i want to detect just the ROI from the image.
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Image Analyst 2013 年 4 月 13 日
There are lots of ways to define an ROI. Take a look at my BlobsDemo Image Segmentation Tutorial where I define the foreground ROI on the basis of intensity. You can also do it based on color, different from a prior frame of video, etc. etc.
If you want me to post my demo where you can extract the N largest or smallest blobs, let me know.