roifilt2

roifilt2 supports the generation of C code (requires MATLAB^® Coder™). Note that if you choose the generic MATLAB Host Computer target platform, roifilt2 generates code that uses a precompiled, platform-specific shared library. Use of a shared library preserves performance optimizations but limits the target platforms for which code can be generated. For more information, see Types of Code Generation Support in Image Processing Toolbox.

If you generate code using the coder function with fun as an argument, then specify fun as a constant string or character vector. For example, to use the adaptthresh function, specify fun as the string "adaptthresh" and convert the string to a constant using the coder.Constant function.

codegen roifilt2 -args {I,BW,coder.Constant("adaptthresh")}

If you generate code for a wrapper function, then fun can be a function handle within the wrapper function. For example, this command generates code for a wrapper function named myFunction.

codegen myFunction -args {I,BW,coder.Constant("adaptthresh")}

Here is a sample definition for the wrapper function myFunction that includes a call to the roifilt2 function. Within the wrapper function, convert fun from a constant string to a function handle using the str2func function.

function out = myFunction(I,BW,fun) %#codegen
      fun1 = str2func(fun); % This will become fun1 = @adaptthresh
      out = roifilt2(I,BW,fun1);
end