Trying to figure out why this isn't noticing the differences between the current frame and the previous. It seems like the assignment on line 36 isn't doing its job properly.

gistfile1.cpp

void testApp::setSequences(){
    int pixelThreshold = 20; //percent similarity each individual pixel needs to pass
    int imgPercentNeededToPass = 80; //percent of pixels that must pass threshold test
    int checkEveryIncrement = 10; //number of pixels before next pixel comparison
    int maxPixDiffToPass = (pixelThreshold*255)/100; //converts percent to a max pixel change value

    vector<long> cutFrames; 
    myVideo.setFrame(1);
    ofPixelsRef prevPixelsRef = myVideo.getPixelsRef();
    
    for(int i = 2; i<myVideo.getTotalNumFrames(); i++){
        int numThatPass = 0; //holds number of pixels that pass
        myVideo.setFrame(i); // start at first frame
        myVideo.draw(0,0);
        //cout<<"is the frame new: "<<ofToString(myVideo.isFrameNew())<<endl;
        ofPixelsRef pixelsRef = myVideo.getPixelsRef();
       
        //loop through each pixel in the image
        for(int j = 0; j < myVideo.getWidth(); j += checkEveryIncrement){
            for(int k = 0; k < myVideo.getHeight(); k += checkEveryIncrement){
                float prevLightness = prevPixelsRef.getColor(j,k).getLightness();
                float lightness = pixelsRef.getColor(j,k).getLightness();
                //cout<<"the lightness is "<<lightness<<" and the previous lightness is "<<prevLightness<<endl;
                if(abs(prevLightness-lightness) <= maxPixDiffToPass){
                    numThatPass++;
                }
                if(prevLightness != lightness) cout<<"there is a differance"<<endl;
            }
        }
        //cout<<"the first pixel of frame "<<ofToString(i)<<" is "<<ofToString(pixelsRef.getColor(1,1).getLightness())<<endl;
        if(numThatPass/myVideo.getWidth()*myVideo.getHeight() >= imgPercentNeededToPass/100){
            //if enough pixels passed
            cutFrames.push_back(i);
            //cout<<"found a cut!"<<endl;
        }
        prevPixelsRef = pixelsRef;
        
    }//go to next frame
    
    cout<<"there are "+ofToString(cutFrames.size())<<" cuts in this movie"<<endl;
}

Basically its registering both pixelsRef and prevPixelsRef as a reference to the same thing.