Undefined function 'datatype' for input arguments of type 'uint8'.

Question

Raviteja Kurva 2019-1-29

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/442095-undefined-function-datatype-for-input-arguments-of-type-uint8

回答： Guillaume 2019-1-29

% addpath(genpath('\\mars\usr\FA8_Mikroskopie\FA8_public\PublicFiles\MATLAB\Toolboxes\Restricted\2011-08-10-FAIR'))
addpath(genpath('W:\MATLAB\Toolboxes\Registration\2011-08-10-FAIR'));
%cd C:\Program Files\MATLAB\R2018b\toolbox\DIPimage 2.9
a=imread('objphase.jpg');
b=imread('calphase.jpg');
c=b-91;
c(c<0)=0;
c(1:end,:)=c(end:-1:1,:);  % flip the image
cat(3,a,c)
d=extract(resample(rotation(c,45.5*pi/180),[0.8437 0.8437],[-13 5]),size(b)/2);
e=extract(a,size(b)/2);
cat(3,e,d)  % This is a pretty good pre alignment. So now FAIR can do the rest...
useCuda=0;
if (useCuda)
    e=cuda(e);
    d=cuda(d);
    enableCuda();
    %set_zeros_cuda(1);
    %set_ones_cuda(1);
    %global zeros; zeros=@(varargin) zeros_cuda(varargin{:});
    %set_rand_cuda(1);
end
tic
[aligned,mytransform]=MultiLevelAlign(e,d);  % ist superlangsam auf meinem Laptop aber was solls....
toc
% mytransform  = [    0.9975    0.0013    0.6298   -0.0006    1.0032   -0.1691]';  % This is the result of the aligment
% [aligned2]=MultiLevelAlign(e,d,mytransform);  % just do the transform
cat(3,d,aligned)  % ... perfect
[aligned2,mytransform2]=MultiLevelAlign(e,d,mytransform);  % use the same transformation but just apply it
cat(3,d,aligned2)  % ... perfect. Also works

Hi

I am very new to programimg so please help me out

While running this i got a error

Undefined function 'datatype' for input arguments of type 'uint8'.

Error in extract (line 54)

out=newim(asize,datatype(img)); % problems with type conversion: +value;

Error in alignRainer (line 13)

e=extract(a,size(b)/2);

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Answer 1

Guillaume 2019-1-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/442095-undefined-function-datatype-for-input-arguments-of-type-uint8#answer_358545

It looks like together with your extract function you should have a datatype function. That function is missing. It's for you to find out why.

The other possibility is that extract expects an object of a special class (who would have a datatype method), not a simple image array. You would have to check the documentation of extract.

datatype is not a matlab function, so it has to come from somewhere else.