**Negative Image**

**MATLAB**CODE:

%Here the I am subtracting 255 from R,G and B.

A=imread('person.jpg');

imshow(255-A);

Original Image |

Negative Image |

- Sine Wave

First find the mid point of the RGB image.

Convert the points from Cartesian to polar co_ordinates

Find the sine value for the angle 'theta'

Again convert the points to Cartesian co_ordinates

SAMPLE CODE:

x2=zeros([size(A,1) size(A,2)]);y2=zeros([size(A,1) size(A,2)]);for i=1:size(A,1)x=i-midx;for j=1:size(A,2)%Cartesian to Polar co-ordinates[theta1,rho1]=cart2pol(i,j-midy);phi=sin(theta1);%Polar to Cartesian co-ordinates[l,m]=pol2cart(phi,rho1);x2(i,j)=ceil(l)+midx;y2(i,j)=ceil(m)+midy;endend

Sine wave

Original Image |

## 1 comments:

You can add effects to your photos at http://www.addeffects.net without installed software

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