def FindExtrinsicCameraParams(imagepoints, objectpoints, KK):
""" Use OpenCV to solve for the affine transformation that matches imagepoints to object points
imagepoints - 2xN array
objectpoints - 3xN array
KK - 3x3 array or 4 element array
"""
imagepoints = array(imagepoints,float)
objectpoints = array(objectpoints,float)
if len(KK.shape) == 1:
cvKK = cv.CreateMat(3,3,cv.CV_32FC1)
cvKK[0,0] = KK[0]; cvKK[0,1] = 0; cvKK[0,2] = KK[2];
cvKK[1,0] = 0; cvKK[1,1] = KK[1]; cvKK[1,2] = KK[3];
cvKK[2,0] = 0; cvKK[2,1] = 0; cvKK[2,2] = 1;
else:
cvKK = cv.fromarray(KK)
cvDist = cv.CreateMat(4,1,cv.CV_32FC1)
cvDist[0,0] = 0; cvDist[1,0] = 0; cvDist[2,0] = 0; cvDist[3,0] = 0;
rvec = cv.CreateMat(3,1,cv.CV_32FC1)
tvec = cv.CreateMat(3,1,cv.CV_32FC1)
object_points = cv.CreateMatHeader(3,objectpoints.shape[0],cv.CV_32FC1)
cv.SetData(object_points,struct.pack('f'*(objectpoints.shape[0]*3),*transpose(objectpoints).flat),4*objectpoints.shape[0])
image_points = cv.CreateMatHeader(2,imagepoints.shape[0],cv.CV_32FC1)
cv.SetData(image_points,struct.pack('f'*(imagepoints.shape[0]*2),*transpose(imagepoints).flat),4*imagepoints.shape[0])
cv.FindExtrinsicCameraParams2(object_points,image_points,cvKK,cvDist,rvec,tvec)
T = matrixFromAxisAngle((rvec[0,0],rvec[1,0],rvec[2,0]))
T[0:3,3] = [tvec[0,0],tvec[1,0],tvec[2,0]]
return T
def __init__(self, type, points3d, descriptors):
if len(descriptors) < 1:
raise detection_error('no descriptor found')
self.type = type
self.points3d = points3d
self.desckdtree = pyANN.KDTree(descriptors)
self.besterr_thresh = 0.001
self.cvKK = cv.fromarray(eye(3))
self.cvDist = cv.fromarray(zeros((4, 1)))
self.rvec = cv.CreateMat(3, 1, cv.CV_32FC1)
self.tvec = cv.CreateMat(3, 1, cv.CV_32FC1)
self.ninitial = 4
self.object_points = cv.CreateMatHeader(3, self.ninitial, cv.CV_32FC1)
self.image_points = cv.CreateMatHeader(2, self.ninitial, cv.CV_32FC1)
def imgmsg_to_cv(self, img_msg, desired_encoding="passthrough"):
"""
Convert a sensor_msgs::Image message to an OpenCV :ctype:`IplImage`.
:param img_msg: A sensor_msgs::Image message
:param desired_encoding: The encoding of the image data, one of the following strings:
* ``"passthrough"``
* one of the standard strings in sensor_msgs/image_encodings.h
:rtype: :ctype:`IplImage`
:raises CvBridgeError: when conversion is not possible.
If desired_encoding is ``"passthrough"``, then the returned image has the same format as img_msg.
Otherwise desired_encoding must be one of the standard image encodings
This function returns an OpenCV :ctype:`IplImage` message on success, or raises :exc:`cv_bridge.CvBridgeError` on failure.
"""
source_type = self.encoding_as_cvtype(img_msg.encoding)
im = cv.CreateMatHeader(img_msg.height, img_msg.width, source_type)
cv.SetData(im, img_msg.data, img_msg.step)
if desired_encoding == "passthrough":
return im
from cv_bridge.boost.cv_bridge_boost import cvtColor
try:
res = cvtColor(im, img_msg.encoding, desired_encoding)
except RuntimeError as e:
raise CvBridgeError(e)
return res
def create_image(self, buffer, create_alpha=True):
self.extension = self.extension or '.tif'
self.no_data_value = None
# FIXME: opencv doesn't support gifs, even worse, the library
# segfaults when trying to decoding a gif. An exception is a
# less drastic measure.
try:
if FORMATS[self.extension] == 'GIF':
raise ValueError("opencv doesn't support gifs")
except KeyError:
pass
if FORMATS[self.extension] == 'TIFF':
self.buffer = buffer
img0 = self.read_tiff(buffer, create_alpha)
else:
imagefiledata = cv.CreateMatHeader(1, len(buffer), cv.CV_8UC1)
cv.SetData(imagefiledata, buffer, len(buffer))
img0 = cv.DecodeImageM(imagefiledata, cv.CV_LOAD_IMAGE_UNCHANGED)
if FORMATS[self.extension] == 'JPEG':
try:
info = JpegFile.fromString(buffer).get_exif()
if info:
self.exif = info.data
self.exif_marker = info.marker
except Exception:
pass
return img0
def set_image_buffer(self, image_buffer):
buffer_len = len(image_buffer)
imagefiledata = cv.CreateMatHeader(1, buffer_len, cv.CV_8UC1)
cv.SetData(imagefiledata, image_buffer, buffer_len)
self.image = cv.DecodeImage(imagefiledata, cv.CV_LOAD_IMAGE_COLOR)
self.size = cv.GetSize(self.image)
self.mode = "BGR"
def get_sample(filename, iscolor=cv.CV_LOAD_IMAGE_COLOR):
image_cache = {}
if not filename in image_cache:
#filedata = filename
imagefiledata = cv.CreateMatHeader(1, len(filedata), cv.CV_8UC1)
cv.SetData(imagefiledata, filedata, len(filedata))
image_cache[filename] = cv.DecodeImageM(imagefiledata, iscolor)
