2-D Convolution of two images

I need to convolve two jpg images by using conv2 command but it's not working . Images are attached.

I am new to this field.

Plz help me

[Guillaume]

• No images are attached
• In what way is it not working? Do you get an error? Or a different result than you expect (in which case what did you expect?)?
• What exact code did you use. It's going to be difficult to tell you what's wrong if you don't tell us.

conv2 is indeed the function you'd use for 2d convolution.

[Taimoor Zafar]

[Taimoor Zafar]

This is my required work to convolve letter E with small square, Circle and Large square and by doing this I have to draw their 3D plots. I don't know how to start this. I used conv2 command but its not working directly.

Answer 1

[Image Analyst]

Two points you may have overlooked.

1. You need to do it on monochrome images, not color. So extract the color channels and do it one color channel at a time.
2. You need to cast the uint8 to double before you pass the array into conv2.

[Taimoor Zafar]

[Taimoor Zafar]

I need to do the above task through convolution. It would be helpful to me if you teach me how to start writing this code. It looks very difficult for me. Plz help me

[Image Analyst]

windowSize = 9;
kernel = ones(windowSize)/windowSize^2;
blurredImage = conv2(double(grayImage), kernel, 'same');
surf(blurredImage);
colormap(gray(256));