Better picture for inexpensive cameras
View Patent ↗A method for correcting a radial distortion in an image includes receiving a radial distortion parameter from the user and calculating new intensity values of points in the image to correct a radial exposure distortion in the image.
1. A method for correcting a radial exposure distortion in an image, comprising:
calculating new intensity values of points in the image with the following equation:
I ′( x,y )= I ( x,y ) 1+k(x 2 +y 2 ) ,
where I′(x,y) is an intensity value of a point in the image with radial exposure, I(x,y) is an intensity value of the point without radial exposure, (x,y) are the coordinates of the point, and k is a radial distortion parameter.
2. The method of claim 1 , further comprising receiving the radial distortion parameter from a user.
3. The method of claim 1 , further comprising displaying the image with the new intensity values.
4. The method of claim 3 , further comprising saving the image with the new intensity values.
5. The method of claim 4 , wherein said saving occurs after a user approves the image with the new intensity values.
6. The method of claim 5 , further comprising, prior to said calculating, capturing the image.
7. The method of claim 6 , further comprising receiving the radial distortion parameter from the user.