Hi, I am new to OpenCV and using BlobDetection library but need to direct the script to use a local video file instead of the camera. Here is the original script. Would love someone's help please. Thank you.
Using MacOS 64bit
// - Super Fast Blur v1.1 by Mario Klingemann http://incubator.quasimondo.com // - BlobDetection library
import processing.video.; import blobDetection.;
Capture cam; BlobDetection theBlobDetection; PImage img; boolean newFrame=false;
// ================================================== // setup() // ================================================== void setup() { // Size of applet size(640, 480); // Capture cam = new Capture(this, 404, 304, 15); // Comment the following line if you use Processing 1.5 cam.start();
// BlobDetection
// img which will be sent to detection (a smaller copy of the cam frame);
img = new PImage(80,60);
theBlobDetection = new BlobDetection(img.width, img.height);
theBlobDetection.setPosDiscrimination(true);
theBlobDetection.setThreshold(0.9f); // will detect bright areas whose luminosity > 0.2f;
}
// ================================================== // captureEvent() // ================================================== void captureEvent(Capture cam) { cam.read(); newFrame = true; }
// ================================================== // draw() // ================================================== void draw() { if (newFrame) { newFrame=false; image(cam,0,0,width,height); img.copy(cam, 0, 0, cam.width, cam.height, 0, 0, img.width, img.height); fastblur(img, 2); theBlobDetection.computeBlobs(img.pixels); drawBlobsAndEdges(true,true); } }
// ================================================== // drawBlobsAndEdges() // ================================================== void drawBlobsAndEdges(boolean drawBlobs, boolean drawEdges) { noFill(); Blob b; EdgeVertex eA,eB; for (int n=0 ; n<theblobdetection.getblobnb() ;="" n++)="" {="" b="theBlobDetection.getBlob(n);" if="" (b!="null)" {="" edges="" if="" (drawedges)="" {="" strokeweight(3);="" stroke(0,255,0);="" for="" (int="" m="0;m<b.getEdgeNb();m++)" {="" ea="b.getEdgeVertexA(m);" eb="b.getEdgeVertexB(m);" if="" (ea="" !="null" &&="" eb="" !="null)" line(="" ea.x<em="">width, eA.yheight, eB.xwidth, eB.yheight ); } }
// Blobs
if (drawBlobs)
{
strokeWeight(1);
stroke(255,0,0);
rect(
b.xMin*width,b.yMin*height,
b.w*width,b.h*height
);
}
}
}
}
// ================================================== // Super Fast Blur v1.1 // by Mario Klingemann // http://incubator.quasimondo.com // ================================================== void fastblur(PImage img,int radius) { if (radius<1){ return; } int w=img.width; int h=img.height; int wm=w-1; int hm=h-1; int wh=wh; int div=radius+radius+1; int r[]=new int[wh]; int g[]=new int[wh]; int b[]=new int[wh]; int rsum,gsum,bsum,x,y,i,p,p1,p2,yp,yi,yw; int vmin[] = new int[max(w,h)]; int vmax[] = new int[max(w,h)]; int[] pix=img.pixels; int dv[]=new int[256div]; for (i=0;i<256*div;i++){ dv[i]=(i/div); }
yw=yi=0;
for (y=0;y<h;y++){ rsum="gsum=bsum=0;" for(i="-radius;i<=radius;i++){" p="pix[yi+min(wm,max(i,0))];" rsum+="(p" &="" 0xff0000)>>16;="" gsum+="(p" &="" 0x00ff00)>>8;="" bsum+="p" &="" 0x0000ff;="" }="" for="" (x="0;x<w;x++){</p">
r[yi]=dv[rsum];
g[yi]=dv[gsum];
b[yi]=dv[bsum];
if(y==0){
vmin[x]=min(x+radius+1,wm);
vmax[x]=max(x-radius,0);
}
p1=pix[yw+vmin[x]];
p2=pix[yw+vmax[x]];
rsum+=((p1 & 0xff0000)-(p2 & 0xff0000))>>16;
gsum+=((p1 & 0x00ff00)-(p2 & 0x00ff00))>>8;
bsum+= (p1 & 0x0000ff)-(p2 & 0x0000ff);
yi++;
}
yw+=w;
}
for (x=0;x<w;x++){ rsum="gsum=bsum=0;" yp="-radius<em">w; for(i=-radius;i<=radius;i++){ yi=max(0,yp)+x; rsum+=r[yi]; gsum+=g[yi]; bsum+=b[yi]; yp+=w; } yi=x; for (y=0;y<h;y++){ pix[yi]="0xff000000" |="" (dv[rsum]<<16)="" |="" (dv[gsum]<<8)="" |="" dv[bsum];="" if(x="=0){" vmin[y]="min(y+radius+1,hm)</em">w; vmax[y]=max(y-radius,0)*w; } p1=x+vmin[y]; p2=x+vmax[y];
rsum+=r[p1]-r[p2];
gsum+=g[p1]-g[p2];
bsum+=b[p1]-b[p2];
yi+=w;
}
}
}