return image_cache[filename]
def CVtoPIL_4Channel(CV_img):
"""converts CV image to PIL image"""
cv_img = cv.CreateMatHeader(
cv.GetSize(img)[1],
cv.GetSize(img)[0], cv.CV_8UC1)
#cv.SetData(cv_img, pil_img.tostring())
pil_img = Image.fromstring("L", cv.GetSize(img), img.tostring())
return pil_img
def handle_image(self, msg):
if self.counter < self.bg_num:
cv_image = self.bridge.imgmsg_to_cv(msg, "bgr8")
self.numpy_bgs.append(numpy.asarray(cv_image))
self.counter += 1
return
if not self.have_ave_bg:
self.have_ave_bg = True
rospy.loginfo('Collected samples for background image averaging')
height = self.numpy_bgs[0].shape[0]
width = self.numpy_bgs[0].shape[1]
n_channels = self.numpy_bgs[0].shape[2]
depth = cv.IPL_DEPTH_8U
size = self.numpy_bgs[0].size
rospy.loginfo(
'height = %d, width = %d, n_channels = %d, depth = %d, size = %d'
% (height, width, n_channels, depth, size))
cov_mat = cv.CreateMat(3, 3, cv.CV_32FC1)
ave_arr = cv.CreateMat(1, 3, cv.CV_32FC1)
# for each pixel in the image
for i in xrange(0, size, 3):
vects = []
# for each image that we sampled
for img in self.numpy_bgs:
mat = cv.CreateMatHeader(1, 3, cv.CV_8UC1)
cv.SetData(mat, img.take([i, i + 1, i + 2]), 3)
vects.append(mat)
cv.CalcCovarMatrix(vects, cov_mat, ave_arr, cv.CV_COVAR_NORMAL)
self.determinants.append(cv.Det(cov_mat))
self.covariances.extend(
numpy.asarray(cov_mat, dtype=numpy.uint8).ravel())
ave_np = numpy.asarray(ave_arr, dtype=numpy.uint8).ravel()
self.averages.extend(ave_np)
sdb = sdg = sdr = 0.0
for img in self.numpy_bgs:
(b, g, r) = img.take([i, i + 1, i + 2])
sdb += pow(b - ave_np[0], 2.0)
sdg += pow(g - ave_np[1], 2.0)
sdr += pow(r - ave_np[2], 2.0)
self.std_devs.append(math.sqrt(sdb / (self.bg_num - 1.0)))
self.std_devs.append(math.sqrt(sdg / (self.bg_num - 1.0)))
self.std_devs.append(math.sqrt(sdr / (self.bg_num - 1.0)))
ave_numpy = numpy.array(self.averages, dtype=numpy.uint8)
self.ave_img = cv.CreateImageHeader((width, height),
cv.IPL_DEPTH_8U, 3)
cv.SetData(self.ave_img, ave_numpy, width * 3)
#cv.ShowImage('win1', self.ave_img)
#cv.ShowImage('win1', self.numpy_bgs[0])
#cv.ShowImage('win2', cv.fromarray(self.numpy_bgs[0]))
#cv.WaitKey(1000)
rospy.loginfo('Computed average background image from samples')
def createImage(self, image_data, width, height, depth, color_code, jpeg=False):
if jpeg:
length = len(image_data)
image = cv.CreateMatHeader(1, length, cv.CV_8UC1)
cv.SetData(image, image_data, length)
return cv.DecodeImage(image)
else:
image = cv.CreateImageHeader((width, height), depth, 4)
cv.SetData(image, image_data)
def imgmsg_to_cv(img_msg, desired_encoding = "passthrough"):
try:
return bridge.imgmsg_to_cv(img_msg, desired_encoding)
except:
cv2_im = bridge.imgmsg_to_cv2(img_msg, desired_encoding)
img_msg = bridge.cv2_to_imgmsg(cv2_im)
source_type = encoding_as_cvtype(img_msg.encoding)
im = cv.CreateMatHeader(img_msg.height, img_msg.width, source_type)
cv.SetData(im, img_msg.data, img_msg.step)
return im
def gaussiannoise(im, mean=0.0, std=15.0):
"""
Applies Gaussian noise to the image. This models sensor noise found in cheap cameras in low light etc.
**Parameters:**
* im - (cvArr) - The source image.
* mean (float) - The mean value of the Gaussian distribution.
* std (float) - The standard deviation of the Gaussian distribution. Larger standard deviation means more noise.
**Returns:**
The noisy image.
.. note::
This function takes a while to run on large images.
.. todo::
* Argument for blue amplification to model bad sensors?
* Use numpy to speed things up?
.. seealso::
:func:`saltandpepper()`
"""
# The first version below takes around 0.4s less time to run on my computer than the version beneath it on a colour image that is about 600x800.
# But I still don't like it...
# Want to change this to make it quicker still and nicer to read.
# Numpy would make this really quick but don't want it be a dependancy.
# Also it's tricky to add the blue amplification using this method.
dst = create(im)
if im.channels == 3:
data = array.array('d', [
random.gauss(mean, std) for i in xrange(im.width * im.height * 3)
])
noise = cv.CreateMatHeader(im.height, im.width, cv.CV_64FC3)
cv.SetData(noise, data, cv.CV_AUTOSTEP)
else:
data = array.array(
'd',
[random.gauss(mean, std) for i in xrange(im.width * im.height)])
noise = cv.CreateMatHeader(im.height, im.width, cv.CV_64FC1)
cv.SetData(noise, data, cv.CV_AUTOSTEP)
cv.Add(im, noise, dst)
return dst
def create_image(self, buffer):
