How to draw a straight across the centroid points of the barcode using best fit points

1 次查看（过去 30 天）
Kim
Kim 2012-1-16
This is the processed image and I can't increase the bwareaopen() as it won't work for my other image.
EDITED: Anyway I'm trying to find the shortest points in the centre points of the barcode, to get the straight line across the centre points in the barcode.
Example: After doing a centroid command, the points in the barcode are near to each other. Therefore, I just wanted to get the shortest points(which is the barcode) and draw a straight line across.
All the points need not be join, best fit points will do.
EDITED: Step 1
EDITED: Step 2
EDITED: Step 3

请先登录，再回答此问题。

回答（2 个）

Image Analyst
Image Analyst 2012-1-17
Maybe run imclose and filter it to grab the largest blob, then find the largest inscribed rectangle with this:
http://www.mathworks.com/matlabcentral/fileexchange/28155-inscribedrectangle
I haven't tried it so I don't know if it can handle tilted rectangles.
Otherwise, just use the points Chandra finds and call improfile() to get a profile line across the bar code. Then scan the profile to find out where it starts and stops.
Image Analyst
Image Analyst 2012-1-18
Kim, because you have two "lines" I think you need to use RANSAC (<http://en.wikipedia.org/wiki/Ransac)>, unless you can filter out the numbers from your image somehow, in which case you can use polyfit.

类别

在 Help Center 和 File Exchange 中查找有关 Image Filtering and Enhancement 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by