c++ - inVideoPlayer中没有名为idleMovie的成员

任何C++专家都可以告诉我为什么出现以下错误

我试过几次重新创建头文件。

header 是否有问题？

inVideoPlayer中没有名为idleMovie的成员

void testApp::setup(){

    // setup video dimensions
    videoWidth = 320;
    videoHeight = 240;

    outputWidth = 320;
    outputHeight = 240;

    // masked image ofTexture
    maskedImg.allocate(outputWidth,outputHeight,GL_RGBA);

    // videograbber init
    vidGrabber.setVerbose(true);
    vidGrabber.initGrabber(videoWidth,videoHeight);

    // background quicktime
    vidPlayer.loadMovie("gracht5000.mov");
    vidPlayer.play();

    // video source
    colorImg.allocate(outputWidth,outputHeight);

    // grayscale source
    grayImage.allocate(outputWidth,outputHeight);
    // static difference image
    grayBg.allocate(outputWidth,outputHeight);
    // difference (mask) between grayscale source and static image
    grayDiff.allocate(outputWidth,outputHeight);

    bLearnBakground = true;
    threshold = 80;
}

//--------------------------------------------------------------
void testApp::update()
{
    ofBackground(100,100,100);
    bool bNewFrame = false;
    vidPlayer.idleMovie();
    vidGrabber.grabFrame();
    bNewFrame = vidGrabber.isFrameNew();

    if (bNewFrame)
    {
        colorImg.setFromPixels(vidGrabber.getPixels(), outputWidth,outputHeight);
        grayImage = colorImg;

        // learn new background image
        if (bLearnBakground == true){
            grayBg = grayImage; // the = sign copys the pixels from grayImage into grayBg (operator overloading)
            bLearnBakground = false;
        }

        // take the abs value of the difference between background and incoming and then threshold:
        grayDiff.absDiff(grayBg, grayImage);
        grayDiff.threshold(threshold);
        grayDiff.blur( 3 );

        // pixels array of the mask
        unsigned char * maskPixels = grayDiff.getPixels();

        // pixel array of webcam video
        unsigned char * colorPixels = colorImg.getPixels();

        // numpixels in mask
        int numPixels = outputWidth * outputHeight;

        // masked video image (RGBA) (final result)
        unsigned char * maskedPixels = new unsigned char[outputWidth*outputHeight*4];

        // loop the mask
        for(int i = 0; i < numPixels; i+=1 )
        {
            int basePixelRGBA = 4 * i;
            int basePixelRGB = 3 * i;

            // compose final result
            maskedPixels[ basePixelRGBA + 0 ] = colorPixels[basePixelRGB]; // take pixels from webcam source
            maskedPixels[ basePixelRGBA + 1 ] = colorPixels[basePixelRGB+1]; // take pixels from webcam source
            maskedPixels[ basePixelRGBA + 2 ] = colorPixels[basePixelRGB+2]; // take pixels from webcam source
            maskedPixels[ basePixelRGBA + 3 ] = maskPixels[i]; // alpha channel from mask pixel array
        }

        // load final image into texture
        maskedImg.loadData(maskedPixels, outputWidth,outputHeight, GL_RGBA );

    }



}

//--------------------------------------------------------------
void testApp::draw(){

    ofSetColor(0xffffff);

    // draw bg video
    vidPlayer.draw(0,0);

    // draw masked webcam feed
    ofEnableAlphaBlending();
    maskedImg.draw(20,20);
    ofDisableAlphaBlending();

    // info
    ofSetColor(0xffffff);
    char reportStr[1024];
    sprintf(reportStr, "bg subtraction and blob detection\npress ' ' to capture bg\nthreshold %i (press: +/-)\n, fps: %f", threshold, ofGetFrameRate());
    ofDrawBitmapString(reportStr, 20, 600);

}

标题

#pragma once

#include "ofMain.h"
#include "ofxOpenCv.h"

class ofApp : public ofBaseApp{

    public:
        void setup();
        void update();
        void draw();
        void keyPressed(int key);
        void keyReleased(int key);
        void mouseMoved(int x, int y );
        void mouseDragged(int x, int y, int button);
        void mousePressed(int x, int y, int button);
        void mouseReleased(int x, int y, int button);
        void windowResized(int w, int h);
        void dragEvent(ofDragInfo dragInfo);
        void gotMessage(ofMessage msg);
        int videoWidth;
        int videoHeight;
        int outputWidth;
        int outputHeight;
        int threshold;
        ofVideoGrabber vidGrabber;
        ofVideoPlayer vidPlayer;

        ofxCvColorImage colorImg;
        ofxCvGrayscaleImage grayImage;
        ofxCvGrayscaleImage grayBg;
        ofxCvGrayscaleImage grayDiff;
        ofTexture maskedImg;
        bool bLearnBakground;



 };

最佳答案

vidPlayer.idleMovie();替换为vidPlayer.update();
和vidGrabber.grabFrame();替换为vidGrabber.update();