清空筛选条件
清空筛选条件

how to get binary image from histogram?

2 次查看（过去 30 天）
Ibrahim Thorig
Ibrahim Thorig 2014-3-13
评论： Image Analyst 2014-3-14
I'm new to matlab. Some on please help me to obtain binary segmentation form histogram.
thank you

请先登录，再回答此问题。

回答（1 个）

Image Analyst
Image Analyst 2014-3-13
You pick a threshold and then do
binaryImage = grayImage < thresholdValue;
if you want any more advice, post an image and say what you want to find or measure. The threshold can be chosen form the histogram, for example from my interactive thresholding application: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
  4 个评论
显示 2更早的评论
Ibrahim Thorig
Ibrahim Thorig 2014-3-14
sorry its histogram, initially generate histogram of the image, then remove background, so the only white area (image) should show.
Image Analyst
Image Analyst 2014-3-14
[pixelCounts, grayLevels] = imhist(grayImage, 256);
binaryImage = grayImage < 128;
Do the above thresholding for each color channel and then AND the 3 binary images to get the overall binary image for the color image.

请先登录，再进行评论。

类别

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

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by