How to Find the min and max coordinates of an object in an image

17 次查看（过去 30 天）
halima jamil
halima jamil 2015-10-3
评论： Matt J 2019-2-16
How to find the minX,minY,maxX,maxY of an object in a binary image

请先登录，再回答此问题。

采纳的回答

Matt J
Matt J 2015-10-3
编辑：Matt J 2015-10-3
[I,J]=find(yourImage);
minIJ=min([I,J],[],1);
maxIJ=max([I,J],[],1);
  5 个评论
显示 3更早的评论
Prathveraj Shetty
Prathveraj Shetty 2019-2-16
hello,
I have a doubt . if i have coordinates of a point and a digital image (i.e., either black or white (bitmap)). How to find the distance between the point and each pixel of the image.
Image Analyst
Image Analyst 2019-2-16
Try this, where (xp, yp) are the coordinates of your single point.
[rows, columns, numberOfColorChannels] = size(yourImage);
[x, y] = meshgrid(1:columns, 1:rows);
distanceImage = sqrt((x-xp).^2 + (y-yp).^2);
imshow(distanceImage, []);

请先登录，再进行评论。

更多回答（1 个）

Image Analyst
Image Analyst 2015-10-3
Note: Matt's solution only works if you have only 1 object in your binary image. If you have multiple objects, use regionprops() and ask for the BoundingBox measurement. See my Image Segmentation Tutorial for a full demo: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

类别

在 Help Center 和 File Exchange 中查找有关 Region and Image Properties 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