def __init__(
self,
video_src,
dataset_fn,
face_sz=(130, 130),
cascade_fn="/home/philipp/projects/opencv2/OpenCV-2.3.1/data/haarcascades/haarcascade_frontalface_alt2.xml"
):
self.face_sz = face_sz
self.cam = create_capture(video_src)
ret, self.frame = self.cam.read()
self.detector = CascadedDetector(cascade_fn=cascade_fn,
minNeighbors=5,
scaleFactor=1.1)
# define feature extraction chain & and classifier)
feature = ChainOperator(TanTriggsPreprocessing(), LBP())
classifier = NearestNeighbor(dist_metric=ChiSquareDistance())
# build the predictable model
self.predictor = PredictableModel(feature, classifier)
# read the data & compute the predictor
self.dataSet = DataSet(filename=dataset_fn, sz=self.face_sz)
self.predictor.compute(self.dataSet.data, self.dataSet.labels)
import numpy as np
import matplotlib.cm as cm
import logging, sys
handler = logging.StreamHandler(sys.stdout)
formatter = logging.Formatter(
'%(asctime)s - %(name)s - %(levelname)s - %(message)s')
handler.setFormatter(formatter)
logger = logging.getLogger("facerec")
logger.addHandler(handler)
logger.setLevel(logging.DEBUG)
dataSet = DataSet("/home/philipp/facerec/data/yalefaces_recognition")
feature = Fisherfaces()
classifier = NearestNeighbor(dist_metric=EuclideanDistance(), k=1)
model = PredictableModel(feature=feature, classifier=classifier)
model.compute(dataSet.data, dataSet.labels)
E = []
for i in xrange(min(model.feature.eigenvectors.shape[1], 16)):
e = model.feature.eigenvectors[:, i].reshape(dataSet.data[0].shape)
E.append(minmax_normalize(e, 0, 255, dtype=np.uint8))
subplot(title="Fisherfaces",
# import numpy
import numpy as np
# import matplotlib colormaps
import matplotlib.cm as cm
# import for logging
import logging,sys
# set up a handler for logging
handler = logging.StreamHandler(sys.stdout)
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
handler.setFormatter(formatter)
# add handler to facerec modules
logger = logging.getLogger("facerec")
logger.addHandler(handler)
logger.setLevel(logging.DEBUG)
# load a dataset (e.g. AT&T Facedatabase)
dataSet = DataSet("/home/philipp/facerec/data/at")
# define Fisherfaces as feature extraction method
feature = Fisherfaces()
# define a 1-NN classifier with Euclidean Distance
classifier = NearestNeighbor(dist_metric=EuclideanDistance(), k=1)
# define the model as the combination
model = PredictableModel(feature=feature, classifier=classifier)
# show fisherfaces
model.compute(dataSet.data, dataSet.labels)
# turn the first (at most) 16 eigenvectors into grayscale
# images (note: eigenvectors are stored by column!)
E = []
for i in xrange(min(model.feature.eigenvectors.shape[1], 16)):
e = model.feature.eigenvectors[:,i].reshape(dataSet.data[0].shape)
E.append(minmax_normalize(e,0,255, dtype=np.uint8))
# plot them and store the plot to "python_fisherfaces_fisherfaces.pdf"