How to get image matrix 2D using JavaScript / HTML5 -



How to get image matrix 2D using JavaScript / HTML5 -

are there solution of converting image 2d matrix using html5/js illustration

picture.jpg -------be converted -----> matrice[w][h] of pixels

as others have noted, can using canvas element. i'd post jsfiddle except technique works images hosted on same domain page (unless image cross-origin enabled)... , jsfiddle doesn't seem host suitable images utilize in example. here's code used test this:

// reference image want pixels of , dimensions var myimage = document.getelementbyid('theimagetoworkwith'); var w = myimage.width, h = myimage.height; // create canvas element var canvas = document.createelement('canvas'); // size canvas element canvas.width = w; canvas.height = h; // draw image onto canvas var ctx = canvas.getcontext('2d'); ctx.drawimage(myimage, 0, 0); // finally, image info // ('data' array of rgba pixel values each pixel) var info = ctx.getimagedata(0, 0, w, h);

read on canvas pixel manipulation details. might want verify canvas tag supported on browsers care about.

javascript html5 matrix image

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