How to display only red parts of an image?

16 次查看（过去 30 天）
Harshan Desu
Harshan Desu 2020-4-8
评论： Harshan Desu 2020-4-16
The Image above is an output from using the savitky_golay_filter made by Image Analyst. I am working on taking edges out of an image. I need only the red edges I produced from the image, curve fit and find Trajectory.
This is a college project Im working. Would be great if someone could guide me as deadlines shortcoming.
Attached is the image below of how I want my output to be:
I am stuck at part (c). Outline.
Thanks in advace,
~Harshan Desu

请先登录，再回答此问题。

采纳的回答

Mehmed Saad
Mehmed Saad 2020-4-8
编辑：Mehmed Saad 2020-4-8
You have to get R component which means you have to find out value of R greater than both G and B in RGB data. (May be some threshold like 2 times G or B etc)
suppose the variable rgbtest has the data of pciture you've posted
then
red_comp = rbgtest(:,:,1)>rbgtest(:,:,2) & rbgtest(:,:,1)>rbgtest(:,:,3);
imshow(red_comp)
  5 个评论
显示 3更早的评论
Mehmed Saad
Mehmed Saad 2020-4-8
编辑：Mehmed Saad 2020-4-8
I think you should spend some time on it. Also try playing with the conditions which differs red from other colors
red_comp = rbgtest(:,:,1)>rbgtest(:,:,2) & rbgtest(:,:,1)>rbgtest(:,:,3);
Harshan Desu
Harshan Desu 2020-4-16
I tried all different conditions and all suggestions I got here sir, nothing is helping me out to get neat and smooth edges. Please help me out.
This is my another question link:
https://www.mathworks.com/matlabcentral/answers/516316-how-to-smooth-edges-of-an-image-with-complex-edges?s_tid=prof_contriblnk

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Image Processing Toolbox 的更多信息

标签

产品


版本

R2019b

Community Treasure Hunt

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

Start Hunting!

Translated by