Merging 10 tif files into one in order to get spectral signatures

Hi to everyone!

Im working with 10 reflectance maps processed on Pix4D, they have TIF format. I want to see the spectral signature of some pixels and for that I need to merge the 10 bands. How can I do this? Is this the way to proceed?

Thank you!!!

Answer 1

[Raunak Gupta]

Hi Melisa,

You can read the TIFF files one by one and assign them to a matrix in the 3rd dimension. Since you want to merge the 10 images in band wise fashion, I am assuming the Height and width of every TIF image is same otherwise assigning to a matrix will not work. Below example code might be helpful. Here I assume each TIFF file contains only one channel. You may change accordingly if it contains more channels.

img1 = imread('tif_image1.tif'); 
[Height,Width] = size(img1,[1,2]); 
numberOfBands = 10; 
fullImage = zeros(Height,Width,numberOfBands); 
% Assuming filename is calculated using dir and fullfile  
for i=1:numberOfBands 
    img = imread('filename_i.tif'); 
    fullImage(:,:,i) = img(:,:,1); 
end 

[Melisa Isgro]

thank you for your answer! can you tell me how to use dir and fullfile?

[Raunak Gupta]

Hi Melisa,

This answer will help using the dir and fullfile for reading and getting the name of the file.

Here F is the 'filename_i.tif' that I mentioned in the answer.

Hope this clarifies.