Blurring an image using a graphic processing unit
A method is provided for applying a blur to an image using a graphic processing unit (“GPU”). The method includes instructing the GPU to scale an image down from an original size; instructing the GPU to blur the scaled down image; and instructing the GPU to return the blurred image to the original size.
1 . A method for applying a blur to an image using a graphic processing unit, the method comprising:
instructing the graphic processing unit to scale the image down from an original size;
instructing the graphic processing unit to blur the scaled down image; and
instructing the graphic processing unit to return the blurred scaled down image to the original size.
2 . The method of claim 1 , wherein the scaling of the image down from the original size is performed by a vertex shader module.
3 . The method of claim 1 , wherein the blurring of the scaled down image is performed by a pixel shader module.
4 . The method of claim 1 , wherein the returning of the blurred scaled down image to the original size is performed by a vertex shader module.
5 . The method of claim 1 , wherein the blur is a Gaussian Blur.
6 . The method of claim 1 , wherein the blur is performed according to a predetermined radius.
7 . The method of claim 6 , wherein the predetermined radius is measured in pixels.
8 . The method of claim 1 further comprising:
presenting the blurred original size image to a user.
9 . A computer-readable medium having computer-executable instructions for performing the method recited in claim 1 .
10 . A method for applying a blur to an image using a graphic processing unit, the method comprising:
instructing the graphic processing unit to scale the image down from an original size;
instructing the graphic processing unit to blur the scaled down image, wherein the blur is performed according to a predetermined radius that is measured in pixels; and
instructing the graphic processing unit to return the blurred scaled down image to the original size.
11 . The method of claim 10 , wherein the scaling of the image down from the original size is performed by a vertex shader module.
12 . The method of claim 10 , wherein the blurring of the scaled down image is performed by a pixel shader module.
13 . The method of claim 10 , wherein the returning of the blurred scaled down image to the original size is performed by a vertex shader module.
14 . The method of claim 10 , wherein the blur is a Gaussian Blur.
15 . The method of claim 10 further comprising:
presenting the blurred original size image to a user.
16 . A computer-readable medium having computer-executable instructions for performing the method recited in claim 10 .
17 . A method for applying a Gaussian Blur to an image using a graphic processing unit, the method comprising:
instructing the graphic processing unit to scale the image down from an original size using a vertex shader module;
instructing the graphic processing unit to blur the scaled down image using a pixel shader module, wherein the blur is performed according to a predetermined radius that is measured in pixels;
instructing the graphic processing unit to return the blurred scaled down image to the original size using the vertex shader module; and
presenting the blurred original size image to a user.
18 . A computer-readable medium having computer-executable instructions for performing the method recited in claim 17.