/
speed-cam.py
2022 lines (1887 loc) · 83.8 KB
/
speed-cam.py
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#!/usr/bin/python3
"""
speed-cam.py written by Claude Pageau
Windows, Unix, Raspberry (Pi) - python opencv2 Object Speed tracking
using picamera module, Web Cam or RTSP IP Camera
GitHub Repo at https://github.com/pageauc/speed-camera
Post issue to Github.
This is a python openCV object speed tracking demonstration program.
It will detect speed in the field of view and use openCV to calculate the
largest contour and return its x,y center coordinate. The image is tracked for
a specified loop count and the final speed is calculated.
Note: Variables for this program are stored in config.py
Some of this code is based on a YouTube tutorial by
Kyle Hounslow using C here https://www.youtube.com/watch?v=X6rPdRZzgjg
Thanks to Adrian Rosebrock jrosebr1 at http://www.pyimagesearch.com
for the PiVideoStream Class code available on github at
https://github.com/jrosebr1/imutils/blob/master/imutils/video/pivideostream.py
Here is my YouTube video demonstrating a previous speed tracking demo
program using a Raspberry Pi B2 https://youtu.be/09JS7twPBsQ
and a fun speed lapse video https://youtu.be/-xdB_x_CbC8
Installation
------------
Requires a Raspberry Pi or compatible, Windows, Unix PC or Mac with webcam or RTSP IP Camera.
or a virtual machine unix distro eg Debian. Runs best under python3 but code is compatible with python2.
Works with RPI camera module using picamera or libpicamera2 python module.
See github wiki for detail https://github.com/pageauc/speed-camera/wiki
Install from a GitHub download, Docker or using Curl install from logged in SSH session per commands below.
Code should run on a non RPI platform using a Web Cam or RTSP ip cam
curl -L https://raw.github.com/pageauc/rpi-speed-camera/master/speed-install.sh | bash
or
wget https://raw.github.com/pageauc/rpi-speed-camera/master/speed-install.sh
chmod +x speed-install.sh
./speed-install.sh
./speed-cam.py
Note to Self - Look at eliminating python variable camel case and use all snake naming
"""
from __future__ import print_function
PROG_VER = "13.2" # current version of this python script
print('Loading Wait...')
import os
import sys
import time
import datetime
import glob
import shutil
import logging
import sqlite3
import numpy as np
# import the main strmcam launch module
try:
from strmcam import strmcam
except Exception as err_msg:
print("ERROR: %s" % err_msg)
sys.exit(1)
# Get information about this script including name, launch path, etc.
# This allows script to be renamed or relocated to another directory
mypath = os.path.abspath(__file__) # Find the full path of this python script
# get the path location only (excluding script name)
baseDir = mypath[0 : mypath.rfind("/") + 1]
baseFileName = mypath[mypath.rfind("/") + 1 : mypath.rfind(".")]
PROG_NAME = os.path.basename(__file__)
HORIZ_LINE = "----------------------------------------------------------------------"
print(HORIZ_LINE)
print("%s %s written by Claude Pageau" % (PROG_NAME, PROG_VER))
print("Motion Track Largest Moving Object and Calculate Speed per Calibration.")
print(HORIZ_LINE)
# This is a dictionary of the default settings for speed-cam.py
# If you don't want to use a config.py file these will create the required
# variables with default values. Change dictionary values if you want different
# variable default values.
# A message will be displayed if a variable is Not imported from config.py.
# Note: plugins can override default and config.py values if plugins are
# enabled. This happens after config.py variables are imported
default_settings = {
