cvResize函數與JavaCV

Question

說我在這裏使用了錯誤的類型。 img和圖像都是iplImages，我應該使用哪種類型，以及如何使用它？由於

    IplImage image = IplImage.create(120, 120, IPL_DEPTH_8U, 4); 
        //resize the image 
        cvResize(img,image); 

        cvSaveImage("4-rjb" + capture + ".pgm", img); 

Answer 1

你應該使用相同數量的通道作爲源圖像中

Answer 2

更換img.nChannels）IPL_DEPTH_8U參數（

Answer 3

這應該工作

IplImage resizeImage = IplImage.create(120, 120, origImg.depth(), origImg.nChannels()); 

和這裏是一個完整的例子

OpenCVFrameGrabber frameGrabber = new OpenCVFrameGrabber(video_in); 
try { 
    frameGrabber.start(); 
    IplImage origImg = frameGrabber.grab(); 
    IplImage resizedImage = IplImage.create(IMG_WIDTH, IMG_HEIGHT, origImg.depth(), origImg.nChannels()); 

    //cvSmooth(origImg, origImg); 
    cvResize(origImg, resizedImage); 
    cvSaveImage(image_out.getAbsolutePath(),resizedImage); 
    cvReleaseImage(resizedImage); 

} catch (OpenCVFrameGrabber.Exception e) { 
    e.printStackTrace(); 
    throw new NullPointerException("fileExtension"); 
}