def trackingPoint(self, img, idx):
current_point = self.points[idx]
current_velocity = self.velocities[idx]
# Get a local tracking image
sub_background = self.background[
current_point[0] - self.box_delta_y_up:current_point[0] +
self.box_delta_y_down, current_point[1] -
self.box_delta_x_left:current_point[1] + self.box_delta_x_right]
sub_img_orig = img[current_point[0] -
self.box_delta_y_up:current_point[0] +
self.box_delta_y_down, current_point[1] -
self.box_delta_x_left:current_point[1] +
self.box_delta_x_right]
background_ext = cv2.BackgroundSubtractorMOG2()
background_ext.apply(sub_background)
sub_img = background_ext.apply(sub_img_orig)
# Remove noise and shadows
_, img_thresholded = cv2.threshold(sub_img, 200, 255,
cv.CV_THRESH_BINARY)
contours, _ = cv2.findContours(img_thresholded, cv.CV_RETR_EXTERNAL,
cv.CV_CHAIN_APPROX_SIMPLE)
filtered_contours = []
for contour in contours:
if cv2.contourArea(contour) >= self.area_threshold:
filtered_contours.append(contour)
down_right_bounds = np.array(
map(partial(np.amax, axis=0), filtered_contours), np.int)
up_left_bounds = np.array(
map(partial(np.amin, axis=0), filtered_contours), np.int)
centers = np.array(
map(partial(np.mean, axis=0), zip(down_right_bounds,
up_left_bounds)), np.int)
tracking_points = []
for f, c in zip(down_right_bounds, centers):
tracking_points.append([f[0][1], c[0][0]])
if len(tracking_points) == 0:
# tracking_points = np.array(
# [(c[0][1], c[0][0]) for c in center], np.int)
tracking_points.append([
self.box_delta_y_up + self.velocities[idx][0],
self.box_delta_x_left + self.velocities[idx][1]
])
else:
tracking_points = np.array(tracking_points, np.int)
if len(tracking_points) >= 1:
point = self.__minPoint(tracking_points)
point[0] = current_point[0] + point[0] - self.box_delta_y_up
point[1] = current_point[1] + point[1] - self.box_delta_x_left
self.velocities[idx][0] = point[0] - current_point[0]
self.velocities[idx][1] = point[1] - current_point[1]
return point
def mog2(vid):
# requires opencv 2.4
fgbg = cv2.BackgroundSubtractorMOG2()
oldtime = vid.get(cv2.cv.CV_CAP_PROP_POS_MSEC)
while (vid.isOpened() &
(vid.get(cv2.cv.CV_CAP_PROP_POS_MSEC) - oldtime <= 30000)):
ret, frame = vid.read()
fgmask = fgbg.apply(frame)
cv2.imshow('frame', fgmask)
cv2.waitKey(1)
vid.release()
cv2.destroyAllWindows()
# def knn(vid):
# fgbg = cv2.createBackgroundSubtractorKNN()
# while 1:
# ret,frame = vid.read()
# fgmask = fgbg.apply(frame)
# bgmask = fgbg.getBackgroundImage()
# cv2.imshow('frame',fgmask)
# cv2.imshow('bg',bgmask)
# cv2.waitKey(1)
# cv2.destroyAllWindows()
# vid.release()
def aa(request):
cv2.ocl.setUseOpenCL(False)
cap = cv2.VideoCapture("D:/Document/WeChat Files/hsfbhao539/Files/office/foreground.avi")
#cap = cv2.VideoCapture("D:/Document/WeChat Files/hsfbhao539/Files/office/foreground.avi")
# 方法一：
fgbg1 = cv2.BackgroundSubtractorMOG()
# 方法二：
fgbg2 = cv2.BackgroundSubtractorMOG2()
# 方法三： 需要OpenCV3.0
#kernel = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (3,3))