"CALIBRATE_ON": True,
"ALIGN_CAM_ON": False,
"ALIGN_DELAY_SEC": 2,
"SHOW_SETTINGS_ON": False,
"CAL_OBJ_PX_L2R": 90,
"CAL_OBJ_MM_L2R": 4700.0,
"CAL_OBJ_PX_R2L": 95,
"CAL_OBJ_MM_R2L": 4700.0,
"PLUGIN_ENABLE_ON": False,
"PLUGIN_NAME": "picam240",
"GUI_WINDOW_ON": False,
"GUI_THRESH_WIN_ON": False,
"GUI_CROP_WIN_ON": False,
"LOG_VERBOSE_ON": True,
"LOG_FPS_ON": False,
"LOG_DATA_TO_CSV": False,
"LOG_TO_FILE_ON": False,
"LOG_FILE_PATH": "speed-cam.log",
"MO_SPEED_MPH_ON": False,
"MO_TRACK_EVENT_COUNT": 5,
"MO_MIN_AREA_PX": 100,
"MO_LOG_OUT_RANGE_ON": True,
"MO_MAX_X_DIFF_PX": 20,
"MO_MIN_X_DIFF_PX": 1,
"MO_X_LR_SIDE_BUFF_PX": 10,
"MO_TRACK_TIMEOUT_SEC": 0.5,
"MO_EVENT_TIMEOUT_SEC": 0.3,
"MO_MAX_SPEED_OVER": 0,
"MO_CROP_AUTO_ON": False,
"MO_CROP_X_LEFT": 50,
"MO_CROP_X_RIGHT": 250,
"MO_CROP_Y_UPPER": 90,
"MO_CROP_Y_LOWER": 150,
"CAMERA": "pilibcam",
"CAM_LOCATION": "Front Window",
"USBCAM_SRC": 0,
"RTSPCAM_SRC": "rtsp://user:password@IP:554/path",
"IM_SIZE": (320, 240),
"IM_VFLIP": False,
"IM_HFLIP": False,
"IM_ROTATION": 0,
"IM_FRAMERATE": 30,
"IM_DIR_PATH": "media/images",
"IM_PREFIX": "speed-",
"IM_FORMAT_EXT": ".jpg",
"IM_JPG_QUALITY": 95,
"IM_JPG_OPTIMIZE_ON": False,
"IM_SAVE_4AI_ON": False,
"IM_SAVE_4AI_POS_DIR": "media/ai/pos",
"IM_SAVE_4AI_NEG_DIR": "media/ai/pos",
"IM_SAVE_4AI_DAY_THRESH": 10,
"IM_SAVE_4AI_NEG_TIMER_SEC": 60 * 60 * 6,
"IM_FIRST_AND_LAST_ON": False,
"IM_SHOW_CROP_AREA_ON": True,
"IM_SHOW_SPEED_FILENAME_ON": False,
"IM_SHOW_TEXT_ON": True,
"IM_SHOW_TEXT_BOTTOM_ON": True,
"IM_FONT_SIZE_PX": 12,
"IM_FONT_THICKNESS": 2,
"IM_FONT_SCALE": 0.5,
"IM_FONT_COLOR": (255, 255, 255),
"IM_BIGGER": 3.0,
"IM_MAX_FILES": 0,
"IM_SUBDIR_MAX_FILES": 1000,
"IM_SUBDIR_MAX_HOURS": 0,
"IM_RECENT_MAX_FILES": 100,
"IM_RECENT_DIR_PATH": "media/recent",
"SPACE_TIMER_HRS": 0,
"SPACE_FREE_MB": 500,
"SPACE_MEDIA_DIR": "media/images",
"SPACE_FILE_EXT ": "jpg",
"CV_SHOW_CIRCLE_ON": False,
"CV_CIRCLE_SIZE_PX": 5,
"CV_LINE_WIDTH_PX": 1,
"CV_WINDOW_BIGGER": 1.0,
"BLUR_SIZE": 10,
"THRESHOLD_SENSITIVITY": 20,
"DB_DIR": "data",
"DB_NAME": "speed_cam.db",
"DB_TABLE": "speed",
"GRAPH_PATH": "media/graphs",
"GRAPH_ADD_DATE_TO_FILENAME": False,
"GRAPH_RUN_TIMER_HOURS": 0.5,
"GRAPH_RUN_LIST": [
["hour", 2, 0],
["hour", 7, 10],
["hour", 14, 10],
["day", 28, 0],
],
"WEB_SERVER_PORT": 8080,
"WEB_SERVER_ROOT": "media",
"WEB_PAGE_TITLE": "SPEED-CAMERA Media",
"WEB_PAGE_REFRESH_ON": True,
"WEB_PAGE_REFRESH_SEC": "900",
"WEB_PAGE_BLANK_ON": False,
"WEB_IMAGE_HEIGHT": "768",
"WEB_IFRAME_WIDTH_PERCENT": "70%",
"WEB_IFRAME_WIDTH": "100%",
"WEB_IFRAME_HEIGHT": "100%",
"WEB_MAX_LIST_ENTRIES": 0,
"WEB_LIST_HEIGHT": "768",
"WEB_LIST_BY_DATETIME_ON": True,
"WEB_LIST_SORT_DESC_ON": True,
"IM_SHOW_SIGN_ON": False,
"IM_SIGN_RESIZE": (1280, 720),
"IM_SIGN_TEXT_XY": (100, 675),
"IM_SIGN_FONT_SCALE": 30.0,
"IM_SIGN_FONT_THICK_PX": 60,
"IM_SIGN_FONT_COLOR": (255, 255, 255),
"IM_SIGN_TIMEOUT_SEC": 5,
}
# Color data for OpenCV lines and text
cvWhite = (255, 255, 255)
cvBlack = (0, 0, 0)
cvBlue = (255, 0, 0)
cvGreen = (0, 255, 0)
cvRed = (0, 0, 255)
QUOTE = '"' # Used for creating QUOTE delimited log file of speed data
FIX_MSG = """
---------- Upgrade Instructions -----------
To Fix Problem Run ./menubox.sh UPGRADE menu pick.
After upgrade newest config.py will be named config.py.new
In SSH or terminal perform the following commands
to update to latest config.py
cd ~/speed-camera
cp config.py config.py.bak
cp config.py.new config.py
Then Edit nsno config.py and transfer any customized settings
from config.py.bak File to config.py
-------------------------------------------
Wait 5 sec ....
