how to split satellite image with coordinates and how to increase matrix dimension to 720x360

have a raster image of world bit not include antartica portion ,need to split the raster to stack with GRACE img and nee to increase the size of raster as same as grace 720x360

[Jan]

The description is lean yet. Please post, what you have tried so far and ask a specific question concerning Matlab.

Answer 1

[Siraj]

Hii! It is my understanding that you want to read a rafter image, split that image, and resize it.

To read the image you can use “imread” or “readgeoraster” depending on the file that you want to read. You can learn more about these functions by following the links below.

https://in.mathworks.com/help/matlab/ref/imread.html

https://in.mathworks.com/help/map/ref/readgeoraster.html

Now there are multiple ways of splitting an image, since the image will be stored as an array, so you can simply use array indexing to extract the different regions of interest, or you can refer to the following link to better understand different ways of splitting an image.

https://in.mathworks.com/matlabcentral/answers/46699-how-to-segment-divide-an-image-into-4-equal-halves

Now to resize the image you can use the “imresize” function. Refer to the documentation below to learn more about the function.

https://in.mathworks.com/help/matlab/ref/imresize.html

Hope this helps