padarray for resizing canvas of images

Hi,

I have multiply PNG images in one folder with different images sizes (height and width), how can I use the padarray function so they will have the same canvas size (according to the bigger image) without resizing them?

Thanks a lot

Answer 1

[Image Analyst]

Not hard. Just get the sizes of both, get the max, and figure out what to pass to padarray()

[rows1, columns1, numberOfColorChannels1] = size(image1);
[rows2, columns2, numberOfColorChannels2] = size(image2);
maxRows = max(rows1, rows2);
maxColumns = max(columns1, columns2);

and so on...

[dan kin]

Thanks.

Why in the code rows3 and columns3 do not match rows2 and columns2?

Code:

clc;
clear;

img=imread('pears.png');
[rows1, columns1, numberOfColorChannels1] = size(img);
rows2=1000; 
columns2=2000;

imgpad = padarray(img,[rows2 columns2],'both');
imshow(imgpad);
[rows3, columns3, numberOfColorChannels1] = size(imgpad);

[Image Analyst]

Because that's not the way to use padarray. Read the instructions. The inputs are the number of rows you want to add, not the overall total rows.