Some astronomical matching functions.
Project description
Quick Match
This is a package with some 2-d match functions used in astronomy work.
By Dr Jie Zheng and Dr Lin-qiao Jiang, from 2019
Upload at Sep 2023
match
A fast 2-d match function, with a time complexity of O(nlogn+mlogm).
findneighbor
The main part of the match function. Been picked out so other program can call it.
match2d
A simple 2-d match function, but has time and space complexity of O(m*n). It works well when m or n is small.
offset1d
A function find out offset of each dimension. For 2-d image align, can be used twice for x and y.
make_tri & match_triangle
Making triangles by given points. As a preparation step of triangle matching in an astrometric process.
Match triangles from stars (point sources) of two images.
mean_xy and mean_offset1d
A image matching method by mean of rows and cols. It will find the best integer offset between two images without finding stars.
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