OpenCV でバイラテラルフィルタ

bilateral-filter.py

import cv2
import numpy as np

def bilateral(i, o, d=7, sigmaColor=32, sigmaSpace=10):
    img = cv2.imdecode(np.frombuffer(open(i, "rb").read(), np.uint8), cv2.IMREAD_COLOR | cv2.IMREAD_ANYDEPTH)
    denoised = cv2.bilateralFilter(img, d=d, sigmaColor=sigmaColor, sigmaSpace=sigmaSpace)
    ok, bin = cv2.imencode(".png", denoised, [cv2.IMWRITE_PNG_COMPRESSION, 9])
    assert ok
    open(o, "wb").write(bin.tobytes())

bilateral("input.png", "output.png", 7, 32, 10)