Top "Keypoint" questions

What are keypoints in image processing?

When using OpenCV for example, algorithms like SIFT or SURF are often used to detect keypoints. My question is what …

opencv image-processing sift surf keypoint

OpenCV return keypoints coordinates and area from blob detection, Python

I followed a blob detection example (using cv2.SimpleBlobDetector) and successfully detected the blobs in my binary image. But then …

python opencv image-processing blob keypoint

Visualizing OpenCV KeyPoints

I am learning OpenCV and at the moment I am trying to understand the underlying data stored in a KeyPoint …

opencv visualization keypoint

ucrtbase.dll: An invalid parameter was passed to a function that considers invalid parameters fatal

I'm currently working on a personal project with OpenCV and I have a few issues during the execution of the …

windows opencv visual-studio-2015 sift keypoint

convert keypoints to mat or save them to text file opencv

I have extracted SIFT features in (opencv open source) and they are extracted as keypoints. Now, I would like to …

c++ opencv vector mat keypoint

OpenCV FAST - too many features

I'm trying to extract features so I can later train a SVM which will be used in Android app. I'm …

python opencv feature-detection keypoint

drawing a line between feature points without using "drawmatches" function

I got the feature points from two consecutive by using different detectors in features2d framework: In the first frame, …

opencv feature-detection keypoint