android中的自由手字符识别 [英] Free hand character recognition in android

问题描述

我们正在开发一个涉及自由手字符识别的Android应用程序。
应用程序要求学生在android屏幕上绘制字母表的自由图像，并且应用程序处理绘制的图像并返回写入的字母的准确性。

We are working on an android application that involves free hand character recognition. The application requires to student to draw the free hand image of an alphabet on the android screen,and the application process the image drawn and returns the accuracy of the alphabet written.

我们正在考虑两个选项
a。使用tesseract。
b。使用我们自己仍在使用的算法

We are considering two options a. Using tesseract. b. Using our own algorithm on which we are still working

问题

a。 Tesseract完全没有帮助识别自由手形字符。我们非常感谢您提供有关如何训练tesseract的任何指示。

a. Tesseract is not at all helping in recognizing free hand characters.Any pointers on how to train tesseract for the same will be highly appreciated.

b。我们的算法都没有达到我们的预期。

b. None of our algorithm are working to our expectation.

推荐答案

Tesseract实际上是识别写入屏幕的字符的错误方法，因为它不必要地丢弃了一些非常有价值的信息：图像如何最初是绘制的。它如何分解成笔画，每个笔画的顺序/方向等等 - 当你的软件已经知道它时，Tesseract必须花费大量的时间来弄清楚每个角色的底层结构。

Tesseract is actually the wrong approach for recognizing characters written to the screen because it needlessly discards some very valuable info: how the image was originally drawn. How it breaks down into strokes, the order / direction of each stroke, etc - Tesseract has to spend a tremendous amount of time trying to figure out the underlying structure of each character when your software already knows it.

你想要的是一个真正的手写识别库，而不仅仅是像Tesseract这样的OCR库;你特别需要一个在线手写识别库，在线意味着你可以捕获用户绘制到屏幕的实际点序列。有许多开源库可用于此，例如 Unipen 和 LipiTk 。

What you want is an actual "handwriting recognition" library, not just an OCR library like Tesseract; you specifically want an "online" handwriting recognition library, "online" meaning that you can capture the actual sequence of points that the user drew to the screen. There are a number of open-source libraries available for this, for example Unipen and LipiTk.

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