# FIXME: opencv doesn't support gifs, even worse, the library
# segfaults when trying to decoding a gif. An exception is a
# less drastic measure.
if FORMATS[self.extension] == 'GIF':
raise ValueError("opencv doesn't support gifs")
imagefiledata = cv.CreateMatHeader(1, len(buffer), cv.CV_8UC1)
cv.SetData(imagefiledata, buffer, len(buffer))
img0 = cv.DecodeImage(imagefiledata, cv.CV_LOAD_IMAGE_COLOR)
return img0
def loadTemplates(self):
u'''テンプレート画像の読み込み'''
self._templates = []
for i, cvimageinfo in enumerate(config.template.images):
cvmat = cv.CreateMatHeader(cvimageinfo.rows, cvimageinfo.cols, cvimageinfo.type)
cv.SetData(cvmat, cvimageinfo.data)
self._templates.append(A(
image = cv.GetImage(cvmat),
number = i,
result = None,
))
def init(self):
if not config.normalize.points or len(config.normalize.points) < 4:
self._label = tk.Label(self, text=u'まだ正規化が済んでいません。\n正規化を行ってください。')
self._label.pack()
return
if not config.template.images:
config.template.images = [None for i in xrange(10)]
# カメラの準備
self._camera = cv.CaptureFromCAM(config.camera.id)
# カメラ画像表示用Canvasなどの準備
self._cvmat = None
self._image = tk.PhotoImage(width=config.canvas.width,
height=config.canvas.height)
self._canvas = tk.Canvas(self,
width=config.canvas.width,
height=config.canvas.height)
self._canvas.create_image(config.canvas.width / 2,
config.canvas.height / 2,
image=self._image,
tags='image')
self._canvas.pack(expand=1, fill=tk.BOTH)
self._canvas.tag_bind('image', '<ButtonPress-1>', self.mouseDown)
self._canvas.tag_bind('image', '<B1-Motion>', self.mouseDrag)
self._canvas.tag_bind('image', '<ButtonRelease-1>', self.mouseUp)
# ボタン
self._buttons = []
for i in xrange(10):
command = (lambda id: lambda: self.fixation(id))(i)
button = tk.Button(self, text=u'%d' % i, command=command)
button.pack(side=tk.LEFT)
self._buttons.append(button)
# ボタン画像をセーブデータから復元する
cvimageinfo = config.template.images[i]
if cvimageinfo:
cvmat = cv.CreateMatHeader(cvimageinfo.rows, cvimageinfo.cols,
cvimageinfo.type)
cv.SetData(cvmat, cvimageinfo.data)
self.setButtonImage(i, cvmat)
self.allButtonEnable(False)
# マウス座標の情報
self._mouse_down = None
self._mouse_up = None
# 画像をフィルタするための変数
self._clip_rect, self._perspective_points = Points2Rect(
config.normalize.points)
# カメラ画像の更新を1秒間隔にする
self.addTiming(self.showImage, 1)
def scanPic(self, uri):
mr = MediaResource(graph, uri)
jpg, mtime = mr.getImageAndMtime(1000)
mat = cv.CreateMatHeader(1, len(jpg), cv.CV_8UC1)
cv.SetData(mat, jpg, len(jpg))
img = cv.DecodeImage(mat)
grayscale = cv.CreateImage((img.width, img.height), 8, 1)
cv.CvtColor(img, grayscale, cv.CV_RGB2GRAY)
cv.EqualizeHist(grayscale, grayscale)
storage = cv.CreateMemStorage(0)
faces = cv.HaarDetectObjects(
grayscale,
self.cascade,
storage,
1.2, # scaleFactor between scans
3, # minNeighbors
cv.CV_HAAR_DO_CANNY_PRUNING,
(20, 20) # min window size
)
size = cv.GetSize(grayscale)
for f, neighbors in faces:
desc = {
'source': str(uri),
'types': [PHO.Crop],
'tag': 'face',
'x1': f[0] / size[0],
'y1': f[1] / size[1],
'x2': (f[0] + f[2]) / size[0],
'y2': (f[1] + f[3]) / size[1],
# this ought to have a padded version for showing, and
# also the face coords inside that padded version, for
# recognition. Note that the padded one may run into
# the margins
'neighbors': neighbors,
}
alt = restkit.Resource(
uri.replace('http://photo.bigasterisk.com/',
'http://bang:8031/') + "/alt")
resp = alt.post(payload=json.dumps(desc),
headers={
'content-type':
'application/json',
'x-foaf-agent':
'http://bigasterisk.com/tool/scanFace'
})
print resp.status, resp.body_string()
def load_sample(name=None):
if len(argv) > 1:
img0 = cv.LoadImage(argv[1], cv.CV_LOAD_IMAGE_COLOR)
elif name is not None:
try:
img0 = cv.LoadImage(name, cv.CV_LOAD_IMAGE_COLOR)
except IOError:
urlbase = 'https://code.ros.org/svn/opencv/trunk/opencv/samples/c/'
file = name.split('/')[-1]
filedata = urllib2.urlopen(urlbase+file).read()
imagefiledata = cv.CreateMatHeader(1, len(filedata), cv.CV_8UC1)
cv.SetData(imagefiledata, filedata, len(filedata))
img0 = cv.DecodeImage(imagefiledata, cv.CV_LOAD_IMAGE_COLOR)
return img0
def array2cv(a):
dtype2depth = {
'uint8': cv.CV_8UC1,
'int8': cv.CV_8UC1,
'uint16': cv.CV_16UC1,
'int16': cv.IPL_DEPTH_16S,
'int32': cv.IPL_DEPTH_32S,
'float32': cv.IPL_DEPTH_32F,
'float64': cv.IPL_DEPTH_64F,
}
cv_im = cv.CreateMatHeader(a.shape[0], a.shape[1],
dtype2depth[str(a.dtype)])
cv.SetData(cv_im, a.tostring())
return cv_im
def fit(self, data):
m = mean(data, 0)
diff = data - tile(m, (data.shape[0], 1))
area0 = abs(linalg.det(dot(transpose(diff[:, 0:2]), diff[:, 0:2])))
if area0 < 0.00001: # check if point area is large enough
#print 'degenerate 2d data %f'%area0
return None
# have to compute if the 3d points are collinear or not
eigvalues = linalg.eigvalsh(dot(transpose(diff[:, 2:5]), diff[:, 2:5]))
if sum(abs(eigvalues) <= 1e-9
) >= 2: # check if point area is large enough
#print 'degenerate 3d points',eigvalues
return None
if data.shape[0] == self.ninitial:
object_points = self.object_points
image_points = self.image_points
else:
object_points = cv.CreateMatHeader(3, data.shape[0], cv.CV_32FC1)
image_points = cv.CreateMatHeader(2, data.shape[0], cv.CV_32FC1)
cv.SetData(
object_points,
struct.pack('f' * (data.shape[0] * 3),
*transpose(data[:, 2:5]).flat), 4 * data.shape[0])
cv.SetData(
image_points,
struct.pack('f' * (data.shape[0] * 2),
*transpose(data[:, 0:2]).flat), 4 * data.shape[0])
cv.FindExtrinsicCameraParams2(object_points, image_points, self.cvKK,
self.cvDist, self.rvec, self.tvec)
#cv.FindExtrinsicCameraParams2(cv.fromarray(data[:,2:5]),cv.fromarray(data[:,0:2]),self.cvKK,self.cvDist,self.rvec,self.tvec)
T = matrixFromAxisAngle(
(self.rvec[0, 0], self.rvec[1, 0], self.rvec[2, 0]))
T[0:3, 3] = [self.tvec[0, 0], self.tvec[1, 0], self.tvec[2, 0]]
# make sure that texture faces towards the image (ie, z axis has negative z component)
if T[2, 2] < 0:
return None
return T
def array2cvmat(a):
dtype2type = {
'uint8': cv.CV_8UC1,
'int8': cv.CV_8SC1,
'uint16': cv.CV_16UC1,
'int16': cv.CV_16SC1,
'int32': cv.CV_32SC1,
'float32': cv.CV_32FC1,
'float64': cv.CV_64FC1
}
#create matrix headers
rows = a.shape[0]
cols = a.shape[1]
type = dtype2type[str(a.dtype)]
cvmat = cv.CreateMatHeader(rows, cols, type)
#set data
cv.SetData(cvmat, a.tostring(), a.dtype.itemsize * a.shape[1])
return cvmat
def onBtnSaveImageClicked( self, widget ):
if self.lastImage != None:
# Convert to an OpenCV image
cvImage = cv.CreateMatHeader( self.lastImage.height, self.lastImage.width, cv.CV_8UC3 )
cv.SetData( cvImage, self.lastImage.data, self.lastImage.step )
# Convert to BGR as OpenCV likes it
cv.CvtColor( cvImage, cvImage, cv.CV_RGB2BGR )
# Find a name for the image
nameFormatString = "/home/abroun/abroun-ros-pkg/gaffa_apps/object_detector/test_data/saliency/maplin_{0}.png"
imageIdx = 0
nameFound = False
while not nameFound:
imageName = nameFormatString.format( imageIdx )
if not os.path.exists( imageName ):
nameFound = True
else:
imageIdx += 1
# Save the image
cv.SaveImage( imageName, cvImage );
def imgmsg_to_cv(self, img_msg, desired_encoding = "passthrough"):
source_type = self.encoding_as_cvtype(img_msg.encoding)
im = cv.CreateMatHeader(img_msg.height, img_msg.width, source_type)
cv.SetData(im, img_msg.data, img_msg.step)
if desired_encoding == "passthrough":
return im
# Might need to do a conversion. sourcefmt and destfmt can be
# one of GRAY, RGB, BGR, RGBA, BGRA.
sourcefmt = self.encoding_as_fmt(img_msg.encoding)
destfmt = self.encoding_as_fmt(desired_encoding)
destination_type = self.encoding_as_cvtype(desired_encoding)
if sourcefmt == destfmt and source_type == destination_type:
return im
cvtim = cv.CreateMat(img_msg.height, img_msg.width, self.encoding_as_cvtype(desired_encoding))
if sourcefmt == destfmt:
cv.ConvertScale(im, cvtim)
else:
cv.CvtColor(im, cvtim, eval("cv.CV_%s2%s" % (sourcefmt, destfmt)))
return cvtim
try:
# the image generators
image_generator = onipy.OpenNIImageGenerator()
g_context.FindExistingNode(onipy.XN_NODE_TYPE_IMAGE, image_generator)
depth_generator = onipy.OpenNIDepthGenerator()
g_context.FindExistingNode(onipy.XN_NODE_TYPE_DEPTH, depth_generator)
width = depth_generator.XRes()
height = depth_generator.YRes()
# align the images
depth_generator.set_viewpoint(image_generator)
# matrix headers and matrices for computation buffers
current_image_frame = cv.CreateImageHeader(image_generator.Res(), cv.IPL_DEPTH_8U, 3)
current_depth_frame = cv.CreateMatHeader(height, width, cv.CV_16UC1)
for_thresh = cv.CreateMat(height, width, cv.CV_32FC1)
min_thresh = cv.CreateMat(height, width, cv.CV_8UC1)
max_thresh = cv.CreateMat(height, width, cv.CV_8UC1)
and_thresh = cv.CreateMat(height, width, cv.CV_8UC1)
gray = cv.CreateMat(height, width, cv.CV_8UC1)
obj_draw = np.zeros((height, width))
cont_draw = np.zeros((height, width))
# create some matrices for drawing
hist_img = cv.CreateMat(hist_height, width, cv.CV_8UC3)
out = cv.CreateMat(height + hist_height, width, cv.CV_8UC3)
contours = cv.CreateMat(height, width, cv.CV_8UC3)
print 'load object db and create flann index ..'
db = pickle.load(open('../data/pickled.db'))
def create_image(self, buffer):
imagefiledata = cv.CreateMatHeader(1, len(buffer), cv.CV_8UC1)
cv.SetData(imagefiledata, buffer, len(buffer))
img0 = cv.DecodeImage(imagefiledata, cv.CV_LOAD_IMAGE_COLOR)
return img0
cv.Copy(q3, tmp)
cv.Copy(q1, q3)
cv.Copy(tmp, q1)
cv.Copy(q4, tmp)
cv.Copy(q2, q4)
cv.Copy(tmp, q2)
if __name__ == "__main__":
if len(sys.argv) > 1:
im = cv.LoadImage(sys.argv[1], cv.CV_LOAD_IMAGE_GRAYSCALE)
else:
url = 'https://code.ros.org/svn/opencv/trunk/opencv/samples/c/baboon.jpg'
filedata = urllib2.urlopen(url).read()
imagefiledata = cv.CreateMatHeader(1, len(filedata), cv.CV_8UC1)
cv.SetData(imagefiledata, filedata, len(filedata))
im = cv.DecodeImageM(imagefiledata, cv.CV_LOAD_IMAGE_GRAYSCALE)
realInput = cv.CreateImage(cv.GetSize(im), cv.IPL_DEPTH_64F, 1)
imaginaryInput = cv.CreateImage(cv.GetSize(im), cv.IPL_DEPTH_64F, 1)