"""
# Check for config.py variable file and import. Warn if file not Found.
# Logging is not used since the LOG_FILE_PATH variable is needed before
# setting up logging
configFilePath = os.path.join(baseDir, "config.py")
if os.path.exists(configFilePath):
# Read Configuration variables from config.py file
try:
from config import *
except Exception as err_msg:
print("WARN : %s" % err_msg)
else:
print("WARN : Missing config.py file - File Not Found %s" % configFilePath)
# Check if variables were imported from config.py. If not create variable using
# the values in the default_settings dictionary above.
warn_msg = False
for key, val in default_settings.items():
try:
exec(key)
except NameError:
print("WARN : config.py Variable Not Found. Setting " + key + " = " + str(val))
exec(key + "=val")
warn_msg = True
if warn_msg:
print(FIX_MSG)
time.sleep(5)
# Now that variables are imported from config.py Setup Logging since we have LOG_FILE_PATH
if LOG_TO_FILE_ON:
logging.basicConfig(
level=logging.DEBUG,
format="%(asctime)s %(levelname)-8s %(funcName)-10s %(message)s",
datefmt="%Y-%m-%d %H:%M:%S",
filename=LOG_FILE_PATH,
filemode="w",
)
elif LOG_VERBOSE_ON:
logging.basicConfig(
level=logging.DEBUG,
format="%(asctime)s %(levelname)-8s %(funcName)-10s %(message)s",
datefmt="%Y-%m-%d %H:%M:%S",
)
else:
logging.basicConfig(
level=logging.CRITICAL,
format="%(asctime)s %(levelname)-8s %(funcName)-10s %(message)s",
datefmt="%Y-%m-%d %H:%M:%S",
)
# Do a quick check to see if the sqlite database directory path exists
DB_DIR_PATH = os.path.join(baseDir, DB_DIR)
if not os.path.exists(DB_DIR_PATH): # Check if database directory exists
os.makedirs(DB_DIR_PATH) # make directory if Not Found
DB_PATH = os.path.join(DB_DIR_PATH, DB_NAME) # Create path to db file
try: # Check to see if opencv is installed
import cv2
except ImportError:
logging.error("Could Not import cv2 library")
if sys.version_info > (2, 9):
logging.error("python3 failed to import cv2")
logging.error("Try installing opencv for python3")
logging.error("For RPI See https://github.com/pageauc/opencv3-setup")
else:
logging.error("python2 failed to import cv2")
logging.error("Try running menubox.sh then UPGRADE menu pick.")
logging.error("%s %s Exiting Due to Error", PROG_NAME, PROG_VER)
sys.exit(1)
# Import a single variable from the search_config.py file
# This is done to auto create a media/search directory
try:
from search_config import search_dest_path
except ImportError:
search_dest_path = "media/search"
logging.warning("Problem importing search_dest_path variable")
logging.info("Setting default value search_dest_path = %s", search_dest_path)
# Check for user_motion_code.py file to import and error out if not found.
userMotionFilePath = os.path.join(baseDir, "user_motion_code.py")
USER_MOTION_CODE_ON = True # Set Flag to run user_motion_code.py
if os.path.isfile(userMotionFilePath):
try:
import user_motion_code
except Exception as err_msg:
print("WARN: %s" % err_msg)
# set flag to ignore running user motion code after succsessful track.
USER_MOTION_CODE_ON = False
else:
print("WARN : import Failed. File Not Found %s" % userMotionFilePath)
USER_MOTION_CODE_ON = False
# Import Settings from specified plugin if PLUGIN_ENABLE_ON=True
if PLUGIN_ENABLE_ON: # Check and verify plugin and load variable overlay
pluginDir = os.path.join(baseDir, "plugins")
# Check if there is a .py at the end of PLUGIN_NAME variable
if PLUGIN_NAME.endswith(".py"):
PLUGIN_NAME = PLUGIN_NAME[:-3] # Remove .py extensiion
pluginPath = os.path.join(pluginDir, PLUGIN_NAME + ".py")
logging.info("pluginEnabled %s", pluginPath)
if not os.path.isdir(pluginDir):
logging.error("plugin Directory Not Found at %s", pluginDir)
logging.info("Rerun github curl install script to install plugins")
logging.info("https://github.com/pageauc/pi-timolo/wiki/")
logging.info("How-to-Install-or-Upgrade#quick-install")
logging.warning("%s %s Exiting Due to Error", PROG_NAME, PROG_VER)
sys.exit(1)
elif not os.path.exists(pluginPath):
logging.error("Plugin File Not Found %s", pluginPath)
logging.info("Check Spelling of PLUGIN_NAME Value in %s", configFilePath)
logging.info("------- Valid Names -------")
validPlugin = glob.glob(pluginDir + "/*py")
validPlugin.sort()
for entry in validPlugin:
pluginFile = os.path.basename(entry)
plugin = pluginFile.rsplit(".", 1)[0]
if not ((plugin == "__init__") or (plugin == "current")):
logging.info(" %s", plugin)
logging.info("------- End of List -------")
logging.info(" Note: PLUGIN_NAME Should Not have .py Ending.")
