, the first point is the top-left point of the area defined by TextArea, and the other three points are in a clockwise direction.
The ordinate origin is the top-left corner of the ReferenceRegion.
The value of x is a percentage value relative to the width of the ReferenceRegion.
The value of y is a percentage value relative to the height of the ReferenceRegion.
The allowed values for x/y: [-10000, 10000]

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	FirstPoint	int array	[0, 0]

Json Parameter Example

{
    "FirstPoint":[0, 10]
}

SecondPoint

The second point of the text area, which is usually the top-right corner.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	SecondPoint	int array	[100, 0]

Json Parameter Example

{
    "SecondPoint":[10, 10]
}

ThirdPoint

The third point of the text area, which is usually the bottom-right corner.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	ThirdPoint	int array	[100, 100]

Json Parameter Example

{
    "ThirdPoint":[0, 10]
}

FourthPoint

The fourth point of the text area, which is usually the bottom-left corner.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	FourthPoint	int array	[0, 100]

Json Parameter Example

{
    "FourthPoint":[10, 20]
}

CharacterModelName

Sets the name of a white list of recognizable characters.

Remarks
If you set a character model, the result will only contain characters within the model.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	CharacterModelName	string	””

Json Parameter Example

{
    "CharacterModelName":"CharacterModel_Name1"
}

GrayscaleTransformationModes

Please check LabelRecognizerParameter.GrayscaleTransformationModes for reference.

LetterHeightRange

Sets the range of letter height (in pixel or a percentage value relative to the height of the text area).

Remarks
Format: [MinHeight, MaxHeight, ByPercentage]
The allowed values for MinHeight/MaxHeight:
ByPercentage=0, [1, 0x7fffffff]
ByPercentage=1, [1, 100]
The allowed values for ByPercentage: [0,1]

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	LetterHeightRange	int array	[1,100,1]

Json Parameter Example

{
    "LetterHeightRange":[40,60,1]
}

LineSpecificationNameArray

Specifies the name array of the LineSpecification objects which is relative to current text area.

Remarks
An array item is a name of any available LineSpecification.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	LineSpecificationNameArray	string Array	`null`

Json Parameter Example

{
    "LineSpecificationNameArray":[
        "LineSpecification1",
        "LineSpecification2"
    ]
}

LineStringLengthRange

Sets the range of string length for each recognized line.

As Json Parameter LineStringLengthRange as a JSON parameter is a JSON Object with two keys MinValue and MaxValue for setting the range of string length for each recognized line. Default values will be used if there is no manual setting.

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	LineStringLengthRange	JSON Object	`null`

Remarks
Value range of MinValue and MaxValue: [0, 0x7fffffff]
MaxValue >= MinValue

Json Parameter Example

{
    "LineStringLengthRange": [4,200]
}

LineStringRegExPattern

Specifies the regular expression pattern of each line string text in current text area to recognize.

Remarks

All LineSpecification Objects without LineStringRegExPattern set will be set from this setting.
Supported regular expressions pattern syntax is same as TextRegExPattern.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	LineStringRegExPattern	string	””

Json Parameter Example

{
    "LineStringRegExPattern":""
}

MaxLineCharacterSpacing

Sets the maximum spacing between characters treated as one line.

Remarks

0: means automatically set by the library.
It is a percentage value relative to the average letter height of each line.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Value Range	Default Value
TextArea	MaxLineCharacterSpacing	int	[0, 0x7fffffff]	0

Json Parameter Example

{
    "MaxLineCharacterSpacing":200
}

TextStringLengthRange

Sets the range of string length for each recognized text area.

As Json Parameter TextStringLengthRange as a JSON parameter is a JSON Object with two keys MinValue and MaxValue for setting the range of string length for each recognized text area. Default values will be used if there is no manual setting.

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	TextStringLengthRange	JSON Object	`null`

Remarks
Value range of MinValue and MaxValue: [0, 0x7fffffff]
MaxValue >= MinValue

Json Parameter Example

{
    "TextStringLengthRange": 
    {
        "MinValue": 4,
        "MaxValue": 200
    }
}

TextRegExPattern

Specifies the regular expression pattern of the text to recognize.

Remarks
Supported regular expressions pattern syntax is same as TextRegExPattern.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	TextRegExPattern	string	””

Json Parameter Example

{
    "TextRegExPattern":""
}

DictionaryPath

Sets the path of the dictionary file.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	DictionaryPath	string	””

Json Parameter Example

{
    "DictionaryPath":"D:\\DictModel\\nutrition.txt"
}

DictionaryCorrectionThresholds

Sets the threshold of dictionary error correction.

Remarks
It supports segmentation threshold.

As Json Parameter

Json Object	Json Parameter Name	Value Type	Default Value
TextArea	DictionaryCorrectionThresholds	Array	`null`

MinWordLength: The minimum value of word length.
MaxWordLength: The maximum value of word length.
Threshold: The threshold for the number of error correction characters.

Json Parameter Example

{
    "DictionaryCorrectionThresholds": [
        {
            "MinWordLength": 3,
            "MaxWordLength": 5,
            "Threshold": 1
        },
        {
            "MinWordLength": 6,
            "MaxWordLength": 10,
            "Threshold": 2
        },
        {
            "MinWordLength": 11,
            "Threshold": 3
        }
    ]

}

BinarizationModes

Please check LabelRecognizerParameter.BinarizationModes for reference.

ColourConversionModes

Please check LabelRecognizerParameter.ColourConversionModes for reference.

GrayscaleEnhancementModes

Please check LabelRecognizerParameter.GrayscaleEnhancementModes for reference.

TextureDetectionModes

Please check LabelRecognizerParameter.TextureDetectionModes for reference.

CharacterNormalizationModes

Please check LabelRecognizerParameter.CharacterNormalizationModes for reference.