How to reveal part of blurred image where mouse is hovered?

Question

How to reveal part(small portion) of blurred image where mouse is hovered??Currently it blurs whole image but I want the part of the blurred image where the mouse i

Answer 1

I just want to post an alternative solution. It doesn't have great browser support as it is built on SVG images, masks and filters. I have tested and it works in Chrome 33, Safari 6.1.1 and Firefox 25.0.1.

Let me know what you think: jsFiddle

New version with inverted mask for blurred image jsFiddle

HTML + SVG

CSS

body {
    margin: 0;
}
.pic {
    text-align: center;
    position: relative;
    height: 250px;
}
.blur {
    height: 100%;
}
.overlay {
    position: absolute;
    top: 0px;
    left: 0px;
    height: 100%;
}

JavaScript

$('.pic').mousemove(function (event) {
    event.preventDefault();
    var upX = event.clientX;
    var upY = event.clientY;
    var mask = $('#mask1 circle')[0];
    mask.setAttribute("cy", (upY - 5) + 'px');
    mask.setAttribute("cx", upX + 'px');
});