[HN Gopher] Intuitively Understanding Harris Corner Detector
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       Intuitively Understanding Harris Corner Detector
        
       Author : anilz
       Score  : 140 points
       Date   : 2023-09-11 12:35 UTC (9 hours ago)
        
 (HTM) web link (comsci.blog)
 (TXT) w3m dump (comsci.blog)
        
       | ur-whale wrote:
       | PSA : The Harris Corner detector, while interesting to understand
       | if you like linear algebra, is not exactly what you'd call state
       | of the art in the feature detection layer of computer vision.
        
         | DougMerritt wrote:
         | Yes? What _is_ the state of the art?
        
           | jhoydich wrote:
           | I believe the SIFT algorithm is most commonly used. Harris
           | struggles when features change in scale between images,
           | whereas SIFT does not. Harris can be outfitted with a
           | Laplacian pyramid to overcome the scale issue though.
        
             | mathisfun123 wrote:
             | which is funny since SIFT is basically just as ancient.
        
       | glitchc wrote:
       | I had to write one for an interview many moons ago. It's a fun
       | little exercise.
        
       | arketyp wrote:
       | I remember the eigenvector analysis of the original paper [1]
       | wasn't terribly inaccessible. I think an alternative title for
       | this blog post could be "Intuitively Understanding the Harris
       | Corner Detector Optimizations".
       | 
       | [1]
       | https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&d...
        
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       (page generated 2023-09-11 22:00 UTC)