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ImageMagick | Python

• https://docs.wand-py.org/
  • https://buildmedia.readthedocs.org/media/pdf/wand/latest/wand.pdf

pip install wand

https://github.com/emcconville/wand

I/O†

• Reading blob object in Python using wand library
  • https://www.codespeedy.com/reading-blob-object-in-python-using-wand-library/

with open("random_image.png", "rb") as f:
  image_blob = f.read()

with Image(blob = image_blob) as img:
  print("width = ", img.width)
  print("height = ", img.height)

• How to convert wand image object to open cv image (numpy array)
  • https://stackoverflow.com/questions/37015966/how-to-convert-wand-image-object-to-open-cv-image-numpy-array/37032551#37032551

from wand.image import Image as WandImage
from wand.color import Color
import numpy
import cv2

RESOLUTION=72
source_file='rose:'
img_buffer=None

with WandImage(filename=source_file, resolution=(RESOLUTION,RESOLUTION)) as img:
    img.background_color = Color('white')
    img.format        = 'tif'
    img.alpha_channel = False
    # Fill image buffer with numpy array from blob
    img_buffer=numpy.asarray(bytearray(img.make_blob()), dtype=numpy.uint8)

if img_buffer is not None:
    retval = cv2.imdecode(img_buffer, cv2.IMREAD_UNCHANGED)

別物†

• MagickWand