Serrano P.'s profile - activity

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2014-03-04 03:42:21 -0600	commented answer	How to save a rectangular ROI? Thanks for providing the C++ solution! I posted the Python solution myself.
2014-03-04 03:40:42 -0600	answered a question	How to save a rectangular ROI? Python The OpenCV-Python interface uses NumPy arrays for image objects. So in Python you can do it as follows. First use `cv2.boundingRect` to get the bounding rectangle for a set of points (i.e. contours): `x, y, width, height = cv2.boundingRect(contours[i])` You can then use NumPy indexing to get your ROI from the image: `roi = img[y:y+height, x:x+width]` And save the ROI to a new file: `cv2.imwrite("roi.png", roi)`
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2014-02-28 06:39:42 -0600	asked a question	How to save a rectangular ROI? I have extracted contours with `cv2.findContours` from a binary mask which I created using a segmentation algorithm. Each contour corresponds to an object in the image that I want to a save to a separate image file. How can I get a rectangular region of interest (ROI) from a set of points (e.g. contour) and save that ROI to a separate image? I use Python, but if you can post the answer for C++, that's also appreciated.