(See article on 24-pin printers elsewhere in this issue.)īut new hardware is only one approach. Enter a new generation of printers equipped to do both-complete with higher price tags. If only a speedy dot matrix printer could produce letter quality printout, too. Characters are boxy and half-formed, and the effect is often impersonal, mass produced, and printed-by-computer.Ī growing number of inexpensive daisywheel printers compete for the lowpriced letter quality printer market, but most are snail-slow, which makes the printing of rough drafts a truly tedious experience. Dot matrix printers are often sturdier, less expensive, and much faster, but their output can be hard to read. Unfortunately, the fastest letter quality printers cost more than many microcomputers, and their repair bills can be stunning. Is there a command to see how Tesseract performs connected component analysis on this image? Expected Behavior: Perform better on dot-matrix fonts where the dots are spaced far apart Suggested Fix: Understand if connected component analysis fails.Printer enhancers give your dot matrix printer new personality and style.Įveryone who buys a personal computer daydreams about the perfect printer. Since the letters in a dot-matrix font do not form connected components, I am wondering if Tesseract's connected component analysis may be one reason that Tesseract struggles on the image attached. I read in An Overview of the Tesseract OCR Engine that the first step in Tesseract's processing pipeline is a connected component analysis (second paragraph of Section 2). However, when the dots do not touch, as in the picture, Tesseract struggles. When the dots are closely spaced together and touch, Tesseract can more or less handle the dot-matrix font with some fine-tuning and image processing. Platform: uname -a output: Linux CUDA1 4.15.0-29-generic #31~16.04.1-Ubuntu SMP Wed Jul 18 08:54: x86_64 x86_64 x86_64 GNU/LinuxĭISTRIB_DESCRIPTION="Ubuntu 18.04 LTS" Current Behavior: I am trying to fine-tune Tesseract for dot-matrix fonts such as that in the attached picture.
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