logging.info("or Rerun github curl install command. See github wiki")
logging.info("https://github.com/pageauc/speed-camera/wiki/")
logging.info("How-to-Install-or-Upgrade#quick-install")
logging.warning("%s %s Exiting Due to Error", PROG_NAME, PROG_VER)
sys.exit(1)
else:
pluginCurrent = os.path.join(pluginDir, "current.py")
try: # Copy image file to recent folder
logging.info("Copy %s to %s", pluginPath, pluginCurrent)
shutil.copy(pluginPath, pluginCurrent)
except OSError as err:
logging.error("Copy Failed %s to %s - %s", pluginPath, pluginCurrent, err)
logging.info("Check permissions, disk space, Etc.")
logging.warning("%s %s Exiting Due to Error", PROG_NAME, PROG_VER)
sys.exit(1)
# add plugin directory to program PATH
sys.path.insert(0, pluginDir)
try:
from plugins.current import *
except Exception as err_msg:
logging.warning("%s" % err_msg)
CAMERA_WIDTH, CAMERA_HEIGHT = IM_SIZE
# fix possible invalid values when resizing
if CV_WINDOW_BIGGER < 0.1:
CV_WINDOW_BIGGER = 0.1
if IM_BIGGER < 0.1:
IM_BIGGER = 0.1
# Calculate conversion from camera pixel width to actual speed.
CONV_KPH_2_MPH = 0.621371 # conversion from KPH to MPH
CONV_MM_PER_SEC_2_KPH = 0.0036 # conversion from MM/sec to KPH
px_to_kph_L2R = float(CAL_OBJ_MM_L2R / CAL_OBJ_PX_L2R * CONV_MM_PER_SEC_2_KPH)
px_to_kph_R2L = float(CAL_OBJ_MM_R2L / CAL_OBJ_PX_R2L * CONV_MM_PER_SEC_2_KPH)
if MO_SPEED_MPH_ON:
speed_units = "mph"
speed_conv_L2R = CONV_KPH_2_MPH * px_to_kph_L2R
speed_conv_R2L = CONV_KPH_2_MPH * px_to_kph_R2L
else:
speed_units = "kph"
speed_conv_L2R = px_to_kph_L2R
speed_conv_R2L = px_to_kph_R2L
# path to alignment camera image
align_filename = os.path.join(IM_RECENT_DIR_PATH, "align_cam.jpg")
speed_CSV_filepath = os.path.join(baseDir, baseFileName + ".csv")
AI_CSV_filepath = os.path.join(baseDir, "ai_pos_data.csv")
# ------------------------------------------------------------------------------
def show_config(filename):
'''
Display program configuration variable settings
read config file and print each decoded line
'''
print("")
logging.info("Reading settings per %s", configFilePath)
with open(filename, 'rb') as f:
for line in f:
print(line.decode().strip())
if PLUGIN_ENABLE_ON:
logging.warning("Some Settings Above will be changed by Plugin %s", PLUGIN_NAME)
# ------------------------------------------------------------------------------
def get_fps(start_time, frame_count):
"""
Calculate and display frames per second processing
"""
if frame_count >= 1000:
duration = float(time.time() - start_time)
FPS = float(frame_count / duration)
logging.info("%.2f fps Last %i Frames", FPS, frame_count)
frame_count = 0
start_time = time.time()
else:
frame_count += 1
return start_time, frame_count
# ------------------------------------------------------------------------------
def is_daytime(image, threshold):
"""
Calculate the mean pixel average value for a grayimage
used for determining if it is day or night. Bright enough to save image.
"""
day = False
grayimage = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
pix_ave = int(np.mean(grayimage))
if pix_ave >= threshold:
day = True
return day
# ------------------------------------------------------------------------------
def timer_is_on(sched_time):
"""
Based on schedule date setting see if current
datetime is past and return boolean
to indicate timer is off
"""
is_on = True
if sched_time <= datetime.datetime.now():
is_on = False # sched date/time has passed so start sequence
return is_on
# ------------------------------------------------------------------------------
def make_media_dirs():
"""
Create media default folders per config.py settings.
