Google Releases Key Part of Street View Pipeline 44
Posted
by
Soulskill
from the now-you-can-map-your-pillow-fort dept.
from the now-you-can-map-your-pillow-fort dept.
New submitter drom writes "Google released a key part of their Street View pipeline as open source on Tuesday: Ceres Solver. It's a large-scale nonlinear least squares minimizer. What does that mean? It's a way to fit a model (like expected position of a car) to data (like GPS positions or accelerometers). The library is completely general and works for many problems. It offers state of the art performance for bundle adjustment problems typical in 3D reconstruction, among others."
Poor effort, there's much better trolls out there (Score:5, Interesting)
Your comment suggests you don't know what at minimizer is, and I think you just wanted to say "Google is bad" to the first story related to Google.
Which is a pity, but smarter trolls than you will have a go at them later.
If this is a constrained minimizer then Libre Office and Open Office will suddenly get a major improvement in their solver functionality for example, because at the heart of a solver is a decent non linear minimizer.
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Re:Ignore dvh (Score:2, Interesting)
To be fair, he did ask for *practical uses*, not what it is mathematically. Practical uses include the examples given in the article. Another example from computer vision would be to find world positions of 2D image features based on a set of pictures from different positions.
Re:Ignore dvh (Score:2, Interesting)
http://www.cs.washington.edu/education/courses/cse455/10wi/lectures/455sfm.ppt [washington.edu]