I have used another method, and it worked perfectly.
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=null;
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(220, 170, 380, 45); // 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(bufImage, rect);
//in.doOCR(xsize, ysize, buf, rect, bpp);
log.info("resultText: {}", resultText);
} catch (TesseractException e) {
e.printStackTrace();
}
}
On Saturday, June 9, 2018 at 3:07:02 PM UTC-4, Dattatraya Tembare wrote:
>
> 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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