"""
cwd = os.getcwd()
html_path = "media/html"
if not os.path.isdir(IM_DIR_PATH):
logging.info("Creating Image Storage Folder %s", IM_DIR_PATH)
os.makedirs(IM_DIR_PATH)
os.chdir(IM_DIR_PATH)
os.chdir(cwd)
if IM_RECENT_MAX_FILES > 0:
if not os.path.isdir(IM_RECENT_DIR_PATH):
logging.info("Create Recent Folder %s", IM_RECENT_DIR_PATH)
try:
os.makedirs(IM_RECENT_DIR_PATH)
except OSError as err:
logging.error("Failed to Create Folder %s - %s", IM_RECENT_DIR_PATH, err)
if not os.path.isdir(search_dest_path):
logging.info("Creating Search Folder %s", search_dest_path)
os.makedirs(search_dest_path)
if not os.path.isdir(html_path):
logging.info("Creating html Folder %s", html_path)
os.makedirs(html_path)
if IM_SAVE_4AI_ON and not os.path.isdir(IM_SAVE_4AI_POS_DIR):
os.makedirs(IM_SAVE_4AI_POS_DIR)
if IM_SAVE_4AI_ON and not os.path.isdir(IM_SAVE_4AI_NEG_DIR):
os.makedirs(IM_SAVE_4AI_NEG_DIR)
os.chdir(cwd)
# ------------------------------------------------------------------------------
def show_settings():
"""
Display formatted program variable settings from config.py
"""
if LOG_VERBOSE_ON:
print(HORIZ_LINE)
print("Note: To Send Full Output to File Use command")
print("python -u ./%s | tee -a log.txt" % PROG_NAME)
print(
"Set log_data_to_file=True to Send speed_Data to CSV File %s.log"
% baseFileName
)
print(HORIZ_LINE)
print("")
print(
"Debug Messages .. LOG_VERBOSE_ON=%s LOG_FPS_ON=%s CALIBRATE_ON=%s"
% (LOG_VERBOSE_ON, LOG_FPS_ON, CALIBRATE_ON)
)
print(" MO_LOG_OUT_RANGE_ON=%s" % MO_LOG_OUT_RANGE_ON)
print(
"Plugins ......... PLUGIN_ENABLE_ON=%s PLUGIN_NAME=%s"
% (PLUGIN_ENABLE_ON, PLUGIN_NAME)
)
print(
"Calibration ..... CAL_OBJ_PX_L2R=%i px CAL_OBJ_MM_L2R=%i mm speed_conv_L2R=%.5f"
% (CAL_OBJ_PX_L2R, CAL_OBJ_MM_L2R, speed_conv_L2R)
)
print(
" CAL_OBJ_PX_R2L=%i px CAL_OBJ_MM_R2L=%i mm speed_conv_R2L=%.5f"
% (CAL_OBJ_PX_R2L, CAL_OBJ_MM_R2L, speed_conv_R2L)
)
if PLUGIN_ENABLE_ON:
print(" (Change Settings in %s)" % pluginPath)
else:
print(" (Change Settings in %s)" % configFilePath)
print(
"Logging ......... Log_data_to_CSV=%s log_filename=%s.csv (CSV format)"
% (LOG_DATA_TO_CSV, baseFileName)
)
print(
" LOG_TO_FILE_ON=%s LOG_FILE_PATH=%s"
% (LOG_TO_FILE_ON, LOG_FILE_PATH)
)
print(" SQLITE3 DB_PATH=%s DB_TABLE=%s" % (DB_PATH, DB_TABLE))
print(
"Speed Trigger ... Log only if MO_MAX_SPEED_OVER > %i %s"
% (MO_MAX_SPEED_OVER, speed_units)
)
print(
" and MO_TRACK_EVENT_COUNT >= %i consecutive motion events"
% MO_TRACK_EVENT_COUNT
)
print(
"Exclude Events .. If MO_MIN_X_DIFF_PX < %i or MO_MAX_X_DIFF_PX > %i px"
% (MO_MIN_X_DIFF_PX, MO_MAX_X_DIFF_PX)
)
print(
" If MO_CROP_Y_UPPER < %i or MO_CROP_Y_LOWER > %i px" % (MO_CROP_Y_UPPER, MO_CROP_Y_LOWER)
)
print(
" or MO_CROP_X_LEFT < %i or MO_CROP_X_RIGHT > %i px" % (MO_CROP_X_LEFT, MO_CROP_X_RIGHT)
)
print(
" If MO_MAX_SPEED_OVER < %i %s"
% (MO_MAX_SPEED_OVER, speed_units)
)
print(
" If MO_EVENT_TIMEOUT_SEC > %.2f seconds Start New Track"
% (MO_EVENT_TIMEOUT_SEC)
)
print(
" MO_TRACK_TIMEOUT_SEC=%.2f sec wait after Track Ends"
" (avoid retrack of same object)" % (MO_TRACK_TIMEOUT_SEC)
)
print(
"Speed Photo ..... Size=%ix%i px IM_BIGGER=%.1f"
" rotation=%i VFlip=%s HFlip=%s "
% (
image_width,
image_height,
IM_BIGGER,
IM_ROTATION,
IM_VFLIP,
IM_HFLIP,
)
)
print(
" IM_DIR_PATH=%s image_Prefix=%s"
% (IM_DIR_PATH, IM_PREFIX)
)
print(
" IM_FONT_SIZE_PX=%i px high IM_SHOW_TEXT_BOTTOM_ON=%s"
% (IM_FONT_SIZE_PX, IM_SHOW_TEXT_BOTTOM_ON)
)
print(
" IM_JPG_QUALITY=%s IM_JPG_OPTIMIZE_ON=%s"
% (IM_JPG_QUALITY, IM_JPG_OPTIMIZE_ON)
)
print(
"Motion Settings . Size=%ix%i px px_to_kph_L2R=%f px_to_kph_R2L=%f speed_units=%s"
% (CAMERA_WIDTH, CAMERA_HEIGHT, px_to_kph_L2R, px_to_kph_R2L, speed_units)
)
print(" CAM_LOCATION= %s" % CAM_LOCATION)
print(
"OpenCV Settings . MO_MIN_AREA_PX=%i sq-px BLUR_SIZE=%i"
" THRESHOLD_SENSITIVITY=%i CV_CIRCLE_SIZE_PX=%i px"
% (MO_MIN_AREA_PX, BLUR_SIZE, THRESHOLD_SENSITIVITY, CV_CIRCLE_SIZE_PX)
)
print(
" CV_WINDOW_BIGGER=%d GUI_WINDOW_ON=%s"
" (Display OpenCV Status Windows on GUI Desktop)"
% (CV_WINDOW_BIGGER, GUI_WINDOW_ON)
)
print(
" IM_FRAMERATE=%i fps video stream speed"
% IM_FRAMERATE
)
print(
"Sub-Directories . IM_SUBDIR_MAX_HOURS=%i (0=off)"
" IM_SUBDIR_MAX_FILES=%i (0=off)"
% (IM_SUBDIR_MAX_HOURS, IM_SUBDIR_MAX_FILES)
)
print(
" IM_RECENT_DIR_PATH=%s IM_RECENT_MAX_FILES=%i (0=off)"
% (IM_RECENT_DIR_PATH, IM_RECENT_MAX_FILES)
)
if SPACE_TIMER_HRS > 0: # Check if disk mgmnt is enabled
print(
"Disk Space ..... Enabled - Manage Target Free Disk Space."
