How to Read 7-Segment Digital LCD Displays with OCR
Can IronOCR read 7-segment digital displays?
Seven-segment digital display text has multiple breaks in each character, which is the opposite of what standard OCR programs are looking for - this is called the character separability principle.
Some image pre-processing would be necessary to blur the characters, removing the breaks.
For deeper processing to achieve reliable OCR results, we recommend ImageMagick for .NET as a free and very well-documented tool with filters comparable to Photoshop. You can find the package here: Magick.NET-Q8-AnyCPU.
https://www.nuget.org/packages/Magick.NET-Q8-AnyCPU/
IronOCR can also use custom language packs, so you might try the LetsGoDigital Tesseract language pack, which is specifically tuned for 7-segment displays: Tesseract_sevenSegmentsLetsGoDigital.
For more information on adding a custom language pack in IronOCR, visit IronOCR Language Guide.
Curtis Chau holds a Bachelor’s degree in Computer Science (Carleton University) and specializes in front-end development with expertise in Node.js, TypeScript, JavaScript, and React. Passionate about crafting intuitive and aesthetically pleasing user interfaces, Curtis enjoys working with modern frameworks and creating well-structured, visually appealing manuals.
