Using least squares regression to calculate a circle from a freehand drawing

Re:Using least squares regression to calculate a circle from... by 8note on Thursday April 30, 2015 @05:54PM (#9467912)

The score is a bit silly; to get a better one, just add more points.

A smattering of poits scribbled close together nets me 220000, while a single big ring earns only 700.

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Re:Using least squares regression to calculate a circle from... by austin_y on Thursday April 30, 2015 @05:57PM (#9467926)

I noticed the same thing. I was able to really boost my score by just drawing over the 'same' circle a bunch of times. Doing that got my score up into the 7-8 million range.

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Re:Using least squares regression to calculate a circle from... by kazinator on Thursday April 30, 2015 @07:36PM (#9468281)

But that makes sense. If people draw a circle by overlaying multiple approximations, it gets better.

If there were a contest out of this, it could be disqualified: i.e. you start and finish on approximately the same point.

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Re:Using least squares regression to calculate a circle from... by bananabob on Thursday April 30, 2015 @09:20PM (#9468783)

To get zero error, you can just draw 3 points.

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Re:Using least squares regression to calculate a circle from... by jlarocco on Friday May 01, 2015 @12:30AM (#9469425)

My record score 276000 with radius 45 and 155 points. Kinda addicting for some reason.

Edit: Just got 902017 for 232 points, 62 radius.

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Re:Using least squares regression to calculate a circle from... by inverba on Thursday April 30, 2015 @07:44PM (#9468333)

You can also just "color" the entire page and get a fairly high score.

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