complexInput = cv.CreateImage(cv.GetSize(im), cv.IPL_DEPTH_64F, 2)
cv.Scale(im, realInput, 1.0, 0.0)
cv.Zero(imaginaryInput)
cv.Merge(realInput, imaginaryInput, None, None, complexInput)
dft_M = cv.GetOptimalDFTSize(im.height - 1)
dft_N = cv.GetOptimalDFTSize(im.width - 1)
dft_A = cv.CreateMat(dft_M, dft_N, cv.CV_64FC2)
def processBag( self, bag ):
FLIP_IMAGE = bool( self.options.frameFlip == "True" )
USING_OPTICAL_FLOW_FOR_MOTION = False
print "frameFlip = ", FLIP_IMAGE
bagFrameIdx = 0
frameIdx = 0
impactFrameIdx = None
# Setup filters
opticalFlowFilter = OpticalFlowFilter(
self.OPTICAL_FLOW_BLOCK_WIDTH, self.OPTICAL_FLOW_BLOCK_HEIGHT,
self.OPTICAL_FLOW_RANGE_WIDTH, self.OPTICAL_FLOW_RANGE_HEIGHT )
motionDetectionFilter = MotionDetectionFilter()
imageFlowFilter = ImageFlowFilter()
residualSaliencyFilter = ResidualSaliencyFilter()
# Process bag file
for topic, msg, t in bag.read_messages():
if self.workCancelled:
# We've been given the signal to quit
break
if msg._type == "sensor_msgs/Image":
bagFrameIdx += 1
if (bagFrameIdx-1)%self.PROCESSED_FRAME_DIFF != 0:
continue
print "Processing image", frameIdx
# Get input image
image = cv.CreateMatHeader( msg.height, msg.width, cv.CV_8UC3 )
cv.SetData( image, msg.data, msg.step )
if FLIP_IMAGE:
cv.Flip( image, None, 1 )
# Convert to grayscale
grayImage = cv.CreateMat( msg.height, msg.width, cv.CV_8UC1 )
cv.CvtColor( image, grayImage, cv.CV_BGR2GRAY )
grayImageNumpPy = np.array( grayImage )
# Calculate optical flow
opticalFlowArrayX, opticalFlowArrayY = \
opticalFlowFilter.calcOpticalFlow( grayImage )
# Detect motion
if USING_OPTICAL_FLOW_FOR_MOTION:
if frameIdx == 0:
motionImage = PyVarFlowLib.createMotionMask(
grayImageNumpPy, grayImageNumpPy )
else:
motionImage = PyVarFlowLib.createMotionMask(
np.array( self.grayScaleImageList[ frameIdx - 1 ] ),
grayImageNumpPy )
else:
motionImage = motionDetectionFilter.calcMotion( grayImage )
# Work out the left most point in the image where motion appears
motionTest = np.copy( motionImage )
cv.Erode( motionTest, motionTest )
if frameIdx == 0:
leftMostMotion = motionImage.shape[ 1 ]
else:
leftMostMotion = self.leftMostMotionList[ frameIdx - 1 ]
leftMostMotionDiff = 0
for i in range( leftMostMotion ):
if motionTest[ :, i ].max() > 0:
leftMostMotionDiff = abs( leftMostMotion - i )
leftMostMotion = i
break
segmentationMask = np.zeros( ( msg.height, msg.width ), dtype=np.uint8 )
FRAMES_BACK = 3
if impactFrameIdx == None:
if leftMostMotionDiff > 18 and leftMostMotion < 0.75*msg.width:
# Found impact frame
impactFrameIdx = frameIdx
else:
PROCESS_IMPACT = False
if PROCESS_IMPACT and frameIdx - impactFrameIdx == FRAMES_BACK:
# Should now have enough info to segment object
impactMotionImage = self.motionImageList[ impactFrameIdx ]
print "Aligning"
postImpactRealFarFlow = imageFlowFilter.calcImageFlow( impactMotionImage, motionImage )
print "Aligning"
postImpactFarFlow = imageFlowFilter.calcImageFlow( impactMotionImage, self.motionImageList[ impactFrameIdx + 2 ] )
print "Aligning"
postImpactNearFlow = imageFlowFilter.calcImageFlow( impactMotionImage, self.motionImageList[ impactFrameIdx + 1 ] )
segmentationMask = np.maximum( np.maximum( np.maximum(
impactMotionImage, postImpactNearFlow[ 3 ] ), postImpactFarFlow[ 3 ] ), postImpactRealFarFlow[ 3 ] )
cv.Dilate( segmentationMask, segmentationMask )
print "Aligning"
preImpactRealFarFlow = imageFlowFilter.calcImageFlow( impactMotionImage, self.motionImageList[ impactFrameIdx - 8 ] )
print "Aligning"
preImpactFarFlow = imageFlowFilter.calcImageFlow( impactMotionImage, self.motionImageList[ impactFrameIdx - 6 ] )
print "Aligning"
preImpactNearFlow = imageFlowFilter.calcImageFlow( impactMotionImage, self.motionImageList[ impactFrameIdx - 4 ] )
subMask = np.maximum( np.maximum(
preImpactRealFarFlow[ 3 ], preImpactFarFlow[ 3 ] ), preImpactNearFlow[ 3 ] )
cv.Erode( subMask, subMask )
cv.Dilate( subMask, subMask )
cv.Dilate( subMask, subMask )
cv.Dilate( subMask, subMask )
subMask[ subMask > 0 ] = 255
diffImage = segmentationMask.astype( np.int32 ) - subMask.astype( np.int32 )
diffImage[ diffImage < 0 ] = 0
diffImage = diffImage.astype( np.uint8 )
cv.Erode( diffImage, diffImage )
#diffImage[ diffImage > 0 ] = 255
#segmentationMask = subMask
segmentationMask = diffImage
#segmentationMask = np.where( diffImage > 128, 255, 0 ).astype( np.uint8 )
# Calculate image flow
#imageFlow = imageFlowFilter.calcImageFlow( motionImage )
## Calculate saliency map
#saliencyMap, largeSaliencyMap = residualSaliencyFilter.calcSaliencyMap( grayImageNumpPy )
#blobMap = np.where( largeSaliencyMap > 128, 255, 0 ).astype( np.uint8 )
#blobMap, numBlobs = PyBlobLib.labelBlobs( blobMap )
#print "found", numBlobs, "blobs"
#largeSaliencyMap = np.where( largeSaliencyMap > 128, 255, 0 ).astype( np.uint8 )
# Threshold the saliency map
#largeSaliencyMap = (largeSaliencyMap > 128).astype(np.uint8) * 255
#cv.AdaptiveThreshold( largeSaliencyMap, largeSaliencyMap, 255 )
