def align_images(self, angle_space_mode, angle_space, debug=False):
''' The function takes a serie of images and aligns it against the
template, outputs the resulting images into the aligned_images folder
input:
angle_space_mode = ("fixed"|"tree")
angle_space = tuple (min angle, max angle, precision)
'''
c = 0
if angle_space_mode == "fixed":
self.generate_rotref(angle_space)
elif angle_space_mode == "tree":
self.anglestree = AnglesTree(angle_space, self.template)
for image in self.imgs:
if angle_space_mode == "fixed":
# generate the fourier transform of the image
imgft = ImgFFT(image)
imgft.ft()
# calculate the rotations
smax = 0
idxmax = 0
for idx, temp in enumerate(self.templaterotsft):
corr = temp.correlate(imgft)
s, dx, dy = corr.find_peak(1)
if s > smax:
smax = s
idxmax = idx
angle = float(self.angles_list[idxmax])
elif angle_space_mode == "tree":
angle = self.anglestree.analyze_image(image)
print("angle found", angle)
rotalgimage = deepcopy(image)
rotalgimage.rotate(-angle)
# calculate the shifts
rotalgimageft = ImgFFT(rotalgimage)
rotalgimageft.ft()
corr = rotalgimageft.correlate(self.templateft)
self.corrs.set_image(c, corr)
dx, dy = corr.find_translation(1)
self.shifts.append((dx, dy, angle))
print("shifts:", dx, dy)
rotalgimage.move(dx, dy)
self.algimgs.set_image(c, rotalgimage)
if debug:
print("Correlated image:", c)
c += 1
def analyze_image(self, image):
print("------------ Analysis image ------------")
langle = self.langle
rangle = self.rangle
# reset cc values
for angle in self.angles_nodes:
angle.ccvalue = None
imageft = ImgFFT(image.data)
imageft.ft()
#aprec = langle.angle + self.prec - rangle.angle
while langle.angle + self.prec < rangle.angle:
print("---------", langle.angle + self.prec, rangle.angle,
"-----------")
# test the three angles
print("Analyzing:", langle.angle, rangle.angle)
hangle = (langle.angle + rangle.angle) / 2.
halfangle = None
print("halfangle", hangle)
for anglenode in self.angles_nodes:
if hangle == anglenode.angle:
print("Halfangle already existing!")
halfangle = anglenode
if halfangle is None:
print("Creating halfangle")
halfangle = AngleNode((langle.angle + rangle.angle) / 2.,
self.angles, self.template)
self.angles_nodes.append(halfangle)
if langle.ccvalue is None:
cc1 = langle.template.correlate(imageft)
b1, x, y = cc1.find_peak()
langle.ccvalue = b1
if halfangle.ccvalue is None:
cc2 = halfangle.template.correlate(imageft)
b2, x, y = cc2.find_peak()
halfangle.ccvalue = b2
#cc3 = rangle.template.correlte(imageft)
print("ccs:", langle.ccvalue, halfangle.ccvalue) #, cc3)
if langle.ccvalue >= halfangle.ccvalue:
rangle = halfangle
else:
langle = halfangle
print("Angles: ", langle.angle, rangle.angle)
#aprec = np.sqrt(langle.angle**2 + rangle.angle**2)
return (langle.angle + rangle.angle) / 2.
