From ed539c88af8e18ae3b505e324319b956944e0d91 Mon Sep 17 00:00:00 2001
From: Comment <tim@gray.(none)>
Date: Tue, 29 Jan 2013 17:23:14 +0000
Subject: working with accumulation

---
 src/boundary.cpp |  18 ++++++--
 src/boundary.h   |   7 +--
 src/testApp.cpp  | 137 ++++++++++++++++++++++++++++++++++---------------------
 src/testApp.h    |  23 +++++++---
 4 files changed, 122 insertions(+), 63 deletions(-)

(limited to 'src')

diff --git a/src/boundary.cpp b/src/boundary.cpp
index 2425c4a..3e5b18c 100755
--- a/src/boundary.cpp
+++ b/src/boundary.cpp
@@ -37,13 +37,15 @@ void boundary::undo(){
 }
 
 void boundary::getCentroid(){
-	float x=0;
 	float y=0;
+	float maxx=-1;
+	float minx=100000;
 	for (int i=0;i<points.size();i++) {
-		x+=points[i].x;
 		y+=points[i].y;
+		minx=min(minx,points[i].x);
+		maxx=max(maxx,points[i].x);
 	}
-	centroid=ofPoint(x/points.size(),y/points.size(),0);
+	centroid=ofPoint(minx+((maxx-minx)*0.1),y/points.size(),0);
 }
 
 bool boundary::contains(ofPoint p)
@@ -77,6 +79,16 @@ bool boundary::contains(ofPoint p)
     return false;
   else
     return true;
+}
+int boundary::findPoint(ofPoint pos){
+    int threshold=6;
+    int selected=-1;
+    for (int i=0;i<points.size();i++) {
+        if (abs(points[i].x-pos.x)<=threshold&&abs(points[i].x-pos.x)<=threshold) {
+            selected=i;
+        }
+    }
+    return selected;
 }
 void boundary::openFile(string file) {
 	filename=file;
diff --git a/src/boundary.h b/src/boundary.h
index bf0b780..e3eb011 100755
--- a/src/boundary.h
+++ b/src/boundary.h
@@ -16,13 +16,14 @@ class boundary
         void add(ofPoint p);
         void undo();
         void getCentroid();
-        vector<ofPoint> points;
-        ofPoint centroid;
+        vector<ofPoint> points;
+        int findPoint(ofPoint pos);
         bool checkClick(ofPoint pos);
         bool checkFile(ofPoint pos,string file);
         void openFile(string file);
         void setVolume(float vol);
-
+
+        ofPoint centroid;
         string filename;
         ofSoundPlayer sound;
 };
diff --git a/src/testApp.cpp b/src/testApp.cpp
index 0392c92..5928ee5 100755
--- a/src/testApp.cpp
+++ b/src/testApp.cpp
@@ -18,15 +18,17 @@ void testApp::setup(){
 	gh=576;
 
 	vidGrabber.setVerbose(true);
-	bGrab=false;
-	//vidGrabber.initGrabber(gw,gh); //base grab size
+	bGrab=vidGrabber.initGrabber(gw,gh); //base grab size
+	
+	learningRate = 0.01f;
 
 	colorImg.allocate(gw,gh);
 	grayImage.allocate(gw,gh);
 	grayBg.allocate(gw,gh);
 	grayDiff.allocate(gw,gh);
 
-	mode=COLOUR;
+	mode=DISPLAY_FG;
+	method=METHOD_SIMPLE;
 
 	bLearnBakground = true;
 
@@ -34,6 +36,7 @@ void testApp::setup(){
 		boundaries.push_back(boundary());
 	}
 	selectedBoundary=0;
+	selectedPoint=-1;
 
 	guiWin=new guiWindow();
 	ofxFenster* win=ofxFensterManager::get()->createFenster(0, 0,  200, 200, OF_WINDOW);
@@ -45,44 +48,61 @@ void testApp::setup(){
 	gui.add(vol.setup("volume",volume,0,1.0,255));
 	vol.addListener(this,&testApp::volumeChanged);
 	gui.add(bFlip.setup("flip grab", flip));
+	bFlip.addListener(this,&testApp::resetBG);
 	gui.add(bInvert.setup("invert grab", invert));
+	bInvert.addListener(this,&testApp::resetBG);
 	gui.add(thresh.setup("threshold",threshold,0,255,255));
 	win->setWindowTitle("config");
 	win->addListener(guiWin);
 	guiWin->setup();
 	guiWin->setParent(this);
-
-
 }
 
