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51 Text { font.pointSize:25; text:"Processing pixels"; anchors.horizontalCenter:parent.horizontalCenter}
58 renderTarget:Canvas.FramebufferObject
60 property string image :"../contents/qt-logo.png"
61 Component.onCompleted:loadImage(image);
62 onImageLoaded:requestPaint();
65 var ctx = canvas.getContext('2d');
66 if (canvas.isImageLoaded(image)) {
67 var pixels = ctx.createImageData(image);
69 pixels.filter(Canvas.GrayScale);
70 //pixels.filter(Canvas.Threshold, 100); //default 127
71 //pixels.filter(Canvas.Blur, 20); //default 10
72 //pixels.filter(Canvas.Opaque);
73 //pixels.filter(Canvas.Invert);
74 //pixels.filter(Canvas.Convolute, [0,-1,0,
77 //ctx.putImageData(pixels, 0, 0, canvas.width, canvas.height);
78 ctx.putImageData(pixels, 0, 0);