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裁剪 MBFImage

我使用精湛的 openimaj 库 1.3.8 检测到一张脸，但我努力从原始图像中裁剪人脸并将裁剪的人脸保存到某个文件中。裁剪的面孔必须是 800x600 像素，所以我也需要一些缩放。

这一定是一个简单的任务，但是 api 很大，我找不到适合这个用例的教程

也许你告诉我在哪里可以找到信息？

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import org.openimaj.image.DisplayUtilities;
import org.openimaj.image.FImage;
import org.openimaj.image.ImageUtilities;
import org.openimaj.image.MBFImage;
import org.openimaj.image.colour.RGBColour;
import org.openimaj.image.colour.Transforms;
import org.openimaj.image.processing.face.detection.DetectedFace;
import org.openimaj.image.processing.face.detection.FaceDetector;
import org.openimaj.image.processing.face.detection.HaarCascadeDetector;
import org.openimaj.math.geometry.shape.Rectangle;


public class App {
    public static void main(String[] args) throws Exception, IOException {


        final MBFImage image = ImageUtilities.readMBF(new File("d:\\java\\face\\bin.jpeg"));

        FaceDetector<DetectedFace, FImage> fd = new HaarCascadeDetector(200);
        List<DetectedFace> faces = fd.detectFaces(Transforms.calculateIntensity(image));
        System.out.println("# Found faces, one per line.");
        System.out.println("# <x>, <y>, <width>, <height>");

        for (Iterator<DetectedFace> iterator = faces.iterator(); iterator.hasNext();) {
            DetectedFace face = iterator.next();
            Rectangle bounds = face.getBounds();

            image.drawShape(face.getBounds(), RGBColour.RED);

            // System.out.println(bounds.x + ";" + bounds.y + ";" + bounds.width + ";" +
            // bounds.height);

        }

        DisplayUtilities.display(image);

    }
}
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1 回答 1

0

解决了

        DetectedFace face = iterator.next();
        Rectangle bounds = face.getBounds();

        Point2d center = bounds.calculateCentroid();

        // image.drawShape(bounds, RGBColour.RED);

        // auf 800 x 600 bringen

        float b = (bounds.width * 800) / 600;

        MBFImage crop = image.extractCenter(
                (int) center.getX() , 
                (int) center.getY()  ,
                (int) bounds.width , 
                (int) b  ) ;


        ResizeProcessor resize = new ResizeProcessor(800,600);
        MBFImage small = crop.processInplace(resize);

        DisplayUtilities.display(small);
于 2019-07-14T18:00:59.313 回答