 //--------------------------------------------------------------
 void testApp::update(){
 	if (bGrab) {
 	    vidGrabber.grabFrame();
-        bool bNewFrame = vidGrabber.isFrameNew();
-        if (bNewFrame){
-            colorImg.setFromPixels(vidGrabber.getPixels(), gw,gh);
-            if (bFlip) colorImg.mirror(false,true);
-            grayImage = colorImg;
-            if (bInvert) grayImage.invert();
-            if (bLearnBakground == true){
-                grayBg = grayImage;		// the = sign copys the pixels from grayImage into grayBg (operator overloading)
-                bLearnBakground = false;
-            }
-            grayDiff.absDiff(grayBg, grayImage);
-            grayDiff.threshold(threshold);
-            contourFinder.findContours(grayDiff, 20, (gw*gh)/3, 10, true);	// find holes
-        }
-
-        //generate events
-
-        for (int i = 0; i < contourFinder.nBlobs; i++){
-            for (int j=0;j<boundaries.size();j++) {
-                if (boundaries[j].checkClick(contourFinder.blobs[i].centroid)) {
-                    printf("playing %i: %s\n",boundaries[j].filename.c_str(),j);
-                }
-            }
-        }
+		bool bNewFrame = vidGrabber.isFrameNew();
+		if (bNewFrame){
+			colorImg.setFromPixels(vidGrabber.getPixels(), gw,gh);
+			if (bFlip) colorImg.mirror(false,true);
+			grayImage = colorImg;
+			if (bInvert) grayImage.invert();
+			switch(method) {
+				case METHOD_SIMPLE:
+					if (bLearnBakground){
+						grayBg = grayImage;
+						bLearnBakground = false;
+					}
+					break;
+				case METHOD_ACCUM:
+					cv::Mat img = grayImage.getCvImage();
+					//printf("img: %ix%i %i ch x %i bits\n",img.size().width,img.size().height,img.channels(),img.depth());
+					if (bLearnBakground) {
+						img.convertTo(accumulator, CV_32FC1);
+						startTime=ofGetElapsedTimef();
+						bLearnBakground=false;
+					}
+					cv::Mat im3;
+					img.convertTo(im3, CV_32FC1);
+					//printf("accumulator: %ix%i %i ch x %i bits\n",accumulator.size().width,accumulator.size().height,accumulator.channels(),accumulator.depth());
+					//printf("im3: %ix%i %i ch x %i bits\n",im3.size().width,im3.size().height,im3.channels(),im3.depth());
+					accumulateWeighted(im3, accumulator, max(1.0f/((ofGetElapsedTimef()-startTime)*30.0f),learningRate));
+					accumulator.convertTo(outmat,CV_8UC1);
+					grayBg=new IplImage(outmat);
+			}
+			grayDiff.absDiff(grayBg, grayImage);
+			grayDiff.threshold(threshold);
+			contourFinder.findContours(grayDiff, 20, (gw*gh)/3, 10, true);	// find holes
+		}
+		//generate events
+		for (int i = 0; i < contourFinder.nBlobs; i++){
+		    for (int j=0;j<boundaries.size();j++) {
+			if (boundaries[j].checkClick(contourFinder.blobs[i].centroid)) {
+			    //printf("playing %i: %s\n",boundaries[j].filename.c_str(),j);
+			}
+		    }
+		}
 	}
 
 }
@@ -92,21 +112,21 @@ void testApp::draw(){
     //ofBackground(0,0,0);
 	ofSetColor(255,255,255);
 	if (bGrab) {
-        switch(mode){
-            case COLOUR:
-                colorImg.draw(0,0,gw,gh); //(ofGetHeight()-gh)/2,gw,ofGetHeight()+((gh-ofGetHeight())/2));
-                break;
-            case GREY:
-                grayImage.draw(0,0,gw,gh); //(ofGetHeight()-gh)/2,gw,ofGetHeight()+((gh-ofGetHeight())/2));
-                break;
-            case DIFF:
-                grayDiff.draw(0,0,gw,gh); //(ofGetHeight()-gh)/2,gw,ofGetHeight()+((gh-ofGetHeight())/2));
-                break;
-        }
-	}
-
-	for (int i = 0; i < contourFinder.nBlobs; i++){
-		contourFinder.blobs[i].draw(0,0); //(ofGetHeight()-gh)/2);
+		switch(mode){
+		    case DISPLAY_FG:
+			grayImage.draw(0,0,gw,gh); //(ofGetHeight()-gh)/2,gw,ofGetHeight()+((gh-ofGetHeight())/2));
+			break;
+		    case DISPLAY_BG:
+			grayBg.draw(0,0,gw,gh); //(ofGetHeight()-gh)/2,gw,ofGetHeight()+((gh-ofGetHeight())/2));
+			break;
+		    case DISPLAY_DIFF:
+			grayDiff.draw(0,0,gw,gh); //(ofGetHeight()-gh)/2,gw,ofGetHeight()+((gh-ofGetHeight())/2));
+			break;
+		}
+		
+		for (int i = 0; i < contourFinder.nBlobs; i++){
+			contourFinder.blobs[i].draw(0,0); //(ofGetHeight()-gh)/2);
+		}
 	}
 
