How to perform an operation after reading the image?

Question

John 2024-2-23

回答： Walter Roberson 2024-2-23

In imageDatastore, when defining the readFcn=readimageFcn, it can be defined as readimageFcn=@(x) int16(dicomread(x));

How to define this function to perform a normalization afrer reading the image?

This will not work:

readimageFcn=@(x) [int16(dicomread(x)); imagenorm(x)];

And a separate function is not working either:

function y=readimageFcn(x)
y=dicomread(x));
y=imagenorm(y);
end

How to make an image reading function in the following command?

datastoreone = imageDatastore(imagefiles,FileExtensions=exts,ReadFcn=readFcn);

Thank you!

Answer 1

Walter Roberson 2024-2-23

readimageFcn=@(x) imagenorm(int16(dicomread(x)));

There is some uncertainty here, as imagenorm() is not a defined Mathworks function, so we do not know what datatype it expects.