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convert to grayscale image

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Saurabh Sakpal
Saurabh Sakpal 2016-4-5
评论： Star Strider 2016-4-5
Hi,
I need a grayscale image to input into a function I want to create mesh on, problem is the image i have at the moment is a niftii (used in mri machines), how do i convert it into a grayscale? It (niftii) image is a matrix essentially with values [0 1] range, i believe you need [0 255] for grayscale. Any help to convert this to grayscale?
Thank You
  2 个评论
Muhammad Usman Saleem
Muhammad Usman Saleem 2016-4-5
According to my understanding.
You have binary image and you want to convert it to gray scale.
It may deal us to resampling of 2 bit image to 8 bit image?
Kuifeng
Kuifeng 2016-4-5
do yo have an example matrix to show here?

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回答（2 个）

Star Strider
Star Strider 2016-4-5
If the range is [0,1] it is most likely continuous, not binary. See if:
grayImage = uint8(niftii_image*255);
does what you want.
  1 个评论
Star Strider
Star Strider 2016-4-5
‘... values are between 0 to 1 in that matrix, so it can be 0.5 0.6 etc. Anything in between.’
My code should do what you want.

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Saurabh Sakpal
Saurabh Sakpal 2016-4-5
Hi original poster again, Sorry values are between 0 to 1 in that matrix, so it can be 0.5 0.6 etc. Anything in between

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