 	for (int i=0;i<boundaries.size();i++) {
@@ -135,10 +155,10 @@ void testApp::keyPressed(int key){
     //keys to play/stop (test)
     //overall sound level control
     //fine tune image detection
-
+	bool T=true;
 	switch (key){
 		case ' ':
-			bLearnBakground = true;
+			resetBG(T);
 			break;
 		case '+':
 			threshold ++;
@@ -150,9 +170,11 @@ void testApp::keyPressed(int key){
 			break;
 		case 'i':
 			bInvert=!bInvert;
+			resetBG(T);
 			break;
 		case 'f':
 			bFlip=!bFlip;
+			resetBG(T);
 			break;
 		case 's':
 			saveSettings("settings.xml");
@@ -188,10 +210,17 @@ void testApp::keyPressed(int key){
 		case '3':
 			mode=key-48;
 			break;
+		case '4':
+		case '5':
+			method=key-48;
+			bLearnBakground=true;
+			break;
 
 	}
 }
-
+void testApp::resetBG(bool &chg){
+	bLearnBakground = true;
+}
 void testApp::volumeChanged(float &v){
 	for (int i=0;i<boundaries.size();i++) boundaries[i].setVolume(v);
 }
@@ -207,23 +236,29 @@ void testApp::mouseMoved(int x, int y ){
 
 //--------------------------------------------------------------
 void testApp::mouseDragged(int x, int y, int button){
-
+    if (selectedPoint>-1) boundaries[selectedBoundary].points[selectedPoint]=ofPoint(x,y,0);
 }
 
 //--------------------------------------------------------------
 void testApp::mousePressed(int x, int y, int button){
+    ofPoint p=ofPoint(x,y,0);
     switch (button) {
         case 0:
-            boundaries[selectedBoundary].add(ofPoint(x,y,0));
+            selectedPoint=boundaries[selectedBoundary].findPoint(p);
+            if (selectedPoint<0) {
+                selectedPoint=boundaries[selectedBoundary].points.size();
+                boundaries[selectedBoundary].add(p);
+            }
+            else boundaries[selectedBoundary].points[selectedPoint]=p;
             break;
         case 1:
             for (int i=0;i<boundaries.size();i++) {
-                if (boundaries[i].checkClick(ofPoint(x,y,0))) printf("playing %i: %s\n",i,boundaries[i].filename.c_str());
+                if (boundaries[i].checkClick(p)) printf("playing %i: %s\n",i,boundaries[i].filename.c_str());
             }
             break;
         case 2:
             for (int i=0;i<boundaries.size();i++) {
-                if (boundaries[i].contains(ofPoint(x,y,0))) selectedBoundary=i;
+                if (boundaries[i].contains(p)) selectedBoundary=i;
             }
             break;
 	}
diff --git a/src/testApp.h b/src/testApp.h
index bea746c..c8db7f2 100755
--- a/src/testApp.h
+++ b/src/testApp.h
@@ -8,9 +8,12 @@
 #include "ofxFensterManager.h"
 #include "ofxGui.h"
 
-#define COLOUR 1
-#define GREY 2
-#define DIFF 3
+#define DISPLAY_FG 1
+#define DISPLAY_BG 2
+#define DISPLAY_DIFF 3
+
+#define METHOD_SIMPLE 4
+#define METHOD_ACCUM 5
 
 //12-10-12
 //each area will trigger 'once and once only' ?
@@ -20,6 +23,10 @@
 //tweak opencv stuff
 //test performance
 
+//size factor
+//continuous background
+//abs diff?
+
 
 class guiWindow;
 
@@ -49,16 +56,18 @@ class testApp : public ofxFensterListener{
 		ofVideoGrabber 		vidGrabber;
 
 		int gw,gh;
+		
+		float				learningRate,startTime;
 
-		ofxCvColorImage			colorImg;
-
+		cv::Mat accumulator,outmat;
+		ofxCvColorImage		colorImg;
 		ofxCvGrayscaleImage 	grayImage;
 		ofxCvGrayscaleImage 	grayBg;
 		ofxCvGrayscaleImage 	grayDiff;
 
 		ofxCvContourFinder 	contourFinder;
 
-		int 				mode;
+		int 				mode,method;
 
 		bool				bLearnBakground;
 		bool 				flip,invert;
@@ -80,11 +89,13 @@ class testApp : public ofxFensterListener{
         // ie:
         //     ofAddListener(addon.newIntEvent, this, &Class::method)
 		void volumeChanged(float &v);
+		void resetBG(bool &chg);
 
 		bool                		bGrab;
 
 		vector<boundary> boundaries;
 		int selectedBoundary;
+		int selectedPoint;
 
 		vector<ofPoint> clicks;
 };
-- 
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