basis1769: List of basis functions for a 1769 x 1769 image.

In xhtai/cartridges: Algorithm to Compare Cartridge Case Images

Description

A dataset containing the pixels in each circularly symmetric basis function. For more details see https://github.com/xhtai/cartridges. These data are produced by getBasisFunctions.

Usage

basis1769

Format

A list of length 236463. Each list item corresponds to one basis function, and contains a data frame with the number of rows being the number of pixels in the basis function, and 3 columns:

i

i coordinate of pixel (ranges from 1 to 1769)

j

j coordinate of pixel (ranges from 1 to 1769)

i2j2

square of distance of pixel from the center

Basis functions are enumerated from center outwards, i.e. the first basis function is distance 0 from the center, the second is distance 1 from the center, etc.

xhtai/cartridges documentation built on June 1, 2019, 2:58 p.m.