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#include "ofMain.h" | |
#include "ofxCv.h" | |
const string path_0 = "prev.tif"; | |
const string path_1 = "cur.tif"; | |
class ofApp : public ofBaseApp | |
{ | |
ofVideoGrabber video; | |
ofxCv::FlowFarneback forward; | |
ofxCv::FlowFarneback backward; | |
ofImage prev, cur; | |
ofImage interpolate; | |
float amt = 0; | |
public: | |
void setup() | |
{ | |
ofSetFrameRate(60); | |
ofSetVerticalSync(true); | |
ofBackground(0); | |
prev.loadImage(path_0); | |
cur.loadImage(path_1); | |
ofxCv::imitate(interpolate, cur, CV_8UC3); | |
{ | |
forward.setPyramidScale(0.5); | |
forward.setNumLevels(3); | |
forward.setWindowSize(15); | |
forward.setNumIterations(3); | |
forward.setPolyN(5); | |
forward.setPolySigma(1.2); | |
} | |
} | |
int toIndex(int x, int y, int w, int ch) { return (y*w + x)*ch; } | |
void update() | |
{ | |
amt = ofMap(mouseX, 0, ofGetWidth(), 0, 1, true); | |
forward.calcOpticalFlow(prev, cur); | |
backward.calcOpticalFlow(cur, prev); | |
int w = interpolate.width, h = interpolate.height; | |
unsigned char* pix = interpolate.getPixels(); | |
unsigned char* prev_pix = prev.getPixels(); | |
unsigned char* cur_pix = cur.getPixels(); | |
for (int y=0; y<h; y++) { | |
for (int x=0; x<w; x++) { | |
const ofVec2f f = forward.getFlowOffset(x, y) * amt; | |
const int from_i = toIndex(x, y, w, 3); | |
const int to_i = toIndex(ofClamp(x+f.x, 0, w-1), ofClamp(y+f.y, 0, h-1), w, 3); | |
pix[from_i] = prev_pix[to_i]; | |
pix[from_i+1] = prev_pix[to_i+1]; | |
pix[from_i+2] = prev_pix[to_i+2]; | |
} | |
} | |
interpolate.update(); | |
} | |
void draw() | |
{ | |
prev.draw(0, 0); | |
backward.draw(); | |
ofTranslate(640, 0); | |
cur.draw(0, 0); | |
forward.draw(); | |
interpolate.draw(0, 480); | |
} | |
void keyPressed(int key) | |
{ | |
} | |
}; | |
//======================================================================== | |
int main( ) { | |
ofSetupOpenGL(1280,480*2,OF_WINDOW); | |
ofRunApp(new ofApp()); | |
} |
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