Java motion Blur

Java motion Blur Code

Want to use Java write a motion blur effect, helpless I level limited, domestic also did not find resources, so Google to a document, specially share out!

This code originates from http://www.jhlabs.com/ip/blurring.html

Java motion blur algorithm:

Import java.awt.*;import java.awt.geom.*;import java.awt.image.*;p ublic class Motionblurop extends    Abstractbufferedimageop {private float CentreX = 0.5f, Centrey = 0.5f;                private float distance=20.0f;    Here set the movement distance private float angle;    private float rotation;    private float zoom; Public Motionblurop () {} public Motionblurop (float distance, float angle, float rotation, float zoom) {th        Is.distance = distance;        This.angle = angle;        This.rotation = rotation;    This.zoom = zoom;    } public void Setangle (float angle) {this.angle = angle;    } public float Getangle () {return angle;    } public void Setdistance (float distance) {this.distance = distance;    } public float Getdistance () {return distance;    } public void Setrotation (float rotation) {this.rotation = rotation;    } public float Getrotation () {return rotation; } public void Setzoom (float zoom ) {this.zoom = zoom;    } public float Getzoom () {return zoom;    } public void Setcentrex (float centreX) {This.centrex = CentreX;    } public float Getcentrex () {return centreX;    } public void Setcentrey (float centrey) {This.centrey = Centrey;    } public float Getcentrey () {return centrey;        } public void Setcentre (POINT2D centre) {This.centrex = (float) centre.getx ();    This.centrey = (float) centre.gety ();    } public point2d Getcentre () {return new Point2d.float (CentreX, Centrey);        } private int log2 (int n) {int m = 1;        int log2n = 0;            while (M < n) {m *= 2;        log2n++;    } return log2n; Public bufferedimage filter (bufferedimage src, bufferedimage DST) {if (DST = = null) DST = Crea        Tecompatibledestimage (SRC, null);        BufferedImage tsrc = src; float cx = (float) src.getwidth () * CENtrex;        float cy = (float) src.getheight () * Centrey;        float Imageradius = (float) math.sqrt (cx*cx + cy*cy);        float TranslateX = (float) (distance * Math.Cos (angle));        float Translatey = (float) (distance *-math.sin (angle));        float scale = zoom;        float rotate = rotation;        float maxdistance = distance + math.abs (Rotation*imageradius) + Zoom*imageradius;        int steps = log2 ((int) maxdistance);        TranslateX/= maxdistance;        Translatey/= maxdistance;        Scale/= maxdistance;        Rotate/= maxdistance;            if (steps = = 0) {graphics2d g = dst.creategraphics ();            G.drawrenderedimage (SRC, null);            G.dispose ();        return DST;        } bufferedimage tmp = createcompatibledestimage (SRC, null);            for (int i = 0; i < steps; i++) {graphics2d g = tmp.creategraphics ();            G.drawimage (TSRC, NULL, NULL); G.setrenderinghint (Renderinghints.key_antialiasing, renderinghints.value_antialias_on);            G.setrenderinghint (Renderinghints.key_interpolation, renderinghints.value_interpolation_bilinear);            G.setcomposite (Alphacomposite.getinstance (Alphacomposite.src_over, 0.5f));            G.translate (Cx+translatex, Cy+translatey);  G.scale (1.0001+scale, 1.0001+scale);  The. 0001 works round a bug on Windows where DrawImage throws an arrayindexoutofboundexception if (rotation            ! = 0) g.rotate (rotate);            G.translate (-CX,-cy);            G.drawimage (DST, NULL, NULL);            G.dispose ();            BufferedImage ti = DST;            DST = tmp;            tmp = TI;            TSRC = DST;            TranslateX *= 2;            Translatey *= 2;            Scale *= 2;        Rotate *= 2;    } return DST;    The public String toString () {return "blur/motion Blur ..."; }}

Test code:

import javax.imageio.ImageIO;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;/** * Created by zdmein on 2018/1/10. */public class MotionBlurOpTest {    public static void main(String [] args) throws IOException {        BufferedImage sourceImage = ImageIO.read(new File("flower.jpg"));        MotionBlurOp filter=new MotionBlurOp();        BufferedImage destImage=filter.filter(sourceImage,null);        ImageIO.write(destImage, "PNG", new File("MotionBlurOpflower.jpg"));    }}

Java motion Blur