def init_template(self):
print("creating angle: ", self.angle)
rot = deepcopy(self.inittemplate)
rot.rotate(self.angle)
rotft = ImgFFT(rot)
rotft.ft()
self.template = rotft
self.angles.append(self.angle)
def align_images(self, debug=False):
c = 0
anglestree = AnglesTree(-1, 1, 0.1, self.template)
for image in self.imgs:
angle = anglestree.analyze_image(image)
# # generate the fourier transform of the image
# imgft = ImgFFT(image)
# imgft.ft()
#
# # calculate the rotations
# smax = 0
# idxmax = 0
# for idx, temp in enumerate(self.templaterotsft):
# corr = temp.correlate(imgft)
# s, dx, dy = corr.find_peak(1)
#
# if s > smax:
# smax = s
# idxmax = idx
#
# angle = float(self.angles_list[idxmax])
print("angle found", angle)
rotalgimage = deepcopy(image)
rotalgimage.rotate(-angle)
# calculate the shifts
rotalgimageft = ImgFFT(rotalgimage)
rotalgimageft.ft()
corr = rotalgimageft.correlate(self.templateft)
self.corrs.set_image(c, corr)
dx, dy = corr.find_translation(1)
self.shifts.append((dx, dy, angle))
print("shifts:", dx, dy)
rotalgimage.move(dx, dy)
self.algimgs.set_image(c, rotalgimage)
if debug:
print("Correlated image:", c)
lg.info("correlated image n: " + str(c))
c += 1
def savegif(self, imagepath, size):
''' Given a class imagepath and the size of the images, saves into the
temp folder the associated image
'''
# calculate ft for resizing
imft = ImgFFT(imagepath.image.data)
imft.ft()
im = imft.resize_image(size[0], size[1])
# save resized image
imsave(imagepath.gifname, im.data, format="gif")
def savegif(self, path, gifpath, size):
image = MyImage(path)
image.convert2grayscale()
image.squareit()
# calculate ft for resizing
imft = ImgFFT(image.data)
imft.ft()
im = imft.resize_image(size[0], size[1])
imrgb = MyRGBImg(np.zeros((size[0], size[1], 3)))
for c in range(3):
imrgb.set_channel(im, c)
# save resized image
imsave(gifpath, imrgb.data, format="gif")
def generate_template(self, option, rot_precision=None):
if type(option) is str:
if option == "UseFirstImage":
self.template = self.imgs.get_image(0)
self.templateft = ImgFFT(self.template)
self.templateft.ft()
elif option == "Average":
self.average(False)
self.template = self.avg
self.templateft = ImgFFT(self.template)
self.templateft.ft()
else:
raise TemplateTypeError(option)
elif type(option) == MyImage:
self.template = option
self.templateft = ImgFFT(self.template)
self.templateft.ft()
else:
raise TemplateTypeError(type(option))
lg.info("template created: {0}".format(option))
if type(rot_precision) == tuple:
print("Creating rotation references")
# rot_precision format = (from, to, precision)
frm = rot_precision[0]
to = rot_precision[1]
prec = rot_precision[2]
self.angles_list = np.arange(frm, to, prec)
print("From", frm, "to", to, "precision", prec)
print("Total:", len(self.angles_list), "angles")
self.templaterotsft = NpyFTArray(
(self.subfolders["template_rot"], "template_rot_ft.npy",
len(self.angles_list)))
for i, angle in enumerate(self.angles_list):
print("creating angle: ", angle)
rot = deepcopy(self.template)
rot.rotate(angle)
rotft = ImgFFT(rot)
rotft.ft()
self.templaterotsft.set_image(i, rotft)
def align_images(self, debug=False):
c = 0
for image in self.imgs:
# generate the fourier transform of the image
imgft = ImgFFT(image)
imgft.ft()
# calculate the rotations
smax = 0
idxmax = 0
for idx, temp in enumerate(self.templaterotsft):
corr = temp.correlate(imgft)
s, dx, dy = corr.find_peak(1)
if s > smax:
smax = s
idxmax = idx
print("angle found", self.angles_list[idxmax])
rotalgimage = deepcopy(image)
rotalgimage.rotate(-self.angles_list[idxmax])
# calculate the shifts
rotalgimageft = ImgFFT(rotalgimage)
rotalgimageft.ft()
corr = rotalgimageft.correlate(self.templateft)
self.corrs.append(corr)
dx, dy = corr.find_translation(1)
self.shifts.append((dx, dy))
print("shifts:", dx, dy)
rotalgimage.move(dx, dy)
self.algimgs.append(rotalgimage)
if debug:
print("Correlated image:", c)
lg.info("correlated image n: " + str(c))
c += 1
def generate_template(self, option, rot_precision=None):
if type(option) is str:
if option == "UseFirstImage":
