Pixpipejs

This does the following :

• opening a distant image file with AJAX request, using pixpipe.UrlImageReader
• creating a pixpipe.Image2D with the same size as the first, but monoband.
• run a pixpipe.ForEachPixelImageFilter ont the monoband image to create a radial gradient (values in [0, 1])
• multiply the loaded image with the gradient image using a pixpipe.SpectralScaleImageFilter
• displaying the final output in a canvas using pixpipe.CanvasImageWriter

The original image:

The transformed image, with a radial gradient: