I'm trying to read the text from an image at some particular location in an
image. I have image dimensions and desired rectangle dometions.
Here is the code implementation:
public static void main(String[] args) {
String fileStr = "C:/EA/mp-out/im/1/3/1-0.png";
File file = new File(fileStr);
//380x45+220+170
int xsize = 0;
int ysize = 0;
BufferedImage bufImage;
ByteBuffer buf = null;
try {
bufImage = ImageIO.read(file);
IIOImage image=new IIOImage(bufImage,null,null);
buf = ImageIOHelper.getImageByteBuffer(image);
} catch (IOException e2) {
e2.printStackTrace();
}
Rectangle rect = new Rectangle(0, 0, 600, 265); // define an equal or
smaller region of interest on the image
int bpp = 8; //Gray=8, RGB=24
Tesseract in = new ReadImageText().getTesseractInstance("C:/Program Files
(x86)/Tesseract-OCR/tessdata/", "hin");
try {
String resultText = in.doOCR(xsize, ysize, buf, rect, bpp);
log.info("resultText: {}", resultText);
} catch (TesseractException e) {
e.printStackTrace();
}
}
When I have executed the code, go below error:
java.lang.NullPointerException: null
at net.sourceforge.tess4j.Tesseract.getOCRText(Tesseract.java:434)
at net.sourceforge.tess4j.Tesseract.doOCR(Tesseract.java:351)
at net.sourceforge.tess4j.Tesseract.doOCR(Tesseract.java:323)
at com.ea.ocr.tesseract.ReadImageText.main(ReadImageText.java:74)
Please look into it and let me know if anyone has any idea.
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