#fgbg3 = cv2.BackgroundSubtractorGMG()
while True:
ret, frame = cap.read()
if ret:
fg_mask1 = fgbg1.apply(frame)
fg_mask2 = fgbg2.apply(frame)
#fgmask3 = fgbg3.apply(frame)
#fgmask3 = cv2.morphologyEx(fgmask3, cv2.MORPH_OPEN, kernel)
result = np.hstack((fg_mask1, fg_mask2))
cv2.imshow('frame', result)
k = cv2.waitKey(30) & 0xff
if k == 27:
break
else:
break
cap.release()
cv2.destroyAllWindows()
def init():
global bg_sub, arrow_cnt, package_path, make_move_service
rospy.init_node('recognition')
rospy.wait_for_service(make_move_service_name)
make_move_service = rospy.ServiceProxy(make_move_service_name, MakeMove)
bg_sub = cv2.BackgroundSubtractorMOG2()
ros_pack = rospkg.RosPack()
package_path = ros_pack.get_path('nao_dance')
arrow = cv2.pyrDown(cv2.imread(package_path + '/res/arrow.png', 0))
ret, thresh = cv2.threshold(arrow, 50, 255, 0)
contours, hierarchy = cv2.findContours(thresh, cv2.RETR_TREE,
cv2.CHAIN_APPROX_SIMPLE)
arrow_cnt = contours[0]
# canvas = np.zeros(arrow.shape, np.uint8)
# cv2.drawContours(canvas, contours, 0, 255, 2)
# cv2.imshow('arrow', canvas)
cv2.namedWindow('edge')
cv2.createTrackbar('canny min', 'edge', 100, 1000, nothing)
cv2.createTrackbar('canny max', 'edge', 200, 1000, nothing)
cv2.namedWindow('result')
cv2.createTrackbar('diff% max', 'result', 20, 100, nothing)
cv2.createTrackbar('area min', 'result', 300, 1000, nothing)
cv2.createTrackbar('saturation split', 'result', 105, 255, nothing)
cv2.namedWindow('contours')
cv2.createTrackbar('approx', 'contours', 34, 100, nothing)
def run(self, frame, options):
self.options = options
results = {'frame': frame}
# Apply normalization
if self.options['normalize']:
# Normalize only the saturation channel
results['frame'] = self.normalize(frame)
# print 'Normalizing frame'
# Apply background subtraction
if self.options['background_sub']:
frame = cv2.blur(frame, (2, 2))
# print 'running sub'
if self.background_sub is not None:
bg_mask = self.background_sub.apply(frame)
else:
self.background_sub = cv2.BackgroundSubtractorMOG2(
0, 30, False)
bg_mask = self.background_sub.apply(frame)
results['background_sub'] = bg_mask
return results
def MOG2_test(input_path, save_path):
cap = cv2.VideoCapture(input_path)
# 1. 获取视频码率、格式：
fps = cap.get(cv2.cv.CV_CAP_PROP_FPS)
size = (int(cap.get(cv2.cv.CV_CAP_PROP_FRAME_WIDTH)),
int(cap.get(cv2.cv.CV_CAP_PROP_FRAME_HEIGHT)))
codec = cap.get(cv2.cv.CV_CAP_PROP_FOURCC)
print(fps, size, codec)
# 指定写视频的格式, I420-avi, MJPG-mp4
videoWriter = cv2.VideoWriter(save_path, cv2.cv.CV_FOURCC('I', '4', '2', '0'), fps, size)
fgbg = cv2.BackgroundSubtractorMOG()
kernel = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (3, 3))
fgbg = cv2.BackgroundSubtractorMOG2()
while cap.isOpened():
ret, frame = cap.read()
if ret == True:
fgmask = fgbg.apply(frame)
fgmask = cv2.morphologyEx(fgmask, cv2.MORPH_OPEN, kernel)
print(type(fgmask))
videoWriter.write(fgmask)
cv2.imshow('frame', fgmask)
k = cv2.waitKey(30) & 0xff
if k == 27:
break
else:
break
print('finish.')
