handwriterecognizer's Introduction

HandWriteRecognizer

封装Microsoft.Ink为C++动态库，可供其他语言调用手写识别

在java中使用

根据windows系统下载release中的win32.zip或win64.zip。其中HandWriteRecognizerLib.dll为C++动态库，Microsoft.Ink.dll为微软手写识别库，HandWriteRecognizerCSharp.dll是C#封装的中间层。将C#的两个dll拷贝到java的bin目录，如果java是32位拷贝win32的，如果java是64位的拷贝win64的。

jna引用HandWriteRecognizerLib.dll

识别接口：

char* recognizer(char* strokes, int count)

strokes入参为笔画字符串，多个笔画用,eb,分割，笔画中的每个点按x1,y1,x2,y2,x3,y3顺序拼接。如x1,y1,x2,y2,x3,y3,eb,x1,y1,x2,y2,...

count入参为返回的最大识别字符数，返回接口可能小于等于该数。

返回为识别结果字符串，字符以英文空格间隔。

调用示例

定义jna接口

public interface HandWriteRecognizerLibrary  extends Library {
    //虽然loadLibrary已过时，不过试了load在springboot网站无法正常加载，原因未知。
    HandWriteRecognizerLibrary INSTANCE = Native.loadLibrary("HandWriteRecognizerLib", HandWriteRecognizerLibrary.class);
    Pointer recognizer(Pointer strokes, int count); 

}

调用jna接口

Pointer strokesStrPointer = new Memory(strokesStr.length());
byte[] bytes = strokesStr.getBytes();
strokesStrPointer.write(0, bytes, 0, bytes.length);
Pointer result = new Memory(count * 2);
result = HandWriteRecognizerLibrary.INSTANCE.recognizer(strokesStrPointer, count);
String temp = result.getString(0);
if (StringUtils.isEmpty(temp)) {
    return new String[0];
} else {
    return temp.split(" ");
}

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