Image Processing and Centroid Determination
显示 更早的评论
Hi,
I'm currently processing images to track objects and I want to determine the location of the object in pixels. I used the matlab function centroid to do this and it works perfect.
My question is I am getting numbers with decimals. ie(232.34,456.72) How are the extra significant figures being determined and can I trust these values?
Thanks in advance!
采纳的回答
Image Analyst
2013-7-19
Let's say the pixels are considered to be at the center of the number. So with this image
[0, 1, 1, 0]
There is a pixel at 2, and one at 3. So the centroid would be at 2.5. If the image is
[0, 1, 1, 1, 1, 0
0, 1, 1, 1, 1, 0]
The xCentroid is at 3.5 and the y centroid is at 1.5. As you can imagine, as you get lots more pixels, the centroid could be at some other fractional location. Does that explain it?
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Computer Vision with Simulink 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 