cap.release()
cv2.destroyAllWindows()
def __init__(self, image_shape=(640, 480)):
# shape have 3 channels
shape_rgb = image_shape+(3,)
self.current_frame = np.zeros(shape=shape_rgb, dtype=np.uint8)
self.proposal_foreground = np.zeros(shape=shape_rgb, dtype=np.uint8)
self.foreground_mask_long_term = np.zeros(shape=image_shape)
self.foreground_mask_short_term = np.zeros(shape=image_shape)
self.background_aggregator = np.zeros(shape=image_shape, dtype=np.int8)
self.proposal_mask = np.zeros(shape=image_shape, dtype=np.uint8) # mask from aggregator
# define Zivkovic background subtraction function LONG
self.f_bg_long = cv2.BackgroundSubtractorMOG2(BG_ZIV_HIST, BG_ZIV_LONG_THRESH, False)
# define zivkovic background subtraction function SHORT
self.f_bg_short = cv2.BackgroundSubtractorMOG2(BG_ZIV_HIST, BG_ZIV_SHORT_THRESH, False)
def __init__(detector, **kwargs):
# setup default config
detector.config = {}
default_params = detector.default_params()
for pinfos in default_params.values():
detector.config.update({pi.name: pi.default for pi in pinfos})
# modify based on user args
dict_update_subset(detector.config, kwargs)
# Setup GMM background subtraction algorithm
logger.debug('Using GMM from cv2.__version__ = {}'.format(
cv2.__version__))
if cv2.__version__.startswith('2'):
# not sure about these params
detector.background_model = cv2.BackgroundSubtractorMOG2(
history=detector.config['n_training_frames'],
varThreshold=detector.config['gmm_thresh'],
bShadowDetection=False)
else:
detector.background_model = cv2.createBackgroundSubtractorMOG2(
history=detector.config['n_training_frames'],
varThreshold=detector.config['gmm_thresh'],
detectShadows=False)
# Setup detection filter algorithm
filter_config = dict_subset(
detector.config, [pi.name for pi in default_params['filter']])
detector.filter = DetectionShapeFilter(**filter_config)
detector.n_iters = 0
# masks from previous iter are kept in memory for visualization
detector._masks = {}
def main():
bg_subtractor = cv2.BackgroundSubtractorMOG2()
car_counter = None # Will be created after first frame is captured
# Set up image source
#cap = cv2.VideoCapture("flow.mp4")
cap = cv2.VideoCapture(URL)
while True:
ret, frame = cap.read()
if not ret:
print 'failed'
else:
frame = cv2.resize(frame, (0, 0), fx = K, fy = K)
if car_counter is None:
# We do this here, so that we can initialize with actual frame size
#car_counter = VehicleCounter(frame.shape[:2], frame.shape[1] / 2)
car_counter = VehicleCounter(frame.shape[:2], DIVIDER1, DIVIDER2, DIVIDER3, DIVIDER4, DIVIDER5, DIVIDER6)
#print frame.shape
# Archive raw frames from video to disk for later inspection/testing
processed = process_frame(frame, bg_subtractor, car_counter, K)
# #cv2.imshow('Source Image', frame)
# cv2.imshow('Processed Image', processed)
# c = cv2.waitKey(10)
# if c == 27:
# break
cap.release()
cv2.destroyAllWindows()
def __init__(self, width, height):
self.width = width
self.height = height
#Backgroundsubtractor for real computers
#self.fgbg = cv2.createBackgroundSubtractorMOG2(10, 8, False)
#Backgroundsubtractor for the PI
self.fgbg = cv2.BackgroundSubtractorMOG2(10, 64, False)
self.maxX = 0
self.minX = 0
self.picChangeTime = None
self.first = True
self.currCont = None
self.biggestCont = None
self.prevBigId = None
self.kernel = np.ones((3, 3), 'uint8')
self.blackImg = None
self.normImg = None
#Contour settings
self.maxCont = 0
self.minCont = 0
def __init__(self, vid_file, skel_file, track_file):
self.vid = vid_file
self.track_mask = cv2.imread(track_file, cv2.IMREAD_GRAYSCALE)
self.skel = cv2.imread(skel_file, cv2.IMREAD_GRAYSCALE)
self.width = self.skel.shape[1]
self.height = self.skel.shape[0]
self.skel[0, :] = 0
self.skel[:, 0] = 0
self.skel[self.height - 1, :] = 0
self.skel[:, self.width - 1] = 0
# Specify pixel coord for startline, finishline, \
# and the gap (a pixel separates startline and finishline)
# RaceV05 - track6
self.start = [490, 103]
self.finish = [492, 103]
self.sfgap = [491, 103]
self.newskel = np.zeros([1020, 1463]).astype(np.uint8)
self.coord_mapping()
# cv2.imshow('s',self.pixMap)
self.kernel = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (3, 3))
self.fgbg = cv2.BackgroundSubtractorMOG2()
def create_gist_parameters(self, selected_path, video_name):
org_images = images.read_video_as_list_by_path(selected_path,
video_name)
background_model = cv2.BackgroundSubtractorMOG2(len(org_images),
varThreshold=266,
bShadowDetection=True)
for frame in org_images:
background_model.apply(
frame, len(org_images)) # given frame, learning-rate
th = 150
fgmask_set = []
dp_mask = []
for frame in org_images:
forward = background_model.apply(
frame
) # create foreground mask which is gray-scale(0~255) image.
tmp = cv2.cvtColor(forward, cv2.COLOR_GRAY2BGR) # convert to color
dp_mask.append(tmp)
#convert gray-scale foreground mask to binary image.
a = stats.threshold(forward, threshmin=th, threshmax=255, newval=0)
a = stats.threshold(a, threshmin=0, threshmax=th, newval=1)
fgmask_set.append(a)
return fgmask_set, org_images, dp_mask
def main(args):
rospy.init_node('graspNet', anonymous=True)
MOG = cv2.BackgroundSubtractorMOG2()
cameraTopic = '/camera/rgb/image_color'
depthTopic = '/depth'
stream(cameraTopic, depthTopic)
print 'complete!'
cv2.destroyAllWindows()
return 0
def MOG2_test(input_path, save_path):
cap = cv2.VideoCapture(input_path)
# 1. 获取视频码率、格式：
fps = cap.get(cv2.cv.CV_CAP_PROP_FPS)
size = (int(cap.get(cv2.cv.CV_CAP_PROP_FRAME_WIDTH)),
int(cap.get(cv2.cv.CV_CAP_PROP_FRAME_HEIGHT)))
codec = cap.get(cv2.cv.CV_CAP_PROP_FOURCC)
print(fps, size, codec)
# 指定写视频的格式, I420-avi, MJPG-mp4
videoWriter = cv2.VideoWriter(save_path, cv2.cv.CV_FOURCC('I', '4', '2', '0'), fps, size)
fgbg = cv2.BackgroundSubtractorMOG()
kernel = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (5, 5))
fgbg = cv2.BackgroundSubtractorMOG2()
while cap.isOpened():
ret, frame = cap.read()
if ret == True:
fgmask = fgbg.apply(frame)
# cv2.imshow('frame222', fgmask)
videoWriter.write(fgmask)
fgmask = cv2.morphologyEx(fgmask, cv2.MORPH_OPEN, kernel)
# print(type(fgmask))
# fgmask = cv2.cvtColor(fgmask, cv2.COLOR_BGR2GRAY)
# ret, fgmask = cv2.threshold(fgmask, 114, 255, cv2.THRESH_BINARY) # 2. 二值化，转为0-255，
# 闭运算，闭运算用来连接被误分为许多小块的对象，
closed = cv2.morphologyEx(fgmask, cv2.MORPH_CLOSE, kernel)
# 显示腐蚀后的图像
# cv2.imshow("Close", closed)
# 开运算，开运算用于移除由图像噪音形成的斑点。
opened = cv2.morphologyEx(fgmask, cv2.MORPH_OPEN, kernel)
# 显示腐蚀后的图像
# cv2.imshow("Open", opened)
# videoWriter.write(fgmask)
cv2.imshow('frame', fgmask)
k = cv2.waitKey(30) & 0xff
if k == 27:
break
else:
break
print('finish.')
