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Questions tagged [keypoint]

In computer vision field a keypoint is an interest point detected by the SIFT algorithm. Use this tag for programming issues related to the use of keypoints in the field of computer vision.

is an algorithm that finds "keypoints" in images that are robust to scale variations, perspective and lighting. In order to identify those keypoints, descriptors are generated basing on the surrounding pixels of the keypoint. This way, the same keypoints can be located in different images, which is called matching.

Programing questions related to keypoints in computer vision applications are an appropriate field for this tag.

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Generate local features For each keypoint by using SIFT

I have an image and i want to locate key points by using SIFT detector and group them, then i want to generate local features for each key point by using SIFT, would you please help me how I can do it ? Please give me any suggestions I really…
Baran Barani
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Estimating pose via semantic segmentation pipeline

Currently, I am implementing multi-class semantic segmentation pipeline for my custom dataset. At the end of training/evaluation, I will get the corresponding masks of my classes/objects. From the output masks, I need to find the pose of those…
Dr.strange
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Keypoint detection when target appears multiple times

I am implementing a keypoint detection algorithm to recognize biomedical landmarks on images. I only have one type of landmark to detect. But in a single image, 1-10 of these landmarks can be present. I'm wondering what's the best way to organize…
Frederico Severgnini
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Data augmentation for dense correspondence?

I build a dataset by CAD software for dense correspondence task in computer vision. I trained on that data but got a severe overfitting. Then I used data augmentation, while the loss on validation set didn't decrease. I even gradually increase the…
潇洒张
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Image Analysis: sift / harris / affine / RANSAC

I am not sure if this falls under the criteria of a proper question, but still, I would like to give it a shot. I am looking for a library or function that takes two SIFT descriptors in a form of a file (or a matrix) of…
Plump Worm
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OpenCV iOS : store Keypoints and Descriptors in file or any other

Can any one help me to store the keypoints and descriptors get from the OpenCV in iOS. I tried for NSArray, NSSet, NSDictionary, NSUserdefault , but not got success. Secondly is it possible to store as file?
Atul Prakash
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What is the state-of-art algorithms for planar object recognition?

I read about SIFT, SURF, Fern, BRIFT and even the evolution algorithms. But I not sure which from those algorithms is the best. So I need your help. Of course I know each algorithms have its own advantages, so here is the key for you to…
Tai Le
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