# Tagged Questions

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### Processing weighted points of interest. Is there a name for this task/algorithm?

Is there a name for the following problem? Is there a measure of quality of a given solution? How can we even define what a proper solution is? Context: I want to detect long lines (most lines over ...
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### transformation between two coodinate system [on hold]

I have two coordinate system; camera coordinate system and monitor coordinate system. I want to obtain the translation and rotation between these two coordinate system. the camera is placed under the ...
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### HOG vs. neural networks for person detection

I am very new to computer vision, (a high school student) and I am working on a project to count the number of people present in a room. I have tried to use the HOGDecriptor for person detection ...
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### How to label a video for supervised learning?

I have just started discovering the machine learning world! I found many tutorials showing how to deal with different types of data. I walked through some tensorFlow tutorials and I think they have ...
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### Is there an efficient algorithm to extract the farthest ends of a thin contour?

Let's say you have pixel bitmaps that look something like this: From this I can easily extract a contour, which will be a concave polygon defined by a set of 2D points. The question is what is the ...
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### Width of a String/Line in an Image

I have been looking for a method to find the width of a line. I found the solution(link: http://www.mathworks.com/matlabcentral/answers/88645-average-width-of-lines), "sum up the image to get the ...
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### How to select a good window size in the Running Gaussian Average method for Selective Background Updating?

I have been studying the Selective Background Updating in Running Gaussian Average Method, as discussed in the Wikipedia (the Variant method). The details of the algorithm, as I understand, is as ...
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### Register images containing objects with varying distance to the cameras

I'm learning about using image registration to align two images, e.g., two photographs of the same scene taken from a slightly different location. What factors influence how well we can align the ...
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### Clustering a set of images using keypoint descriptors

I'm trying to cluster around 16000 images into ~200 clusters, using kmeans with metric as euclidean distance or cosine distance. I understand that i need to extract keypoint descriptors to compute ...
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### Algorithm for Filling Regions with Small Gaps

I am looking for an algorithm that fills a region with one color, but the edge of the region is not completely closed (i.e. one or more gaps are being left). The result is like the use of the Paint ...