Package Exports

ndarray-warp

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (ndarray-warp) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

ndarray-warp

Inverse image warping operations for ndarrays.

Example

//Load input image
var lena = require("luminance")(require("lena"))

//Allocate storage for result
var result = require("zeros")([512, 512])

//Apply warp
require("ndarray-warp")(result, lena, function(out, inp) {
  var dx = inp[0] - 256
  var dy = inp[1] - 256
  var r  = Math.sqrt(dx * dx + dy * dy)
  var theta = Math.atan2(dy, dx)
  
  out[0] = 0.9 * r * Math.cos(theta + 0.01 * r) + 256
  out[1] = 0.7 * r * Math.sin(theta + 0.01 * r) + 256
})

//Save the result to stdout
require("save-pixels")(result, "png").pipe(process.stdout)

Which produces the following image:

Install

npm install ndarray-warp

`require("ndarray-warp")(output, input, map(out_coord, in_coord))`

Applies an inverse warp to an image

output is an ndarray image that gets the result of applying the warp
input is an ndarray iamge that is warped
map(result, coord) is a mapping from the coordinates of out image to input image.
- result gets the resulting coordinate in input
- coord is the coordinate in output

ndarray-warp

Package Exports

Readme

ndarray-warp

Example

Install

require("ndarray-warp")(output, input, map(out_coord, in_coord))

Credits

`require("ndarray-warp")(output, input, map(out_coord, in_coord))`