MATLAB example code explaination needed

anyone can explain the matlab example code

CIR = multibandread('paris.lan', [512, 512, 7], 'uint8=>uint8',...
    128, 'bil', 'ieee-le', {'Band','Direct',[4 3 2]});

can anyone explain what is 'uint8=>uint8' , 'bil', 'ieee-le', ?

where can i get these data for sentinel-2 image?

Answer 1

[Hari]

Hi Sanjay,

Here is the explanation for important parts the code contains:

1. Understanding 'uint8=>uint8': This specifies the data type conversion. It means that the data is read as 'uint8' and stored as 'uint8'. This is useful when you want to ensure that the data type remains consistent during reading.
2. Understanding 'bil':This stands for "Band Interleaved by Line". It indicates the format of the data in the file. In BIL format, each line of the image contains pixel data for all the bands sequentially.
3. Understanding 'ieee-le':This refers to the byte ordering used in the file. 'ieee-le' stands for "IEEE Little Endian", which is a common format for storing binary data where the least significant byte is stored first.
4. Obtaining Sentinel-2 Data: You can refer to their webpage for details.
5. Using the "multibandread" Function:Once you have the data, use the "multibandread" function to read it. Ensure you specify the correct parameters based on the data format you have downloaded. For example, check the metadata to confirm the interleaving format and byte order.

Refer to the documentation of "multibandread" function to know more about the properties supported: https://www.mathworks.com/help/matlab/ref/multibandread.html

Hope this helps!