convert pattern image to sinusoidal wave

What algorithm should be applied on above image to get that sinusoidal wave corresponding to that image?

Answer 1

[darova]

Convert image (rgb2gray) and sum rows

[Rajbir Singh]

it doesn't work

[darova]

Can you show what have you tried? And why it doesn't work?

Answer 2

[Varun Meeniga]

image=imread('sine_image.jpg');

si(1,:)=image(1,:); %stores int8 value of pixel along the horizontal direction

si=double(si); %double for easy calculations

fin_si=(si-128)/128; % changes 0 to 255 values to -128 to 127 further to -1 to 1

plot(fin_si);