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Why does my image does not conert to grayscale?

조회 수: 21 (최근 30일)
Andrew Killian
Andrew Killian 2021년 8월 31일
댓글: Image Analyst 2021년 9월 5일
I need to convert an image that we were given to grayscale.
I wrote the code below. When I highlight the whole 'imagesc' line and 'evaluate selction' the image pops up but in color.
logo = imread('..._logo.jpg');
figure;
imagesc(logo);
colormap gray;

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Image Analyst
Image Analyst 2021년 8월 31일
Use imshow() because imagesc() applies some funky colormap by default, and that is usually not what you want.
  댓글 수: 3
Image Analyst
Image Analyst 2021년 8월 31일
No, you don't need that last line. The default for gray scale images is to not use a colormap and show everything in it's original, native gray color.
Image Analyst
Image Analyst 2021년 9월 5일
Andrew, if this solved it, can you click the "Accept this answer" link? Thanks in advance.

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