Function lsst::ip::diffim::renormalizeKernelList

Function Documentation

lsst::afw::math::KernelList lsst::ip::diffim::renormalizeKernelList(lsst::afw::math::KernelList const &kernelListIn)

Renormalize a list of basis kernels.

Note

Renormalization means make Ksum_0 = 1.0, Ksum_i = 0.0, K_i.dot.K_i = 1.0

Note

Output list of shared pointers to FixedKernels

Note

Images are checked for their current kernel sum. If it is larger than std::numeric_limits<double>::epsilon(), the kernel is first divided by the kernel sum, giving it a kSum of 1.0, and then the first (normalized) component is subtracted from it, giving it a kSum of 0.0.

Parameters

• kernelListIn: input list of basis kernels