Fast way to map pixel values in a image to different values

4 次查看（过去 30 天）
Amandeep Gautam
Amandeep Gautam 2016-11-24
回答： Image Analyst 2016-11-24
I have a image (.tif) in which each pixel takes a value from numbers in keySet. I have to map them to a different value and following is what I did.
keySet = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 254, 255};
%converting to 1-based indexing and creating a map.
valueSet = {1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 4, 5};
tranformMap = containers.Map(keySet,valueSet);
image = readFile(filePath) %reads a .tif file.
for key = keys(tranformMap)
processedImage(image == key{1}) = tranformMap(key{1});
end
Although it works, I was wondering if there was a faster way to do it.

请先登录，再回答此问题。

回答（1 个）

Image Analyst
Image Analyst 2016-11-24
Yes there is. You can use the "intlut()" function.

类别

在 Help Center 和 File Exchange 中查找有关 Images 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by