Good luck, and please let us know what you come up with. If these are the only scenarios, white-on-black is always solid background, and black-on-color is always seven- segment-display, then you're done.

If not, I suspect you could look at image color histograms to at least figure out whether your text is white-on-black or black-on-color. Don't worry, our files are safe from malware or viruses. Click the download button to download the compressed file in. The author works at company http fontstruct com. If you have metadata telling you what sort of display you're dealing with, great. The 7 Segment Normal Regular font was designed by brynda1231. If in the Fonts folder, use this syntax when including the file: This guide was first published on Jul 29, 2012. Hexadecimal is designed by Benjamin Blholtz is a free font with a sci-fi retro style. This multilingual font supports necessary features for your designs and is free for personal use. The hard part then becomes knowing which preprocessing task to do. h file can be copied to the AdafruitGFX/Fonts folder, or you can import the file as a new tab in your Arduino sketch using the SketchAdd File command. Seven Segment is a techno font presented by Krafti Lab. An easy first pass might be to do a small-radius gaussian blur, threshold at a pretty low value (you're trying to keep only black, so 15% seems right), and then invert the image. Using some image manipulation tool (I happen to like imagemagick), you need to make the images more to tesseract's satisfaction. If Font Book crashes, restart Font Book, select the first font in the list and scroll through the fonts using the Down Arrow key to determine which font caused the crash. It is not very smart about how to do this. Click the checkbox next to any damaged or duplicate fonts and click Removed Checked. If you give it something that isn't that, it will do its best to convert it to that format.

Tesseract would really prefer its images to all be white-on-black text in bitmap format. This seems like an image preprocessing task.

7 segment ttf