How can I measure the centroid of the object of an image and how to measure the distance from the centroid?
1 次查看(过去 30 天)
显示 更早的评论
I need to measure the centre point of a lip image and measure the distance from the centroid to some point (left side, right side, up and down) of the lip. Must I convert the image to gray image first or can I convert it into YCbCr colour space?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/197272/image.jpeg)
0 个评论
采纳的回答
Image Analyst
2018-10-7
Try the color thresholder on the apps tab of the tool ribbon to get a mask. Then call regionprops on the mask to get the centroid. Then use sqrt() to get distances from the centroid to other locations you're interested in.
更多回答(1 个)
Evelynn Tan
2018-10-31
编辑:Evelynn Tan
2018-10-31
1 个评论
Image Analyst
2018-10-31
Only you can say whether the mask is acceptable to the remainder of your algorithm.
To find distance, use sqrt(). To find centroids, use regionprops(). To get rid of small blobs, use bwareafilt().
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!