Invoice recognition settings

Aspose.OCR for Java allows for very flexible customization of invoice recognition accuracy, performance, and other settings by configuring the properties of the InvoiceRecognitionSettings object.

These settings are specifically tailored for processing scanned or photographed invoices.

Setting	Type	Default value	Description
`setAllowedCharacters`	Case-sensitive string of characters or one of the predefined character sets: `CharactersAllowedType.ALL` - try to recognize all characters. `CharactersAllowedType.LATIN_ALPHABET` - only recognize case-insensitive Latin / English text (`A` to `Z` and `a` to `z`), without accented characters. `CharactersAllowedType.DIGITS` - recognize only binary, octal, decimal, or hexadecimal numbers (`0`-`9` and `A` to `F`).	All characters from the selected recognition language.	The whitelist of characters Aspose.OCR engine will look for.
`setIgnoredCharacters`	Case-sensitive string of characters	All characters are recognized	A blacklist of characters that are ignored during recognition.
`setLanguage`	Recognition language	Extended Latin characters, including diacritics	Specify a language for recognition.
`setThreadsCount`	Number of threads, `int`	Automatic	The number of CPU threads used for recognition.
`setAutomaticColorInversion`	boolean	`true`	Set the method parameter to `true` automatically detect white text on a dark/black background and use a special OCR algorithm to improve invoice recognition accuracy. Call this method with the parameter set to “false” to explicitly disable inverted text detection to save resources.

Applicable to

Extracting text from an invoice

Example

The following code example shows how to fine-tune invoice recognition:

AsposeOCR api = new AsposeOCR();
// Add images to the recognition batch
OcrInput input  = new OcrInput(InputType.SingleImage);
input.add(os.path.join(self.dataDir, "invoice1.png"));
input.add(os.path.join(self.dataDir, "invoice2.png"));
// Recognition settings
InvoiceRecognitionSettings recognitionSettings = new InvoiceRecognitionSettings();
recognitionSettings.setLanguage(Language.Ukr);
// Recognize invoices
ArrayList<RecognitionResult> results = api.RecognizeInvoice(input, recognitionSettings);
results.forEach((result) -> {
	System.out.println(result.recognition_text);
});

Car plate recognition settings