Could you help me fix the problem

[akafen]

Error using edgetaper Expected input number 2, PSF, to be nonzero.

Error in edgetaper>parse_inputs (line 128) validateattributes(PSF,{'uint8','uint16','int16','double','single'},...

Error in edgetaper (line 34) [I, PSF, sizeI, classI, sizePSF, numNSdim] = parse_inputs(varargin{:});

Error in Demo_deblur_real_application (line 76) y = edgetaper(y,k);

[cszn]

Check whether k is a valid kernel.

[akafen]

I just run the demo,but it could not work,the problem is what I said

[cszn]

Pay attention to "Expected input number 2, PSF, to be nonzero."

[pingfansong]

PSF is required not to contain zero elements by the function validateattributes(PSF,{'uint8','uint16','int16','double','single'},...

So, you need to check PSF to make sure it does not contain zeros.