imgScale {biOps} | R Documentation |
This function scales an image using the given interpolation and returns a new image.
imgScale(imgdata, x_scale, y_scale, interpolation)
imgdata |
The image |
x_scale |
The horizontal scale factor |
y_scale |
The vertical scale factor |
interpolation |
The interpolation method: nearestneighbor | bilinear | cubic | spline |
return an imagedata object
The scale factors are expected to be greater than 1. To reduce an image use the minification functions instead.
imgNearestNeighborScale
imgBilinearScale
imgCubicScale
imgSplineScale
imgMedianShrink
imgAverageShrink
## Not run: x <- readJpeg(system.file("samples", "violet.jpg", package="biOps")) y <- imgScale(x, 1.5, 1.5, 'bilinear') ## End(Not run)