Pre-processing
Pre-processing or Image Processing for OCR (Optical Character Recognition) involve a series of steps or techniques applied to an image or text image before the character recognition process takes place. The goal is to prepare the image in a suitable and optimal manner for character recognition.
To improve the OCR accuracy, it's important to ensure that the input image is clear, well-lit, and devoid of visual distortions that could hinder character recognition.
Pre-processing Options
Image Upscaler
Increase resolution or size of an image
Image Filter
Filter with background removal function. There are 3 options (Black Text, White Text & Color Text)
Image Adjustments
Greyscale
Normalize
Invert
Threshold
Lightness
Brightness
Sharpen
All these preprocessing steps are designed to maximize the quality of the text image before the character recognition process begins. A good-quality image will assist the OCR system in recognizing characters with higher accuracy. Keep in mind that the specific pre-processing functions applied may vary based on the characteristics of the input images.
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