bfscale 0.1.1

Best fit image scaling

bfscale

Best Fit Scale (bfscale) is a image downscaling method to create the highest possible image quality upon upscaling/upsampling with a certain scaling method (in this instance bilinear). This is achieved by fitting the parameters of the upscaling model to sections of the original image. In the case of bilinear, this can be done with a simple linear regression.

Bfscale was originally developed for improved Signed Distance Fields (SDFs), but was separated due to its broader usefulness.

Source: https://github.com/GroveDG/bfscale

PyPi: https://pypi.org/project/bfscale

Dependencies

• Numpy

How to Use

bfscale only has one function: bfscale.scale(img, scale).

• Returns an numpy image downscaled by a factor of scale, which must be an integer factor of the image shape.

Image Comparison

Unscaled	Bfscale 20% Scale	Linear 20% Scale

Image Source

Copyright (C) 2011-2014 Nicola Asuni - Tecnick.com LTD

The images shown are part of the TESTIMAGES project: http://testimages.tecnick.com