" Delete Oldest %s Files if Needed" % (SPACE_FILE_EXT)
)
print(
" Check Every SPACE_TIMER_HRS=%i hr(s) (0=off)"
" Target SPACE_FREE_MB=%i MB min is 100 MB)"
% (SPACE_TIMER_HRS, SPACE_FREE_MB)
)
print(
" If Needed Delete Oldest SPACE_FILE_EXT=%s SPACE_MEDIA_DIR=%s"
% (SPACE_FILE_EXT, SPACE_MEDIA_DIR)
)
else:
print(
"Disk Space ..... Disabled - SPACE_TIMER_HRS=%i"
" Manage Target Free Disk Space. Delete Oldest %s Files"
% (SPACE_TIMER_HRS, SPACE_FILE_EXT)
)
print(
" SPACE_TIMER_HRS=%i (0=Off)"
" Target SPACE_FREE_MB=%i (min=100 MB)" % (SPACE_TIMER_HRS, SPACE_FREE_MB)
)
print("")
print(HORIZ_LINE)
return
# ------------------------------------------------------------------------------
def take_calibration_image(speed, filename, cal_image):
"""
Create a calibration image for determining value of IMG_VIEW_FT variable
Create calibration hash marks
"""
# If there is bad contrast with background you can change the hash
# colors to give more contrast. You need to change values below
# per values cvRed, cvBlue, cvWhite, cvBlack, cvGreen
hash_color = cvRed
motion_win_color = cvBlue
for i in range(10, image_width - 9, 10):
cv2.line(cal_image, (i, MO_CROP_Y_UPPER - 5), (i, MO_CROP_Y_UPPER + 30), hash_color, 1)
# This is motion window
cal_image = speed_image_add_lines(cal_image, motion_win_color)
print(
"----------------------------- Create Calibration Image "
"-----------------------------"
)
print("")
print(" Instructions for using %s image for camera calibration" % filename)
print("")
print(
" Note: If there is only one lane then L2R and R2L settings will be the same"
)
print(
" 1 - Use L2R and R2L with Same Size Reference Object, Eg. same vehicle for both directions."
)
print(
" 2 - For objects moving L2R Record CAL_OBJ_PX_L2R Value Using Red MO_CROP_Y_UPPER Hash Marks at every 10 px Current Setting is %i px"
% CAL_OBJ_PX_L2R
)
print(
" 3 - Record CAL_OBJ_MM_L2R of object. This is Actual length in mm of object above Current Setting is %i mm"
% CAL_OBJ_MM_L2R
)
print(
" If Recorded Speed %.1f %s is Too Low, Increasing CAL_OBJ_MM_L2R to Adjust or Visa-Versa"
% (speed, speed_units)
)
print(
"Repeat Calibration with same object moving R2L and update config.py R2L variables"
)
print("CAL_OBJ_MM_R2L and CAL_OBJ_PX_R2L accordingly")
if PLUGIN_ENABLE_ON:
print(" 4 - Edit %s File and Change Values for Above Variables." % pluginPath)
else:
print(
" 4 - Edit %s File and Change Values for the Above Variables."