cap.release()
cv2.destroyAllWindows()
def __init__(self,VideoSize,history = 2*60*4,scaleDown = 2):
self.scale_size = (VideoSize[0]/scaleDown,VideoSize[1]/scaleDown)
self.orgSize = VideoSize
#self.mask = np.zeros((scale_size[0]/2,scale_size[1]/2,1),dtype = 'uint8')
self.bgs = cv2.BackgroundSubtractorMOG2(history=history,varThreshold=9) # 60 sec * 4fps
self.fgmask = None
self.learning = True
self.kernel3x3 = cv2.getStructuringElement(cv2.MORPH_ELLIPSE,(3,3))
self.stoplearning_timeout = Tick();
self.isDrawMask = False
def __init__(self): self.settings = settings.Settings() self.method = self.settings.bsMethod if self.method == 0: self.fgbg = cv2.BackgroundSubtractorMOG2(self.settings.MOG2history, self.settings.MOG2thresh, self.settings.MOG2shadow) self.foregroundMask = None if self.method == 1: self.backgroundFrame = None self.frameCount = 1
def __init__(self, vid_file):
vidName = vid_file
self.vid = av.open(vidName)
self.num_frames = 0
self.kernel = cv2.getStructuringElement(cv2.MORPH_ELLIPSE,(3,3))
# cv2.createbackgroundSubstractor() works in cv3.0
# for 2.4.x use the following:
self.fgbg = cv2.BackgroundSubtractorMOG2()
self.detector = cv2.SimpleBlobDetector()
def __init__(self, history, threshold, detectShadows):
self.history = history
self.threshold = threshold
self.detectShadows = detectShadows
version = int(re.findall(r'\d+', cv2.__version__)[0])
if version == 3:
self.operator = cv2.createBackgroundSubtractorMOG2(self.history,
self.threshold, self.detectShadows)
elif version == 2:
self.operator = cv2.BackgroundSubtractorMOG2(self.history,
self.threshold, self.detectShadows)
else:
raise Exception("Unsupported OpenCV version {0}".format(version))
def show_webcam(mirror=False):
cam = cv2.VideoCapture(0)
fgbg = cv2.BackgroundSubtractorMOG2()
fgmask = None
while True:
ret_val, img = cam.read()
if mirror:
img = cv2.flip(img, 1)
fgmask = fgbg.apply(img, fgmask, 0.03)
cv2.imshow('my webcam', fgmask)
print img.shape, img.dtype
if cv2.waitKey(1) == 27:
break # esc to quit
cv2.destroyAllWindows()
def main():
cap = cv2.VideoCapture('../../background_subtraction/src/vtest.avi')
fgbg = cv2.BackgroundSubtractorMOG2()
while(1) :
ret, frame = cap.read()
fgmask = fgbg.apply(frame)
cv2.imshow('frame',fgmask)
k = cv2.waitKey(30) & 0xff
if k == 27 :
break
cp.release()
cv2.destroyAllWindows()
def testBackgroundSubtractorMOG(dataset_path, ID, method, save_masks, Color):
# Check directories
output_dir = dataset_path + ID + '/' + method
print 'Running background subtraction using ' + method + ' ...'
