def wand_trim(pil_image):
"""
Trim black borders from an image with ImageMagick's algorithm. This method
seems to be more effective than PIL's ImageChops from pil_trim.
:param pil_image: PIL.Image object
"""
wand_img = pil_to_wand(pil_image)
wand_img.trim(color="black", fuzz=20.0, percent_background=0.2)
return wand_to_pil(wand_img)
def get_colors(image, dither="floyd_steinberg"):
"""
:param image: PIL.Image object
:param dither: dither method from wand.image.DITHER_METHODS (version => 7)
"""
logger.info("Extracting colors")
magick = pil_to_wand(image)
magick.quantize(10, dither=dither)
magick.unique_colors()
pil_pixels = wand_to_pil(magick)
return list(pil_pixels.getdata())