% configFilePath
)
print(" 5 - Do a Speed Test to Confirm/Tune Settings. You May Need to Repeat.")
print(
" 6 - When Calibration is Finished, Set config.py Variable CALIBRATE_ON = False"
)
print(" Then Restart speed-cam.py and monitor activity.")
print("")
print(" WARNING: It is Advised to Use 320x240 Stream for Best Performance.")
print(" Higher Resolutions Need More OpenCV Processing")
print(" and May Reduce Data Accuracy and Reliability.")
print("")
print(" Calibration Image Saved To %s%s " % (baseDir, filename))
print(" View Calibration Image in Web Browser (Ensure webserver.py is started)")
print("")
print(
"---------------------- Press cntl-c to Quit Calibration Mode "
"-----------------------"
)
return cal_image
# ------------------------------------------------------------------------------
def subdir_latest(directory):
"""
Scan for directories and return most recent
"""
dirList = [
name
for name in os.listdir(directory)
if os.path.isdir(os.path.join(directory, name))
]
if len(dirList) > 0:
lastSubDir = sorted(dirList)[-1]
lastSubDir = os.path.join(directory, lastSubDir)
else:
lastSubDir = directory
return lastSubDir
# ------------------------------------------------------------------------------
def subdir_create(directory, prefix):
"""
Create media subdirectories base on required naming
"""
now = datetime.datetime.now()
# Specify folder naming
subDirName = "%s%d%02d%02d-%02d%02d" % (
prefix,
now.year,
now.month,
now.day,
now.hour,
now.minute,
)
subDirPath = os.path.join(directory, subDirName)
if not os.path.exists(subDirPath):
try:
os.makedirs(subDirPath)
except OSError as err:
logging.error(
"Cannot Create Dir %s - %s, using default location.", subDirPath, err
)
subDirPath = directory
else:
logging.info("Created %s", subDirPath)
else:
subDirPath = directory
return subDirPath
# ------------------------------------------------------------------------------
def delete_old_files(maxFiles, dirPath, prefix):
"""
Delete Oldest files gt or
equal to maxfiles that match filename prefix
"""
try:
fileList = sorted(
glob.glob(os.path.join(dirPath, prefix + "*")), key=os.path.getmtime
)
except OSError as err:
logging.error("Problem Reading Directory %s", dirPath)
logging.error("%s", err)
logging.error("Possibly symlink destination File Does Not Exist")
logging.error("To Fix - Try Deleting All Files in recent folder %s", dirPath)
else:
while len(fileList) >= maxFiles:
oldest = fileList[0]
oldestFile = oldest
try: # Remove oldest file in recent folder
fileList.remove(oldest)
os.remove(oldestFile)
except OSError as err:
logging.error("Cannot Remove %s - %s", oldestFile, err)
# ------------------------------------------------------------------------------
def subdir_check_max_files(directory, filesMax):
"""
Count number of files in a folder path
"""
fileList = glob.glob(directory + "/*")
count = len(fileList)
if count > filesMax:
makeNewDir = True
logging.info("Total Files in %s Exceeds %i ", directory, filesMax)
else:
makeNewDir = False
return makeNewDir
# ------------------------------------------------------------------------------
def subdir_check_max_hrs(directory, hrsMax, prefix):
"""
Rxtract the date-time from the directory name
"""
# Note to self need to add error checking
dirName = os.path.split(directory)[1] # split dir path and keep dirName
# remove prefix from dirName so just date-time left
dirStr = dirName.replace(prefix, "")
# convert string to datetime
dirDate = datetime.datetime.strptime(dirStr, "%Y%m%d-%H%M")
rightNow = datetime.datetime.now() # get datetime now
diff = rightNow - dirDate # get time difference between dates
days, seconds = diff.days, diff.seconds
dirAgeHours = days * 24 + seconds // 3600 # convert to hours
if dirAgeHours > hrsMax: # See if hours are exceeded
makeNewDir = True
logging.info("MaxHrs %i Exceeds %i for %s", dirAgeHours, hrsMax, directory)
else:
makeNewDir = False
return makeNewDir
# ------------------------------------------------------------------------------
def subdir_checks(maxHours, maxFiles, directory, prefix):
"""
Check if motion SubDir needs to be created
"""
if maxHours < 1 and maxFiles < 1: # No Checks required
# logging.info('No sub-folders Required in %s', directory)
subDirPath = directory
else:
subDirPath = subdir_latest(directory)
if subDirPath == directory: # No subDir Found
logging.info("No sub folders Found in %s", directory)
subDirPath = subdir_create(directory, prefix)
elif maxHours > 0 and maxFiles < 1: # Check MaxHours Folder Age Only
if subdir_check_max_hrs(subDirPath, maxHours, prefix):
subDirPath = subdir_create(directory, prefix)
elif maxHours < 1 and maxFiles > 0: # Check Max Files Only
if subdir_check_max_files(subDirPath, maxFiles):
subDirPath = subdir_create(directory, prefix)
elif maxHours > 0 and maxFiles > 0: # Check both Max Files and Age
if subdir_check_max_hrs(subDirPath, maxHours, prefix):
if subdir_check_max_files(subDirPath, maxFiles):
subDirPath = subdir_create(directory, prefix)
else:
logging.info("MaxFiles Not Exceeded in %s", subDirPath)
os.path.abspath(subDirPath)
return subDirPath
# ------------------------------------------------------------------------------
def files_to_delete(mediaDirPath, extension=IM_FORMAT_EXT):
"""
Return a list of files to be deleted
"""
return sorted(
(
os.path.join(dirname, filename)
for dirname, dirnames, filenames in os.walk(mediaDirPath)
for filename in filenames
if filename.endswith(extension)
),
key=lambda fn: os.stat(fn).st_mtime,
reverse=True,
)
# ------------------------------------------------------------------------------
def make_rel_symlink(sourceFilenamePath, symDestDir):
'''
Creates a relative symlink in the specified symDestDir
that points to the Target file via a relative rather than
absolute path. If a symlink already exists it will be replaced.
