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Low contrast and blurring are the most typical distortions when text is photographed with a smartphone camera, especially in low light conditions. They make it difficult for the OCR algorithms to operate successfully, significantly reducing the recognition accuracy.
Aspose.OCR for JavaScript via C++ can automatically increase the contrast of images before proceeding to recognition.
To automatically increase the image contrast before recognition, set auto_contrast
recognition setting to true
.
var settings = Module.WasmAsposeOCRRecognitionSettings();
settings.auto_contrast = true;
Automatic contrast adjustment is recommended for the following images:
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