self.template = self.imgs[0]
self.templateft = ImgFFT(self.template)
self.templateft.ft()
elif option == "Average":
self.average(False)
self.template = self.avg
self.templateft = ImgFFT(self.template)
self.templateft.ft()
else:
raise TemplateTypeError(option)
elif type(option) == MyImage:
self.template = option
self.templateft = ImgFFT(self.template)
self.templateft.ft()
else:
raise TemplateTypeError(type(option))
if type(rot_precision) == tuple:
print("Creating rotation references")
# rot_precision format = (from, to, precision)
frm = rot_precision[0]
to = rot_precision[1]
prec = rot_precision[2]
self.angles_list = np.arange(frm, to, prec)
print("From", frm, "to", to, "precision", prec)
print("Total:", len(self.angles_list), "angles")
for angle in self.angles_list:
print("creating angle: ", angle)
rot = deepcopy(self.template)
rot.rotate(angle)
rotft = ImgFFT(rot)
rotft.ft()
self.templaterotsft.append(rotft)
def generate_rotref(self, angle_space):
print("Creating rotation references")
# rot_precision format = (from, to, precision)
frm = angle_space[0]
to = angle_space[1]
prec = angle_space[2]
self.angles_list = np.arange(frm, to, prec)
print("From", frm, "to", to, "precision", prec)
print("Total:", len(self.angles_list), "angles")
self.templaterotsft = NpyFTArray(
(self.subfolders["template_rot"], "template_rot_ft.npy",
len(self.angles_list)))
for i, angle in enumerate(self.angles_list):
print("creating angle: ", angle)
rot = deepcopy(self.template)
rot.rotate(angle)
rotft = ImgFFT(rot)
rotft.ft()
self.templaterotsft.set_image(i, rotft)
class AvgFolderMem(object):
# Initialization functions
def __init__(self, path):
# define the main path
self.path = path
# folder environment variable
self.names = []
self.avgpath = ""
self.subfolders = {}
# create the folder environment
try:
self.makeavgdir()
except FileNotFoundError as e:
print("Folder not found")
except:
print("WTF")
# create log file in the avg folder
lg.basicConfig(filename=join(self.avgpath, 'example.log'),
level=lg.INFO)
# pictures
self.init_imgs = ImageArray(self.path)
self.imgs = NpyImageArray(
(self.subfolders["processed_images"], "proc_imgs.npy",
len(self.init_imgs.paths)))
# initialize variables
self.template = MyImage()
self.templateft = None
self.angles_list = []
self.templaterotsft = None
folder = self.subfolders["aligned_images"]
bname = "algimage.npy"
q = self.imgs.n
self.algimgs = NpyImageArray((folder, bname, q))
folder = self.subfolders["correlation_images"]
bname = "correlation.npy"
q = self.imgs.n
self.corrs = NpyImageArray((folder, bname, q))
self.shifts = []
self.avg = MyImage()
def refine_angles(self, min_angle, max_angle):
# builds a angles tree given the min max angle
pass
def makeavgdir(self):
# create a folder average into the dataset path
# avg
# |- processed_images
# |- aligned_images
# |- correlation_images
# |- results
# |- template_rot
self.avgpath = join(self.path, "avg")
if not isdir(self.avgpath):
mkdir(self.avgpath)
subfolders = [
"processed_images", "aligned_images", "correlation_images",
"results", "template_rot"
]
for folder in subfolders:
self.subfolders[folder] = join(self.avgpath, folder)
if not isdir(self.subfolders[folder]):
mkdir(self.subfolders[folder])
def gather_pictures(self):
for i, image in enumerate(self.init_imgs):
self.imgs.set_image(i, image)
# image operations
def c2gscale(self):
for i, img in enumerate(self.imgs):
img.convert2grayscale()
self.imgs.set_image(i, img)
lg.info("dataset converted to grayscale")
def squareit(self):
for i, img in enumerate(self.imgs):
img.squareit()
self.imgs.set_image(i, img)
lg.info("dataset squared")
def transpose(self):
for i, img in enumerate(self.imgs):
img.transpose()
self.imgs.set_image(i, img)
lg.info("dataset transposed")
def normalize(self):
for i, img in enumerate(self.imgs):
img.normalize()
self.imgs.set_image(i, img)
lg.info("dataset normalized")
def binning(self, n=1):
for i, img in enumerate(self.imgs):
img.binning(n)
self.imgs.set_image(i, img)
lg.info("dataset binned {0} times".format(n))
# template handling
def generate_template(self, option, rot_precision=None):
