How to use Mask the Source image in vision.AlphaBlender?
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SUSHIRDEEP NARAYANA
el 14 de Mzo. de 2015
Comentada: cui,xingxing
el 17 de Sept. de 2022
I tried using this as suggested in Mathworks help but its showing error. Halphablender=vision.AlphaBlender('MaskSource','Input port','Mask','BinaryMask','LocationSource', 'Input port'); Its displaying The MaskSource property is not relevant in this configuration of the System object. Can someone please help me with this problem
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Respuesta aceptada
Clive Fox
el 2 de Nov. de 2016
Editada: Walter Roberson
el 22 de Jun. de 2017
I had the same issue but MAthwork Tech gave the answer below:
Thank you for contacting MathWorks Technical Support.
The issue you are facing is because to use the variable 'mask', it has to be defined previously. Executing the following commands demonstrates the role of the mask parameter:
>> % load images
>> I1 = im2single(imread('blobs.png'));
>> I2 = im2single(imread('circles.png'));
>> % plot original images
>> figure
>> subplot(1,2,1);
>> imshow(I1);
>> subplot(1,2,2);
>> imshow(I2);
>> % full mask
>> halphablend = vision.AlphaBlender('Operation', 'Binary mask', 'MaskSource', 'Input port');
>> mask = ones(size(I2));
>> J1 = step(halphablend, I1, I2, mask);
>> % upper left corner of the mask is set to 0s
>> mask(1:end/2,1:end/2) = 0;
>> J2 = step(halphablend, I1, I2, mask);
>> % plot
>> figure;
>> imshow(J1);
>> figure;
>> imshow(J2);
2 comentarios
cui,xingxing
el 17 de Sept. de 2022
The above example program should be integrated into the official documentation, however the official documentation for the vision.AlphaBlender function example is too sketchy and should be replaced.
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Muhammad Danish
el 8 de En. de 2019
Still showing error known as
Error using AlphaBlender/step
The Mask input must be a vector or a matrix.
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