# Detect clusters within the saliency map
#NUM_CLUSTERS = 5
#numSamples = np.sum( saliencyMap )
#sampleList = np.ndarray( ( numSamples, 2 ), dtype=np.float32 )
#sampleListIdx = 0
#for y in range( saliencyMap.shape[ 0 ] ):
#for x in range( saliencyMap.shape[ 1 ] ):
#numNewSamples = saliencyMap[ y, x ]
#if numNewSamples > 0:
#sampleList[ sampleListIdx:sampleListIdx+numNewSamples, 0 ] = x
#sampleList[ sampleListIdx:sampleListIdx+numNewSamples, 1 ] = y
#sampleListIdx += numNewSamples
#sampleList[ 0:numSamples/2 ] = ( 20, 20 )
#sampleList[ numSamples/2: ] = ( 200, 200 )
#labelList = np.ndarray( ( numSamples, 1 ), dtype=np.int32 )
#cv.KMeans2( sampleList, NUM_CLUSTERS, labelList,
#(cv.CV_TERMCRIT_ITER | cv.CV_TERMCRIT_EPS, 10, 0.01) )
#saliencyScaleX = float( largeSaliencyMap.shape[ 1 ] ) / saliencyMap.shape[ 1 ]
#saliencyScaleY = float( largeSaliencyMap.shape[ 0 ] ) / saliencyMap.shape[ 0 ]
clusterList = []
#for clusterIdx in range( NUM_CLUSTERS ):
#clusterSamples = sampleList[
#np.where( labelList == clusterIdx )[ 0 ], : ]
#if clusterSamples.size <= 0:
#mean = ( 0.0, 0.0 )
#stdDev = 0.0
#else:
#mean = clusterSamples.mean( axis=0 )
#mean = ( mean[ 0 ]*saliencyScaleX, mean[ 1 ]*saliencyScaleY )
#stdDev = clusterSamples.std()*saliencyScaleX
#clusterList.append( ( mean, stdDev ) )
# Work out the maximum amount of motion we've seen in a single frame so far
#motionCount = motionImage[ motionImage > 0 ].size
#if frameIdx == 0:
#lastMotionCount = 0
#else:
#lastMotionCount = self.maxMotionCounts[ frameIdx - 1 ]
#if motionCount < lastMotionCount:
#motionCount = lastMotionCount
## Work out diffImage
#diffImage = np.array( motionImage, dtype=np.int32 ) \
#- np.array( imageFlow[ 3 ], dtype=np.int32 )
#diffImage = np.array( np.maximum( diffImage, 0 ), dtype=np.uint8 )
# Segment the image
#workingMask = np.copy( motionImage )
#workingMask = np.copy( diffImage )
workingMask = np.copy( segmentationMask )
kernel = cv.CreateStructuringElementEx(
cols=3, rows=3,
anchorX=1, anchorY=1, shape=cv.CV_SHAPE_CROSS )
cv.Erode( workingMask, workingMask, kernel )
cv.Dilate( workingMask, workingMask )
extraExtraMask = np.copy( workingMask )
cv.Dilate( extraExtraMask, extraExtraMask )
cv.Dilate( extraExtraMask, extraExtraMask )
cv.Dilate( extraExtraMask, extraExtraMask )
cv.Dilate( extraExtraMask, extraExtraMask )
cv.Dilate( extraExtraMask, extraExtraMask )
cv.Dilate( extraExtraMask, extraExtraMask )
allMask = np.copy( extraExtraMask )
cv.Dilate( allMask, allMask )
cv.Dilate( allMask, allMask )
cv.Dilate( allMask, allMask )
cv.Dilate( allMask, allMask )
cv.Dilate( allMask, allMask )
cv.Dilate( allMask, allMask )
possibleForeground = workingMask > 0
if workingMask[ possibleForeground ].size >= 100 \
and frameIdx >= 16:
print "Msk size", workingMask[ possibleForeground ].size
print workingMask[ 0, 0:10 ]
fgModel = cv.CreateMat( 1, 5*13, cv.CV_64FC1 )
bgModel = cv.CreateMat( 1, 5*13, cv.CV_64FC1 )
#workingMask[ possibleForeground ] = self.GC_FGD
#workingMask[ possibleForeground == False ] = self.GC_PR_BGD
#workingMask[ : ] = self.GC_PR_BGD
#workingMask[ possibleForeground ] = self.GC_FGD
workingMask[ : ] = self.GC_BGD
workingMask[ allMask > 0 ] = self.GC_PR_BGD
workingMask[ extraExtraMask > 0 ] = self.GC_PR_FGD
workingMask[ possibleForeground ] = self.GC_FGD
if frameIdx == 16:
# Save mask
maskCopy = np.copy( workingMask )
maskCopy[ maskCopy == self.GC_BGD ] = 0
maskCopy[ maskCopy == self.GC_PR_BGD ] = 64
maskCopy[ maskCopy == self.GC_PR_FGD ] = 128
maskCopy[ maskCopy == self.GC_FGD ] = 255
print "Unused pixels", \
maskCopy[ (maskCopy != 255) & (maskCopy != 0) ].size
outputImage = cv.CreateMat( msg.height, msg.width, cv.CV_8UC3 )
cv.CvtColor( maskCopy, outputImage, cv.CV_GRAY2BGR )
cv.SaveImage( "output.png", image );
cv.SaveImage( "outputMask.png", outputImage );
print "Saved images"
#return
#print "Set Msk size", workingMask[ workingMask == self.GC_PR_FGD ].size
imageToSegment = image #self.inputImageList[ frameIdx - FRAMES_BACK ]
imageCopy = np.copy( imageToSegment )
cv.CvtColor( imageCopy, imageCopy, cv.CV_BGR2RGB )
print "Start seg"
cv.GrabCut( imageCopy, workingMask,
(0,0,0,0), fgModel, bgModel, 12, self.GC_INIT_WITH_MASK )
print "Finish seg"
segmentation = np.copy( imageToSegment )
segmentation[ (workingMask != self.GC_PR_FGD) & (workingMask != self.GC_FGD) ] = 0
black = (workingMask != self.GC_PR_FGD) & (workingMask != self.GC_FGD)
#motionImage = np.where( black, 0, 255 ).astype( np.uint8 )
# Refine the segmentation
REFINE_SEG = False
if REFINE_SEG:
motionImageCopy = np.copy( motionImage )
cv.Erode( motionImageCopy, motionImageCopy )
#cv.Erode( motionImageCopy, motionImageCopy )
#cv.Erode( motionImageCopy, motionImageCopy )
workingMask[ motionImageCopy > 0 ] = self.GC_PR_FGD
workingMask[ motionImageCopy == 0 ] = self.GC_PR_BGD
cv.Dilate( motionImageCopy, motionImageCopy )
cv.Dilate( motionImageCopy, motionImageCopy )
cv.Dilate( motionImageCopy, motionImageCopy )
cv.Dilate( motionImageCopy, motionImageCopy )