if type(option) is str:
if option == "UseFirstImage":
self.template = self.imgs.get_image(0)
self.templateft = ImgFFT(self.template)
self.templateft.ft()
elif option == "Average":
self.average(False)
self.template = self.avg
self.templateft = ImgFFT(self.template)
self.templateft.ft()
else:
raise TemplateTypeError(option)
elif type(option) == MyImage:
self.template = option
self.templateft = ImgFFT(self.template)
self.templateft.ft()
else:
raise TemplateTypeError(type(option))
lg.info("template created: {0}".format(option))
if type(rot_precision) == tuple:
print("Creating rotation references")
# rot_precision format = (from, to, precision)
frm = rot_precision[0]
to = rot_precision[1]
prec = rot_precision[2]
self.angles_list = np.arange(frm, to, prec)
print("From", frm, "to", to, "precision", prec)
print("Total:", len(self.angles_list), "angles")
self.templaterotsft = NpyFTArray(
(self.subfolders["template_rot"], "template_rot_ft.npy",
len(self.angles_list)))
for i, angle in enumerate(self.angles_list):
print("creating angle: ", angle)
rot = deepcopy(self.template)
rot.rotate(angle)
rotft = ImgFFT(rot)
rotft.ft()
self.templaterotsft.set_image(i, rotft)
def align_images(self, debug=False):
c = 0
anglestree = AnglesTree(-1, 1, 0.1, self.template)
for image in self.imgs:
angle = anglestree.analyze_image(image)
# # generate the fourier transform of the image
# imgft = ImgFFT(image)
# imgft.ft()
#
# # calculate the rotations
# smax = 0
# idxmax = 0
# for idx, temp in enumerate(self.templaterotsft):
# corr = temp.correlate(imgft)
# s, dx, dy = corr.find_peak(1)
#
# if s > smax:
# smax = s
# idxmax = idx
#
# angle = float(self.angles_list[idxmax])
print("angle found", angle)
rotalgimage = deepcopy(image)
rotalgimage.rotate(-angle)
# calculate the shifts
rotalgimageft = ImgFFT(rotalgimage)
rotalgimageft.ft()
corr = rotalgimageft.correlate(self.templateft)
self.corrs.set_image(c, corr)
dx, dy = corr.find_translation(1)
self.shifts.append((dx, dy, angle))
print("shifts:", dx, dy)
rotalgimage.move(dx, dy)
self.algimgs.set_image(c, rotalgimage)
if debug:
print("Correlated image:", c)
lg.info("correlated image n: " + str(c))
c += 1
def average(self, aligned=True, debug=False):
if aligned:
dataset = self.algimgs
else:
dataset = self.imgs
s = MyImage(np.zeros(dataset[0].data.shape))
for i, picture in enumerate(dataset):
if debug:
print("Averaging picture:", i)
s += picture
self.avg = s / dataset.n
# I/O methods
def get_template_path(self):
return join(self.avgpath, "template.png")
def get_avg_path(self):
return join(self.subfolders["results"], "avg.png")
def save_template(self):
self.template.save(join(self.avgpath, "template.png"))
def load_template(self, filepathname):
self.template.read_from_file(filepathname)
def save_avg(self):
self.avg.save(self.get_avg_path())
def save_shifts(self):
with open(join(self.subfolders["results"], "shifts_log.txt"),
"w") as f:
for shift in self.shifts:
f.write("{0[0]:d} | {0[1]:d} | {0[2]:.3f}\n".format(shift))
lg.info("Shifts saved")
def load_shifts(self):
with open(join(self.subfolders["results"], "shifts_log.txt")) as f:
lines = f.readlines()
self.shifts = []
for line in lines:
sdata = line.split(' | ')
sdata = [d.strip() for d in sdata]
data = [int(sdata[0]), int(sdata[1]), float(sdata[2])]
print(data)
self.shifts.append(data)
class AvgFolder(object):
# Initialization functions
def __init__(self, path):
# define the main path
self.path = path
# folder environment variable
self.names = []
self.avgpath = ""
self.subfolders = {}
# create the folder environment
try:
self.makeavgdir()
except FileNotFoundError as e:
print("Folder not found")
except:
print("WTF")
# create log file in the avg folder
lg.basicConfig(filename=join(self.avgpath, 'example.log'),
level=lg.INFO)
# initialize variables
self.imgs = []
self.template = MyImage()
self.templateft = None
self.angles_list = []
self.templaterotsft = []
self.algimgs = []
self.corrs = []
self.shifts = []
self.avg = MyImage()
def gather_pictures(self):
# for now gather all the files, next check for picture extensions
p = self.path
