[Tutor] how to read and transmit/send only section of the image (sub-image)

[Jojo Mwebaze]

Hello Tutor

I am writing Class to provide data transfer between the server and client
processes based on simple HTTP GET/POST operations. However my interest is a
sub-image (section of a full image). i am requesting help on how to read and
transmit/send only section of the image (sub-image). i also prefer read the
bytes (of the subimage) off the disk, without opening the file into memory!

The images i work with are of type FITS.

Kind Regards

Jojo
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