Warning message will be displayed if symlink path is a file
rather than an existing symlink.
'''
# Initialize target and symlink file paths
targetDirPath = os.path.dirname(sourceFilenamePath)
srcfilename = os.path.basename(sourceFilenamePath)
symDestFilePath = os.path.join(symDestDir, srcfilename)
# Check if symlink already exists and unlink if required.
if os.path.islink(symDestFilePath):
logging.info("Remove Existing Symlink at %s ", symDestFilePath)
os.unlink(symDestFilePath)
# Check if symlink path is a file rather than a symlink. Error out if required
if os.path.isfile(symDestFilePath):
logging.warning("Failed. File Exists at %s.", symDestFilePath)
return
# Initialize required entries for creating a relative symlink to target file
absTargetDirPath = os.path.abspath(targetDirPath)
absSymDirPath = os.path.abspath(symDestDir)
relativeDirPath = os.path.relpath(absTargetDirPath, absSymDirPath)
# Initialize relative symlink entries to target file.
symFilePath = os.path.join(relativeDirPath, srcfilename)
# logging.info("ln -s %s %s ", symFilePath, symDestFilePath)
os.symlink(symFilePath, symDestFilePath) # Create the symlink
# Check if symlink was created successfully
if os.path.islink(symDestFilePath):
logging.info("Saved at %s", symDestFilePath)
else:
logging.warning("Failed to Create Symlink at %s", symDestFilePath)
# ------------------------------------------------------------------------------
def save_recent(recentMax, recentDir, filepath, prefix):
"""
Create a symlink file in recent folder or file if non unix system
or symlink creation fails.
Delete Oldest symlink file if recentMax exceeded.
"""
if recentMax > 0:
delete_old_files(recentMax, os.path.abspath(recentDir), prefix)
try:
make_rel_symlink(filepath, recentDir)
except OSError as err:
logging.error("symlink Failed: %s", err)
try: # Copy image file to recent folder (if no support for symlinks)
shutil.copy(filepath, recentDir)
logging.info("Saved %s to %s", filepath, recentDir)
except OSError as err:
logging.error("Copy Failed %s to %s - %s", filepath, recentDir, err)
# ------------------------------------------------------------------------------
def free_disk_space_upto(freeMB, mediaDir, extension=IM_FORMAT_EXT):
"""
Walks mediaDir and deletes oldest files
until SPACE_FREE_MB is achieved Use with Caution
"""
mediaDirPath = os.path.abspath(mediaDir)
if os.path.isdir(mediaDirPath):
MB2Bytes = 1048576 # Conversion from MB to Bytes
targetFreeBytes = freeMB * MB2Bytes
fileList = files_to_delete(mediaDir, extension)
totFiles = len(fileList)
delcnt = 0
logging.info("Session Started")
while fileList:
statv = os.statvfs(mediaDirPath)
availFreeBytes = statv.f_bfree * statv.f_bsize
if availFreeBytes >= targetFreeBytes:
break
filePath = fileList.pop()
try:
os.remove(filePath)
except OSError as err:
logging.error("Del Failed %s", filePath)
logging.error("Error: %s", err)
else:
delcnt += 1
logging.info("Del %s", filePath)
logging.info(
"Target=%i MB Avail=%i MB Deleted %i of %i Files ",
targetFreeBytes / MB2Bytes,
availFreeBytes / MB2Bytes,
delcnt,
totFiles,
)
# Avoid deleting more than 1/4 of files at one time
if delcnt > totFiles / 4:
logging.warning("Max Deletions Reached %i of %i", delcnt, totFiles)
logging.warning(
"Deletions Restricted to 1/4 of total files per session."
)
break
logging.info("Session Ended")
else:
logging.error("Directory Not Found - %s", mediaDirPath)
# ------------------------------------------------------------------------------
def free_disk_space_check(lastSpaceCheck):
"""
Free disk space by deleting some older files
"""
if SPACE_TIMER_HRS > 0: # Check if disk free space timer hours is enabled
# See if it is time to do disk clean-up check
if (
datetime.datetime.now() - lastSpaceCheck
).total_seconds() > SPACE_TIMER_HRS * 3600:
lastSpaceCheck = datetime.datetime.now()
# Set freeSpaceMB to reasonable value if too low
if SPACE_FREE_MB < 100:
diskFreeMB = 100
else:
diskFreeMB = SPACE_FREE_MB
logging.info(
"SPACE_TIMER_HRS=%i diskFreeMB=%i SPACE_MEDIA_DIR=%s SPACE_FILE_EXT=%s",
SPACE_TIMER_HRS,
diskFreeMB,
SPACE_MEDIA_DIR,
SPACE_FILE_EXT,
)