Dear all,
Please, can anybody tell me, how to do a binarization of this image?
Step by step please, I´m new in this section.
Thank you for your answers.

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Image Analyst
Image Analyst 2016년 9월 9일

0 개 추천

You can threshold, like
grayImage = rgb2gray(yourRGBImage);
binaryImage = grayImage > someThresholdValue;
imshow(binaryImage);

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Still I have this error:
Error using rgb2gray>parse_inputs (line 81)
MAP must be a m x 3 array.
Error in rgb2gray (line 35)
X = parse_inputs(varargin{:});
Error in binarizaceopetazase (line 3)
grayImage = rgb2gray('thorax-mdl.jpg');
You need to pass it a numerical array, not a character array (the filename string). imshow() can work like that but not rgb2gray. Try
grayImage = imread('thorax-mdl.jpg');
% Get the dimensions of the image.
% numberOfColorBands should be = 1.
[rows, columns, numberOfColorChannels] = size(grayImage);
if numberOfColorChannels > 1
% It's not really gray scale like we expected - it's color.
% Convert it to gray scale by taking only the green channel.
grayImage = grayImage(:, :, 2); % Take green channel.
end
Veronika
Veronika 2016년 9월 10일
Finally, it´s working.
Thank you.

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추가 답변 (1개)

George
George 2016년 9월 8일

0 개 추천

Take a look at this example and im2bw.

댓글 수: 3

Thanky you for link.
I tried this, but this part of code doesn´t work.
I3 = imadjust(I2);
imshow(I3);
It always appears this type of error.
Error using imadjust>parseInputs (line 207)
Specified syntax IMADJUST(I) is only supported for 2-D grayscale images. Additional input arguments are required for use
with RGB images.
Error in imadjust (line 97)
parseInputs(varargin{:});
Error in binarizace_image_dalsi_pokus (line 14)
I3 = imadjust(I2);
What is wrong? Thank you for your answer.
George
George 2016년 9월 8일
It's saying that your image isn't grayscale. Take a look at this example.
Image Analyst
Image Analyst 2016년 9월 9일
Then why did you accept the answer if it's not working?

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도움말 센터File Exchange에서 Image Processing Toolbox에 대해 자세히 알아보기

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2016년 9월 8일

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