Question

我有一个项目来找到一个文本嵌入图像旋转角度，我正在使用Tess4j所以如何获得正确的图像方向角度Tess4j中有任何选项可以正确的方向旋转图像...

如果我将图像作为输入，那么输出应该是正确的方向图像...第一个图像作为输入，2n一个输出，所以我该怎么办.... plzz帮助我 input image desire output image

Answer 1

用于图像方向和页面分割

public class TestOrientation {
    public static void D() throws Exception {

        TessAPI api=LoadLibs.getTessAPIInstance();
        TessBaseAPI handle=TessAPI1.TessBaseAPICreate();

        File tiff = new File("C:/Users/atul/Desktop/test1.tif");
        String datapath = "C:/Tesseract/tessdata";
        String language = "eng";
        int expResult = TessPageSegMode.PSM_AUTO_OSD;
        IntBuffer orientation = IntBuffer.allocate(1);
        IntBuffer direction = IntBuffer.allocate(1);
        IntBuffer order = IntBuffer.allocate(1);
        FloatBuffer deskew_angle = FloatBuffer.allocate(1);

        BufferedImage image = ImageIO.read(new FileInputStream(tiff)); // require jai-imageio lib to read TIFF
        ByteBuffer buf = ImageIOHelper.convertImageData(image);
        int bpp = image.getColorModel().getPixelSize();
        int bytespp = bpp / 8;
        int bytespl = (int) Math.ceil(image.getWidth() * bpp / 8.0);
        api.TessBaseAPIInit3(handle, datapath, language);
        api.TessBaseAPISetPageSegMode(handle, TessPageSegMode.PSM_AUTO_OSD);
        int actualResult = api.TessBaseAPIGetPageSegMode(handle);

        api.TessBaseAPISetImage(handle, buf, image.getWidth(), image.getHeight(), bytespp, bytespl);
        int success = api.TessBaseAPIRecognize(handle, null);
        if (success == 0) {
            TessPageIterator pi = api.TessBaseAPIAnalyseLayout(handle);
            api.TessPageIteratorOrientation(pi, orientation, direction, order, deskew_angle);
            System.out.println("Orientation:" + orientation.get()+
                "\nWritingDirection:"+Utils.getConstantName(direction.get(), TessWritingDirection.class)+
                " \nTextlineOrder:" + Utils.getConstantName(order.get(), TessTextlineOrder.class)+
                "\nDeskew angle: %.4f\n"+deskew_angle.get());
        }
    }

    public static void main(String[] args) {
        try {
            D();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

Answer 2

BufferedImage image = ImageIO.read(new File("C:\\myimg-tilt.jpg"));
ImageDeskew id = new ImageDeskew(image);
image = ImageHelper.rotateImage(image, -id.getSkewAngle());

Answer 3

您可以使用OpenCV进行此操作。首先，您需要计算图像的倾斜角度。然后，您可以使用您找到的角度旋转图像。

您可以查看此链接。这真的很有帮助。但是你需要将它实现为Java。

http://felix.abecassis.me/2011/09/opencv-detect-skew-angle/

Answer 4

Tess4J既支持确定图像的倾斜角度又旋转图像。查看其API documentation页面了解更多信息。

使用tesseract / tess4j OCR进行文本嵌入图像方向检测

4 个答案: