python3 skimage program to look at noise level of most recent .jpg file in directory and do action based on noise level

gistfile1.txt

#! /usr/bin/env -S python3 -u

# python3 routine using scikit image library to determine of foscam camera has had been blinded at night
# and switched to day mode due to car headlights
# program looks at most recent still image captured from camera and check image noise level using scikit image measure
# 202109071212 
#
# example output:
# runtime : 1.42 , adjusting camera, response : <Response [200]>, noise level : 3.3104319013
#

PROGRAM_NAME = "check_image_noise"
VERSION_MAJOR = "1"
VERSION_MINOR = "1"
WORKING_DIRECTORY = "/home/user/image_noise"


import syslog
import time
import requests

import glob
import os

import cv2
from skimage.restoration import estimate_sigma

def estimate_noise(image_path):
    img = cv2.imread(image_path)
    # https://scikit-image.org/docs/dev/api/skimage.restoration.html#skimage.restoration.estimate_sigma
    return estimate_sigma(img, multichannel=True, average_sigmas=True)


# get routine start time in seconds
start_time = time.time()

# image_dir = "/webcam-videos/foscam/stills/"
image_dir = "./"

list_of_files = glob.glob(image_dir + "*.jpg")
latest_file = max(list_of_files, key=os.path.getctime)

latest_noise = estimate_noise(latest_file)

print(latest_file, '{0:.10f}'.format(latest_noise))

# TODO: noise level hardcode, should make it configurable or better dynamic
if latest_noise > 1.0 :
    # response = requests.get("http://192.168.1.99:88/cgi-bin/CGIProxy.fcgi?cmd=setMainVideoStreamType&streamType=0&usr=aaaaaa&pwd=bbbbbb")
    # adjust_message = "adjusting camera, response : " + str(response) + ", noise level : "
    adjust_message = "adjustment made, noise level : " 
else :
    adjust_message = "no adjustment made, noise level : "

# get routine end time in seconds
end_time = time.time()

run_time = '{0:.2f}'.format(end_time - start_time)

adjust_message = "runtime : " + run_time +" , " + adjust_message

print(adjust_message + '{0:.10f}'.format(latest_noise))
syslog.syslog(adjust_message + '{0:.10f}'.format(latest_noise))