July 2015
Intermediate to advanced
174 pages
3h 45m
English
Content preview from OpenCV Computer Vision with JavaBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Contour finding
When dealing with the binary images removed from the background, it is important to transform pixels into useful information, such as by grouping them into an object or making it very clear for the user to see. In this context, it is important to know the concept of connected components, which are a set of connected pixels in a binary image, and OpenCV's function used to find its contours.
In this section, we will examine the findContours function, which extracts contours of connected components in an image as well as a helper function that will draw contours in an image, which is drawContours. The findContours function is generally applied over an image that has gone through a threshold procedure as well as some canny image transformation. ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.