scaled Otsu Binarization or Normalized?
显示 更早的评论
I have binarized an image using graythresh, I want to know by using graythresh, dividing and multiplying the original values by maximum values, is this binarization method called scaled or normalized Otsu.
im = imread('flower.jpg');
max_level = double(max(im(:)));
min_level = double(min(im(:)));
lev = graythresh(double(im)/max_level) * max_level;
bw = (im>=lev);
采纳的回答
Guillaume
2015-11-25
1 个投票
By dividing your original image by the max, you're just normalising the image to the range [0 1]. This has nothing to do with Otsu's method.
That you then scale the level returned by graythresh to the range of your image is normal procedure. This is just plain Otsu thresholding.
So what you've done is threshold a normalised image using Otsu's method. There's no special name for this.
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Image Type Conversion 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