workingMask[ motionImageCopy == 0 ] = self.GC_BGD
print "Other seg"
cv.GrabCut( imageCopy, workingMask,
(0,0,0,0), fgModel, bgModel, 12, self.GC_INIT_WITH_MASK )
print "Other seg done"
segmentation = np.copy( imageToSegment )
segmentation[ (workingMask != self.GC_PR_FGD) & (workingMask != self.GC_FGD) ] = 0
black = (workingMask != self.GC_PR_FGD) & (workingMask != self.GC_FGD)
motionImage = np.where( black, 0, 255 ).astype( np.uint8 )
else:
segmentation = np.zeros( ( image.height, image.width ), dtype=np.uint8 )
# Save output data
self.inputImageList[ frameIdx ] = image
self.grayScaleImageList[ frameIdx ] = grayImage
self.opticalFlowListX[ frameIdx ] = opticalFlowArrayX
self.opticalFlowListY[ frameIdx ] = opticalFlowArrayY
self.motionImageList[ frameIdx ] = motionImage
self.segmentationList[ frameIdx ] = segmentation
self.segmentationMaskList[ frameIdx ] = segmentationMask
#self.maxMotionCounts[ frameIdx ] = motionCount
#self.imageFlowList[ frameIdx ] = imageFlow
#self.saliencyMapList[ frameIdx ] = largeSaliencyMap
#self.saliencyClusterList[ frameIdx ] = clusterList
self.leftMostMotionList[ frameIdx ] = leftMostMotion
frameIdx += 1
self.numFramesProcessed += 1
if not self.workCancelled:
SAVE_MOTION_IMAGES = True
BASE_MOTION_IMAGE_NAME = self.scriptPath + "/../../test_data/motion_images/motion_{0:03}.png"
if SAVE_MOTION_IMAGES and len( self.motionImageList ) > 0:
width = self.motionImageList[ 0 ].shape[ 1 ]
height = self.motionImageList[ 0 ].shape[ 0 ]
colourImage = np.zeros( ( height, width, 3 ), dtype=np.uint8 )
for frameIdx, motionImage in enumerate( self.motionImageList ):
colourImage[ :, :, 0 ] = motionImage
colourImage[ :, :, 1 ] = motionImage
colourImage[ :, :, 2 ] = motionImage
outputName = BASE_MOTION_IMAGE_NAME.format( frameIdx + 1 )
cv.SaveImage( outputName, colourImage )
# Recalculate impactFrameIdx
width = self.motionImageList[ 0 ].shape[ 1 ]
totalMotionDiff = 0
maxMotionDiff = 0
impactFrameIdx = None
for motionIdx in range( 1, len( self.leftMostMotionList ) ):
motionDiff = abs( self.leftMostMotionList[ motionIdx ] \
- self.leftMostMotionList[ motionIdx - 1 ] )
totalMotionDiff += motionDiff
if motionDiff > maxMotionDiff and totalMotionDiff > 0.5*width:
maxMotionDiff = motionDiff
impactFrameIdx = motionIdx
if maxMotionDiff <= 18:
impactFrameIdx = None
if impactFrameIdx != None:
preMotionImages = []
postMotionImages = []
impactMotionImage = None
NUM_FRAMES_BEFORE = 3
prefix = self.options.outputPrefix
if prefix != "":
prefix += "_"
BASE_MOTION_IMAGE_NAME = self.scriptPath + "/../../test_data/impact_images/" + prefix + "motion_{0:03}.png"
START_MOTION_IMAGE_NAME = self.scriptPath + "/../../test_data/impact_images/" + prefix + "start_motion.png"
START_IMAGE_NAME = self.scriptPath + "/../../test_data/impact_images/" + prefix + "start.png"
IMPACT_IMAGE_NAME = self.scriptPath + "/../../test_data/impact_images/" + prefix + "impact.png"
SEGMENTATION_IMAGE_NAME = self.scriptPath + "/../../test_data/impact_images/" + prefix + "segmentation.png"
NUM_FRAMES_AFTER = 3
width = self.motionImageList[ 0 ].shape[ 1 ]
height = self.motionImageList[ 0 ].shape[ 0 ]
colourImage = np.zeros( ( height, width, 3 ), dtype=np.uint8 )
for frameIdx in range( impactFrameIdx - NUM_FRAMES_BEFORE,
impactFrameIdx + NUM_FRAMES_AFTER + 1 ):
motionImage = self.motionImageList[ frameIdx ]
if frameIdx < impactFrameIdx:
preMotionImages.append( motionImage )
elif frameIdx == impactFrameIdx:
impactMotionImage = motionImage
else: # frameIdx > impactFrameIdx
postMotionImages.append( motionImage )
colourImage[ :, :, 0 ] = motionImage
colourImage[ :, :, 1 ] = motionImage
colourImage[ :, :, 2 ] = motionImage
outputName = BASE_MOTION_IMAGE_NAME.format( frameIdx - impactFrameIdx )
cv.SaveImage( outputName, colourImage )
motionDetectionFilter.calcMotion( self.grayScaleImageList[ 0 ] )
startMotionImage = motionDetectionFilter.calcMotion(
self.grayScaleImageList[ impactFrameIdx ] )
colourImage[ :, :, 0 ] = startMotionImage
colourImage[ :, :, 1 ] = startMotionImage
colourImage[ :, :, 2 ] = startMotionImage
cv.SaveImage( START_MOTION_IMAGE_NAME, colourImage )
cv.CvtColor( self.inputImageList[ 0 ], colourImage, cv.CV_RGB2BGR )
cv.SaveImage( START_IMAGE_NAME, colourImage )
cv.CvtColor( self.inputImageList[ impactFrameIdx ], colourImage, cv.CV_RGB2BGR )
cv.SaveImage( IMPACT_IMAGE_NAME, colourImage )
print "Segmenting..."
segmentation = self.produceSegmentation( self.inputImageList[ 0 ],
impactMotionImage, preMotionImages, postMotionImages )
cv.CvtColor( segmentation, colourImage, cv.CV_RGB2BGR )
cv.SaveImage( SEGMENTATION_IMAGE_NAME, colourImage )
self.refreshGraphDisplay()
print "Finished processing bag file"
if bool( self.options.quitAfterFirstSegmentation == "True" ):
print "Trying to quit"
self.onWinMainDestroy( None )
else:
print "Not trying to quit so neeah"
def imgmsg_to_cv(self, img_msg, desired_encoding = "passthrough"):
"""
Convert a sensor_msgs::Image message to an OpenCV :ctype:`IplImage`.
