How to convert a multipage tif image in RGB into Grayscale

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zy 2014-6-26

评论： zy 2014-6-26

Hi, I have a multipage tif image in RGB mode obtained from a video. Since the video is recorded in RGB mode,

I need to convert this multipage tif image from RGB into Grayscale. Can anyone help me ?

Thank you very much.

Ben11 2014-6-26

So you have one single RGB image? If so you can use

rgb2gray(Image)

to get the grayscale. Otherwise you can access individual channels with (:,:,Channel), which will be grayscale. Is that it?

Ben11 2014-6-26

Oh so am I. What if you open the image with ImageJ? What type of image does it say it is? Can you convert it to RGB color for instance?

zy 2014-6-26

I opened the image using Image J. The information obtained by 'showinfor' indicates that it is "Bits per pixel: 8 (grayscale LUT)"

But the camera itself is 12 bit when taking the video.

Image Analyst 2014-6-26

What output format do you want? An avi file (movie file)? I've not dealt with multipage tiff images before - is that what your video camera gave you?

Image Analyst 2014-6-26

Do you want single frames (one image per one TIFF file)? Or a multi-page TIFF (multiple images in a single TIFF file)?

zy 2014-6-26

Yes, I know that I can get either single frame out of the video or multipage out of that video.

For me, either choice will be ok.

For multipage image file, I can load all frames of the image, and then average the intensity information over the number of frames.

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