本文介绍了使用OCR从Image文件中读取文本的API的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在寻找Java中OCR(光学字符识别)的示例代码或API名称,使用它我可以从图像文件中提取所有文本。不将它与我在代码下面使用的任何图像进行比较。
I am looking out for an example code or API name from OCR (Optical character recognition) in Java using which I can extract all text present from an image file. Without comparing it with any image which I am doing using below code.
public class OCRTest {
static String STR = "";
public static void main(String[] args) {
OCR l = new OCR(0.70f);
l.loadFontsDirectory(OCRTest.class, new File("fonts"));
l.loadFont(OCRTest.class, new File("fonts", "font_1"));
ImageBinaryGrey i = new ImageBinaryGrey(Capture.load(OCRTest.class, "full.png"));
STR = l.recognize(i, 1285, 654, 1343, 677, "font_1");
System.out.println(STR);
}
}
推荐答案
你可以尝试或。我后来认为它比前者更容易。
将依赖项添加到您的pom中`
You can try Tess4j or JavaCPP Presets for Tesseract. I perfer later as its easier than the former.Add the dependency to your pom `
<dependency>
<groupId>org.bytedeco.javacpp-presets</groupId>
<artifactId>tesseract-platform</artifactId>
<version>3.04.01-1.3</version>
</dependency>
`
及其简单代码
`And its simple to code
import org.bytedeco.javacpp.*;
import static org.bytedeco.javacpp.lept.*;
import static org.bytedeco.javacpp.tesseract.*;
public class BasicExample {
public static void main(String[] args) {
BytePointer outText;
TessBaseAPI api = new TessBaseAPI();
// Initialize tesseract-ocr with English, without specifying tessdata path
if (api.Init(null, "eng") != 0) {
System.err.println("Could not initialize tesseract.");
System.exit(1);
}
// Open input image with leptonica library
PIX image = pixRead(args.length > 0 ? args[0] : "/usr/src/tesseract/testing/phototest.tif");
api.SetImage(image);
// Get OCR result
outText = api.GetUTF8Text();
System.out.println("OCR output:\n" + outText.getString());
// Destroy used object and release memory
api.End();
outText.deallocate();
pixDestroy(image);
}
}
Tess4j有点复杂,因为它需要特定的VC ++可再发行组件包要安装。
Tess4j is little complex as its requires specific VC++ redistributable package to be installed.
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