def snapshot():
global config
img = camera_module.takePhoto()
if config is not None:
img = transform_perspective(img, int(config['x0']), int(config['y0']), int(config['x1']), int(config['y1']), int(config['x2']), int(config['y2']), int(config['x3']), int(config['y3']))
img = img.rotate(int(config['rotation']))
imageBuffer = StringIO.StringIO()
img.save(imageBuffer, format="JPEG")
imageBuffer.seek(0)
return send_file(imageBuffer, mimetype='image/jpeg')
def test_correct_image_result(self):
self.img = transform_perspective(self.img, self.x0, self.y0, self.x1, self.y1, self.x2, self.y2, self.x3, self.y3)
self.img.save('tests/test_data/wb_test_temp.jpg') #Hack given that the histogram of an image changes when saved and opened as jpg probably due to compression
self.img = Image.open('tests/test_data/wb_test_temp.jpg')
os.remove('tests/test_data/wb_test_temp.jpg')
img_comparison = Image.open('tests/test_data/wb_transformed_scaled.jpg')
histogram1 = self.img.histogram()
histogram2 = img_comparison.histogram()
#from http://stackoverflow.com/questions/1927660/compare-two-images-the-python-linux-way
root_mean_square = math.sqrt(reduce(operator.add,
map(lambda a,b: (a-b)**2, histogram1, histogram2))/len(histogram1))
assert root_mean_square == 0
def button_snapshot():
global tp
now = datetime.datetime.now()
tp.print_text('Time submitted: ')
tp.print_text(str(now))
tp.linefeed(2)
# send image to the server
global server_config
if server_config is None:
return 'Server configuration file not found. Perhaps you have not registered this pi yet?', 400
ip = server_config['server']
server_location = 'http://' + server_config['server']
# generate the access code
r = requests.get(server_location + '/generate-access-code/')
code = r.json()['code']
tp.print_text('You have 2 days to process this snapshot before it is ')
tp.print_text('automatically deleted.')
tp.linefeed(2)
tp.print_text('Access code: \n')
tp.justify("C")
tp.double_width(True)
tp.double_height(True)
tp.print_text(code)
tp.double_width(False)
tp.double_height(False)
tp.justify("L")
tp.linefeed(2)
tp.print_text('Your photo will be available at: \n')
tp.print_text('http://' + server_config['server'] + '/')
tp.linefeed(5)
global config
img = camera_module.takePhoto()
if config is not None:
img = transform_perspective(img, int(config['x0']), int(config['y0']), int(config['x1']), int(config['y1']), int(config['x2']), int(config['y2']), int(config['x3']), int(config['y3']))
img = img.rotate(int(config['rotation']))
imageBuffer = StringIO.StringIO()
img.save(imageBuffer, format="JPEG")
imageBuffer.seek(0)
filename = 'button_%i%i%i_%i%i%i' % (now.year,
now.month,
now.day,
now.hour,
now.minute,
now.second)
filename = filename + ".jpg"
files = {'file': (filename, imageBuffer.getvalue())}
data = {'id': server_config['id'], 'code': code}
r = requests.post(server_location + '/pi-upload/', files=files, data=data)
if r.status_code != 200:
tp.print_text('There was an error with the photo:\n')
tp.print_text(str(r.status_code))
tp.linefeed()
tp.print_text(r.text)
elif r.json()['code'] != code:
tp.print_text('There was a code mismatch error.\n')
tp.print_text(code + ' vs ' + r.json()['code'])
return 'Success', 200
def test_correct_dimensions(self):
self.img = transform_perspective(self.img, self.x0, self.y0, self.x1, self.y1, self.x2, self.y2, self.x3, self.y3)
(new_width, new_height) = self.img.size
self.img.save('tests/test_data/wb_test_temp.jpg')
assert self.img.size == self.size, "New image size is the same as computed whiteboard size in pixels"