:param img_msg: A sensor_msgs::Image message
:param desired_encoding: The encoding of the image data, one of the following strings:
* ``"passthrough"``
* ``"rgb8"``
* ``"rgba8"``
* ``"bgr8"``
* ``"bgra8"``
* ``"mono8"``
* ``"mono16"``
:rtype: :ctype:`IplImage`
:raises CvBridgeError: when conversion is not possible.
If desired_encoding is ``"passthrough"``, then the returned image has the same format as img_msg.
Otherwise desired_encoding must be one of the strings "rgb8", "bgr8", "rgba8", "bgra8", "mono8" or "mono16",
in which case this method converts the image using
:func:`CvtColor`
(if necessary) and the returned image has a type as follows:
``CV_8UC3``
for "rgb8", "bgr8"
``CV_8UC4``
for "rgba8", "bgra8"
``CV_8UC1``
for "mono8"
``CV_16UC1``
for "mono16"
This function returns an OpenCV :ctype:`IplImage` message on success, or raises :exc:`opencv_latest.cv_bridge.CvBridgeError` on failure.
"""
source_type = self.encoding_as_cvtype(img_msg.encoding)
im = cv.CreateMatHeader(img_msg.height, img_msg.width, source_type)
cv.SetData(im, img_msg.data, img_msg.step)
if desired_encoding == "passthrough":
return im
# Might need to do a conversion. sourcefmt and destfmt can be
# one of GRAY, RGB, BGR, RGBA, BGRA.
sourcefmt = self.encoding_as_fmt(img_msg.encoding)
destfmt = self.encoding_as_fmt(desired_encoding)
source_type = self.encoding_as_cvtype(img_msg.encoding)
destination_type = self.encoding_as_cvtype(desired_encoding)
if sourcefmt == destfmt and source_type == destination_type:
return im
# First want to make sure that source depth matches destination depth
if source_type != destination_type:
# im2 is the intermediate image. It has the same # channels as source_type,
# but the depth of destination_type.
# XXX - these macros were missing from OpenCV Python, so roll our own here:
CV_CN_SHIFT = 3
def CV_MAKETYPE(depth,cn):
return cv.CV_MAT_DEPTH(depth) + ((cn - 1) << CV_CN_SHIFT)
im2_type = CV_MAKETYPE(destination_type, cv.CV_MAT_CN(source_type))
im2 = cv.CreateMat(img_msg.height, img_msg.width, im2_type)
cv.ConvertScale(im, im2)
else:
im2 = im
if sourcefmt != destfmt:
im3 = cv.CreateMat(img_msg.height, img_msg.width, destination_type)
cv.CvtColor(im2, im3, eval("cv.CV_%s2%s" % (sourcefmt, destfmt)))
else:
im3 = im2
return im3
def old_GeneratePerceptualHash(path):
# I think what I should be doing here is going cv2.imread( path, flags = cv2.CV_LOAD_IMAGE_GRAYSCALE )
# then efficiently resize
thumbnail = GeneratePILImage(path)
# convert to 32 x 32 greyscale
if thumbnail.mode == 'P':
thumbnail = thumbnail.convert(
'RGBA'
) # problem with some P images converting to L without RGBA step in between
if thumbnail.mode == 'RGBA':
# this is some code i picked up somewhere
# another great example of PIL failing; it turns all alpha to pure black on a RGBA->RGB
thumbnail.load()
canvas = PILImage.new('RGB', thumbnail.size, (255, 255, 255))
canvas.paste(thumbnail, mask=thumbnail.split()[3])
thumbnail = canvas
thumbnail = thumbnail.convert('L')
thumbnail = thumbnail.resize((32, 32), PILImage.ANTIALIAS)
# convert to mat
numpy_thumbnail_8 = cv.CreateMatHeader(32, 32, cv.CV_8UC1)
cv.SetData(numpy_thumbnail_8, thumbnail.tostring())
numpy_thumbnail_32 = cv.CreateMat(32, 32, cv.CV_32FC1)
cv.Convert(numpy_thumbnail_8, numpy_thumbnail_32)
# compute dct
dct = cv.CreateMat(32, 32, cv.CV_32FC1)
cv.DCT(numpy_thumbnail_32, dct, cv.CV_DXT_FORWARD)
# take top left 8x8 of dct
dct = cv.GetSubRect(dct, (0, 0, 8, 8))
# get mean of dct, excluding [0,0]
mask = cv.CreateMat(8, 8, cv.CV_8U)
cv.Set(mask, 1)
mask[0, 0] = 0
channel_averages = cv.Avg(dct, mask)
average = channel_averages[0]
# make a monochromatic, 64-bit hash of whether the entry is above or below the mean
bytes = []
for i in range(8):
byte = 0
for j in range(8):
byte <<= 1 # shift byte one left
value = dct[i, j]
if value > average: byte |= 1
bytes.append(byte)
answer = str(bytearray(bytes))
# we good
return answer
imageIdx = 0
for topic, msg, t in bag.read_messages():
if msg._type == "sensor_msgs/Image":
if msg.encoding == "rgb8" or msg.encoding == "bgr8":
if imageIdx > 0:
sys.stdout.write("\r")
sys.stdout.write("Processing image " + str(imageIdx))
sys.stdout.flush()
# Extract the image using OpenCV
curImage = cv.CreateMatHeader(msg.height, msg.width,
cv.CV_8UC3)
cv.SetData(curImage, msg.data, msg.step)
npImage = np.array(curImage, dtype=np.uint8)
if frameAcc == None:
frameAcc = np.zeros((msg.height, msg.width),
dtype=np.float32)
# Convert the image to grayscale and add it to the accumulator
frameAcc = frameAcc \
+ 0.299*npImage[ :, :, 0 ].astype( np.float32 ) \
+ 0.587*npImage[ :, :, 1 ].astype( np.float32 ) \
+ 0.114*npImage[ :, :, 2 ].astype( np.float32 )
imageIdx += 1