how to convert the binarized image to the original gray image

Question

Khaing Zin Htwe 2016-5-20

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/285221-how-to-convert-the-binarized-image-to-the-original-gray-image

评论： Emerson Nithiyaraj 2019-5-20

Dear all, Hello good morning,

Could you please share your experience how to convert the binarized image to the original image with gray vlaues? THank all.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2016-5-21

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/285221-how-to-convert-the-binarized-image-to-the-original-gray-image#answer_222945

在 MATLAB Online 中打开

You probably want

maskedImage = binaryImage .* originalImage;

3 个评论
显示 1更早的评论隐藏 1更早的评论

Image Analyst 2016-5-22

在 MATLAB Online 中打开

For the future, this operation is called "masking", not "converting" of a binary image to a gray scale image. If original image is an integer, you need to cast binary image to the same class of integer, like

maskedImage = uint8(binaryImage) .* originalImage;

Or initialize and then use the binary image as indexes:

maskedImage = originalImage; % Initialize
maskedImage(~binaryImage) = 0; % Mask

Emerson Nithiyaraj 2019-5-20

thank you..This works for me

请先登录，再进行评论。

Answer 2

Image Analyst 2016-5-21

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/285221-how-to-convert-the-binarized-image-to-the-original-gray-image#answer_222941

在 MATLAB Online 中打开

Try this:

binaryImage = grayImage;

Your (formerly) binary image will now be converted into the same array as your gray scale image, so it's now a gray scale image, not a binary image anymore.