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I have a project concerning a grayscale picture

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Tiisetso on 3 May 2016
Closed: MATLAB Answer Bot on 20 Aug 2021
here's the question about the attached picture:
''Consider the image below. Discuss thoroughly what is wrong with this image. Then make some plans to address these mistakes/problems''

Answers (2)

Walter Roberson
Walter Roberson on 4 May 2016
The answer is that the mistake was in creating a JPEG lossy image. JPEG effectively does a kind of anti-aliasing that makes image analysis difficult. The cure is to go back and re-take the picture using a lossless image format.
Walter Roberson
Walter Roberson on 4 May 2016
Here then:
filename = 'twoguys.jpg';
[~,~,ext] = fileparts(filename);
if ismember(lower(ext), {'jpg', 'jpeg'})
error('Go back and retake the picture using a lossless compression like TIFF or RAW');

CS Researcher
CS Researcher on 4 May 2016
The image has the salt and pepper noise. You can remove it using medfilt2 (Image Processing Toolbox)

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