self.names = [f for f in listdir(p) if isfile(join(p, f))]
for imgname in self.names:
path, name, ext = get_pathname(imgname)
if ext in ['.jpg', '.png']:
imagepath = join(self.path, imgname)
img = MyImage()
img.read_from_file(imagepath)
self.imgs.append(img)
lg.info("Image: {0} imported successfully".format(imagepath))
def makeavgdir(self):
# create a folder average into the dataset path
# avg
# |- processed_images
# |- aligned_images
# |- correlation_images
# |- results
self.avgpath = join(self.path, "avg")
if not isdir(self.avgpath):
mkdir(self.avgpath)
subfolders = [
"processed_images", "aligned_images", "correlation_images",
"results"
]
for folder in subfolders:
self.subfolders[folder] = join(self.avgpath, folder)
if not isdir(self.subfolders[folder]):
mkdir(self.subfolders[folder])
# image operations
def c2gscale(self):
for img in self.imgs:
img.convert2grayscale()
lg.info("dataset converted to grayscale")
def squareit(self):
for img in self.imgs:
img.squareit()
lg.info("dataset squared")
def transpose(self):
for img in self.imgs:
img.transpose()
lg.info("dataset transposed")
def normalize(self):
for img in self.imgs:
img.normalize()
lg.info("dataset normalized")
def binning(self, n=1):
for img in self.imgs:
img.binning(n)
lg.info("dataset binned {0} times".format(n))
# template handling
def generate_template(self, option, rot_precision=None):
if type(option) is str:
if option == "UseFirstImage":
self.template = self.imgs[0]
self.templateft = ImgFFT(self.template)
self.templateft.ft()
elif option == "Average":
self.average(False)
self.template = self.avg
self.templateft = ImgFFT(self.template)
self.templateft.ft()
else:
raise TemplateTypeError(option)
elif type(option) == MyImage:
self.template = option
self.templateft = ImgFFT(self.template)
self.templateft.ft()
else:
raise TemplateTypeError(type(option))
lg.info("template created: {0}".format(option))
if type(rot_precision) == tuple:
print("Creating rotation references")
# rot_precision format = (from, to, precision)
frm = rot_precision[0]
to = rot_precision[1]
prec = rot_precision[2]
self.angles_list = np.arange(frm, to, prec)
print("From", frm, "to", to, "precision", prec)
print("Total:", len(self.angles_list), "angles")
for angle in self.angles_list:
print("creating angle: ", angle)
rot = deepcopy(self.template)
rot.rotate(angle)
rotft = ImgFFT(rot)
rotft.ft()
self.templaterotsft.append(rotft)
def align_images(self, debug=False):
c = 0
for image in self.imgs:
# generate the fourier transform of the image
imgft = ImgFFT(image)
imgft.ft()
# calculate the rotations
smax = 0
idxmax = 0
for idx, temp in enumerate(self.templaterotsft):
corr = temp.correlate(imgft)
s, dx, dy = corr.find_peak(1)
if s > smax:
smax = s
idxmax = idx
print("angle found", self.angles_list[idxmax])
rotalgimage = deepcopy(image)
rotalgimage.rotate(-self.angles_list[idxmax])
# calculate the shifts
rotalgimageft = ImgFFT(rotalgimage)
rotalgimageft.ft()
corr = rotalgimageft.correlate(self.templateft)
self.corrs.append(corr)
dx, dy = corr.find_translation(1)
self.shifts.append((dx, dy))
print("shifts:", dx, dy)
rotalgimage.move(dx, dy)
self.algimgs.append(rotalgimage)
if debug:
print("Correlated image:", c)
lg.info("correlated image n: " + str(c))
c += 1
def average(self, aligned=True):
if aligned:
dataset = self.algimgs
else:
dataset = self.imgs
s = MyImage(np.zeros(dataset[0].data.shape))
for picture in dataset:
s += picture
self.avg = s / len(dataset)
# I/O methods
def save_template(self):
self.template.save(join(self.avgpath, "template.png"))
def load_template(self, filepathname):
self.template.read_from_file(filepathname)
def save_imgs(self):
for i, img in enumerate(self.imgs):
filename, ext = splitext(self.names[i])
img.save(
join(self.subfolders["processed_images"],
"proc_" + filename + ".png"))
lg.info("processed dataset saved, images {0}".format(i))
def laod_imgs(self):
lg.info("Loading processed images")
p = self.subfolders["processed_images"]
names = [f for f in listdir(p) if isfile(join(p, f))]
self.imgs = []
for name in names:
img = MyImage()
