Image Segmentation to obtain smallest particle

1 次查看（过去 30 天）
Tinna Armasamy
Tinna Armasamy 2017-6-5
评论： Tinna Armasamy 2017-6-5
How do I do segmentation to obtain smallest particle from a soil image?? I have used the following coding but its not giving accurate result. Please help. Thank you.
soil=imread('Example Image');
soil=rgb2gray(soil);
I_eq=adapthisteq(soil);
bw=im2bw(I_eq,graythresh(I_eq));
bw2=imfill(bw,'holes');
bw3=imopen(bw2,ones(5,5));
bw4=bwareaopen(bw3,40);
bw4_perim=bwperim(bw4);
mask_em=imextendedmax(I_eq,30);
I_eq_c=imcomplement(I_eq);
I_mod=imimposemin(I_eq_c,~bw4|mask_em);
L=watershed(I_mod);
cc = bwconncomp(L,8);
n= cc.NumObjects;

请先登录，再回答此问题。

回答（1 个）

Walter Roberson
Walter Roberson 2017-6-5
That is a JPEG image. The smallest particle will probably be a single pixel, and you will have a heck of a time figuring out what is going wrong in your algorithm.
The short summary: never try to do scientific analysis on JPEG images -- not unless what you are trying to analyze is the operation of the JPEG algorithm itself.
  3 个评论
显示 1更早的评论
Walter Roberson
Walter Roberson 2017-6-5
PNG or TIFF or BMP or DICOM.
I am fond of TIFF format; Image Analyst tends to favor PNG.
If you need to store multiple related images together, such as hyperspectral images, then TIFF or DICOM are designed for that, and PNG can be made to work for that, but not the other image formats.
Tinna Armasamy
Tinna Armasamy 2017-6-5
I have tried in TIFF format, but still obtaining similar result. Is there any suggestion whether I have error in my coding itself or any other option I can try in Matlab?

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Convert Image Type 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