print 'Output masks will be saved at "' + output_dir + '" directory'
if not os.path.exists(output_dir):
os.makedirs(output_dir)
# Use MOG or MOG2 according to input method
if method == 'MOG':
fgbg = cv2.BackgroundSubtractorMOG()
elif method == 'MOG2':
fgbg = cv2.BackgroundSubtractorMOG2()
# Get input frames size
frames_path = dataset_path + ID + '/input'
frame_list = sorted(os.listdir(frames_path))
nrows, ncols, nchannels = cv2.imread(
os.path.join(frames_path, frame_list[0])).shape
mask_vec = np.zeros([1, nrows * ncols])
# Read dataset
train_frames, test_frames, train_gts, test_gts = readDataset(
dataset_path, ID, Color)
# Run MOG
for idx in range(len(test_frames)):
if Color:
im = np.uint8(
np.reshape(test_frames[idx], (nrows, ncols, nchannels)))
else:
im = np.uint8(np.reshape(test_frames[idx], (nrows, ncols)))
fgmask = fgbg.apply(im, learningRate=0.01)
fgmask = fgmask.ravel()
fgmask[fgmask == 127] = 0
fgmask[fgmask > 127] = 1
mask_vec = np.vstack((mask_vec, fgmask))
# Save current mask
if save_masks:
cv2.imwrite(output_dir + '/img_' + ('%03d' % idx) + '.png',
np.reshape(255 * fgmask, (nrows, ncols)))
# Get predictions and compute performance measures
predictions = mask_vec[1:, :]
precision, recall, fscore = evaluateBackgroundEstimation(
predictions, test_gts)
print 'F-score:', fscore
print 'Precision: ', precision
print 'Recall: ', recall
def __init__(self):
self.frame = None
self.video = cv.VideoCapture(0)
self.bgfg = cv.BackgroundSubtractorMOG2()
self.image = None
self.crop_image = None
self.gray = None
self.blurred = None
self.background = None
self.thresh = None
self.contour = None
self.hull = None
self.defects = None
self.mask = None
self.drawing = None
def __init__(self, w_IP, w_Port, w_UN, w_Pass):
self.feed_url = "http://" + w_IP + ":" + w_Port + "/vjpeg.v?user="******"&pwd=" + w_Pass
print self.feed_url
self.startMotionTime = None
self.totalMotionTime = 0
self.totalMotionAcceptable = 25
self.alertLevel = 0
self.alertLevelAcceptable = 3
self.w_Capture = cv2.VideoCapture(self.feed_url)
self.fgbg = cv2.BackgroundSubtractorMOG2()
self.motionTracking2()
def __init__(self):
self.video = None
self.fgMask = None
self.sampleFrame = None
#self.subtractor = cv2.BackgroundSubtractorMOG(history=150, nmixtures=20, backgroundRatio=0.7, noiseSigma=25)
self.subtractor = cv2.BackgroundSubtractorMOG2(150, 200, False)
self.lanes = []
self.lanesImage = []
self.laneContours = []
self.lanePoints = []
self.typeCar = {"small": 0, "medium": 0, "large": 0}
self.totalLane = 0
self.video_name = ''
self.num_frame = 0
self.timer = None
self.total_frame = 0
def __init__(self, movieName):
self.vc = cv2.VideoCapture(movieName)
if not self.vc.isOpened():
print "Error opening video file"
sys.exit(0)
# skipping the first few frames (to where the car is on the road)
for ii in range(500):
self.vc.grab()
self.history = 10
self.varThreshold = 16
self.fgbg = cv2.BackgroundSubtractorMOG2(
history=self.history, varThreshold=self.varThreshold)
self.fgbg.setBool('detectShadows', False)
def MOG2(self,cv_image):
global count
global bgs_mog
count=count+1
print(count)
frame=cv_image
fgmask = bgs_mog.apply(frame)
kernel = np.ones((10,10), np.uint8)
draw = fgmask
contours,hierarchy = cv2.findContours(fgmask, cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE)
for cnt in contours:
print(cv2.contourArea(cnt))
if(1500< cv2.contourArea(cnt) < 30000 ):
x,y,w,h = cv2.boundingRect(cnt)
frame=cv2.rectangle(frame,(x,y),(x+w,y+h),(0,255,0),2)
if not(count % 4):
bgs_mog = cv2.BackgroundSubtractorMOG2(50,20,True)
return frame
def set_fg_mask_method(self, method):
'''
Sets the foreground image mask to the result of a user-specified
foreground segmentation method.
