What do i get when i do c = imread('image.jpeg')

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Muthuraj V
Muthuraj V on 24 Oct 2011
Hi All,
when we do R= imread('someimage.jpeg')
what will be there in R..?? is it coefficients or intensity values...
can c\some one clarify this..?
Thank you, Raj.

Answers (1)

Walter Roberson
Walter Roberson on 24 Oct 2011
For JPEG files, it will be RGB values.
imread() fully decodes the images it reads, and outputs an indexed image if the image was stored as an indexed image, and outputs an RGB image if the image was stored as an RGB image. JPEG images are always stored as RGB images.
  3 Comments
Image Analyst
Image Analyst on 24 Oct 2011
Coefficients? Of what? They're intensity values of course.
Walter Roberson
Walter Roberson on 24 Oct 2011
Muthuraj, if your question is, "Can imread() be used to retrieve the DCT coefficients of a JPEG image", then the answer is NO.

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