img.read_from_file(name)
self.imgs.append(img)
lg.info("Image: {0} imported successfully".format(name))
def save_algimgs(self):
for i, algimg in enumerate(self.algimgs):
filename, ext = splitext(self.names[i])
algimg.save(
join(self.subfolders["aligned_images"],
("alg_" + filename + ".png")))
lg.info("aligned dataset saved, images {0}".format(i))
def laod_algimgs(self):
lg.info("Loading aligned images")
p = self.subfolders["aligned_images"]
names = [f for f in listdir(p) if isfile(join(p, f))]
self.imgs = []
for name in names:
img = MyImage()
img.read_from_file(name)
self.imgs.append(img)
lg.info("Image: {0} imported successfully".format(name))
def save_corrs(self):
for i, corr in enumerate(self.corrs):
filename, ext = splitext(self.names[i])
corr.save(
join(self.subfolders["correlation_images"],
("corr_" + filename + ".png")))
lg.info("correlations dataset saved, images {0}".format(i))
def laod_corrs(self):
lg.info("Loading correlation images")
p = self.subfolders["correlation_images"]
names = [f for f in listdir(p) if isfile(join(p, f))]
self.imgs = []
for name in names:
img = MyImage()
img.read_from_file(name)
self.imgs.append(img)
lg.info("Image: {0} imported successfully".format(name))
def save_avg(self):
self.avg.save(join(self.subfolders["results"], "avg.png"))
def save_shifts(self):
with open(join(self.subfolders["results"], "shifts_log.txt"),
"w") as f:
for shift in self.shifts:
f.write("{0[0]:d} | {0[1]:d}\n".format(shift))
lg.info("Shifts saved")
def load_shifts(self):
with open(join(self.subfolders["results"], "shifts_log.txt")) as f:
lines = f.readlines()
self.shifts = []
for line in lines:
data = line.split(' - ')
data = [int(d.strip()) for d in data]
print(data)
self.shifts.append(data)
class ImageManager:
''' This class manages the images to be elaborated, it works in background
of the GUI to provide the transformations needed and the conversion to gif
'''
def __init__(self, imagepathname):
# set the initial path and extract the approriate information
self.initialpath = imagepathname
path, name, ext = get_pathname(self.initialpath)
self.mainpath = path
self.name = name
self.inimg_name = self.name + ext
# create the directory for the elaboration
self.bufpath = join(self.mainpath, self.name)
if not isdir(self.bufpath):
mkdir(self.bufpath)
# open the source image
self.inimage = ImagePath(self.name, MyImage(), self.bufpath)
# declare the fourier transform
self.ftimage = 0
# TODO
# findppeak on the better cc
# represent it with the tkinter canvas
def init_inimage(self):
# open the source image
self.inimage = ImagePath(self.name, MyImage(), self.bufpath)
self.inimage.image.read_from_file(self.initialpath)
self.inimage.image.convert2grayscale()
self.inimage.image.squareit()
# resize the image and save it in gif format
self.savegif(self.inimage, (500, 500))
def calculate_bandpass(self, inradius, insmooth, outradius, outsmooth):
''' This method calculates the filter and saves the corresponding images
the power spectrum (self.psimage) and the result of the filter
(self.iftimage) in the temp folder
'''
#transfrom the image
self.ftimage = ImgFFT(self.inimage.image)
self.ftimage.ft()
# create bandpass mask
mask = Mask(self.inimage.image.data.shape)
mask.bandpass(inradius, insmooth, outradius, outsmooth)
self.ftimage.apply_mask(mask)
# represent the masked ps
self.ftimage.power_spectrum()
self.psimage = ImagePath(self.name + "_ps", self.ftimage.ps,
self.bufpath)
self.savegif(self.psimage, (500, 500))
# calculate inverse transform
self.ftimage.ift()
self.iftimage = ImagePath(self.name + "ift", self.ftimage.imgifft,
self.bufpath)
self.savegif(self.iftimage, (500, 500))
def savegif(self, imagepath, size):
''' Given a class imagepath and the size of the images, saves into the
temp folder the associated image
'''
# calculate ft for resizing
imft = ImgFFT(imagepath.image.data)
imft.ft()
im = imft.resize_image(size[0], size[1])
# save resized image
imsave(imagepath.gifname, im.data, format="gif")
def rm(self):
''' cleans up the buffer folder containing the gifs files'''
if isdir(self.bufpath):
rmtree(self.bufpath)