The following methods are supported:
- "simple": no-frills image difference and otsu thresholding.
- "mog": MOG background subtraction algorithm.
- "mog2": MOG2 background subtraction algorithm.
Args:
method: The algorithm to use to create the foreground mask. Should
be either "simple", "mog", or "mog2".
Returns:
True if background and foreground images exist, a valid method
was specified, and foreground segmentation was applied
successfully; false otherwise.
'''
if (self.bg_img is None) or (self.fg_img is None):
return False
if method.lower() == "simple":
self.fg_mask = cv2.absdiff(self.bg_img, self.fg_img)
self.fg_mask = cv2.cvtColor(self.fg_mask, cv2.COLOR_BGR2GRAY)
__, self.fg_mask = cv2.threshold(
self.fg_mask, 0, 255, cv2.THRESH_BINARY + cv2.THRESH_OTSU)
elif method.lower() == "mog":
bg_subtractor = cv2.BackgroundSubtractorMOG()
bg_subtractor.apply(self.bg_img)
self.fg_mask = bg_subtractor.apply(self.fg_img)
elif method.lower() == "mog2":
bg_subtractor = cv2.BackgroundSubtractorMOG2()
bg_subtractor.apply(self.bg_img)
self.fg_mask = bg_subtractor.apply(self.fg_img)
__, self.fg_mask = cv2.threshold(self.fg_mask, 128, 255,
cv2.THRESH_BINARY)
else:
return False
#kernal = np.ones((7,7), np.uint8)
#self.fg_mask = cv2.morphologyEx(self.fg_mask, cv2.MORPH_OPEN, kernal)
return True
def substract_bkg(img, bkgs, fname=None):
"""Substract image background
@param img: input forward image in np array
@param bkgs: a list of background image in np arrays
Keyword arguments:
fname -- specify to output the substracted image
"""
backsub = cv2.BackgroundSubtractorMOG2()
fgmask = None
for bkg in bkgs:
fgmask = backsub.apply(bkg)
fgmask = backsub.apply(img)
if fname is not None and type(fname) is str:
save_img(fgmask, fname=fname)
return cv2.bitwise_and(img, img, mask=fgmask)
def main():
cap = cv2.VideoCapture(0)
#The class implements the Gaussian mixture model background subtraction described in
#http://www.zoranz.net/Publications/zivkovic2004ICPR.pdf.
fgbg = cv2.BackgroundSubtractorMOG2()
while (1):
ret, frame = cap.read()
fgmask = fgbg.apply(frame)
cv2.imshow('frame', fgmask)
k = cv2.waitKey(30) & 0xff
if k == 27:
break
cap.release()
cv2.destroyAllWindows()
def concavityCalculation(res,drawing):
int[][] nodes=new concavityIndexList();
nodes.np.zeroes;
bgModel = cv2.BackgroundSubtractorMOG2(0, bgSubThreshold)
triggerSwitch = False
boolean[] indexes=new indexes(System.in);
index[0]=true;
index[1]=true;
for(i=1;i<nodes.len()-1;i++):
int xdif = nodes[i][0] - nodes[i-1][0]
int ydif = nodes[i][1] - nodes[i-1][1]
int refSlope = ydif/xdif
int thisX= nodes[i+1][0] - nodes[i][0]
int thisY= nodes[i+1][0] - nodes[i][0]
int thisSlope = thisY/thisX
if(thisSlope<=refSlope):
indexes[i+1]=true
else:
indexes[i+1]=false;