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How do I extract text from images or infographics?
Tesseract OCR is my primary tool for extracting text from images. It works best with high-contrast text, like dark text on a light background.
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7 Replies
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Google Vision API is very accurate, though it’s a paid option. It handles complex images and varying fonts better than most free tools.
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Pre-processing images by enhancing contrast or converting to grayscale improves OCR accuracy significantly.
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Breaking down the image into smaller sections allows for more focused OCR processing, especially with multi-section infographics.
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I use layout analysis tools to detect text regions, which allows me to extract text while ignoring non-text elements.
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For infographics with repetitive layouts, I train custom OCR models to recognize and extract specific patterns more accurately.
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Combining OCR with template matching helps detect and pull text from specific areas, like headers or labels in charts.
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Some sites offer high-resolution downloads, so I scrape these versions to improve the OCR output compared to low-quality images.
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