def _load_file_weight(self, path):
# Training
if Validator.is_type(path, str):
if os.path.isfile(path):
self.model.load_weights(path)
return True
raise InappropriateArgsError("Model not founded in directory")
raise InappropriateArgsError("Input not valid")
def _load_model(self, path):
if Validator.is_type(path, str):
if os.path.isfile(path):
with open(path, "r") as f:
json_str = f.read()
f.close()
self.model = keras.models.model_from_json(json_str)
return True
raise InappropriateArgsError("Model not founded in directory")
raise InappropriateArgsError("Input not valid")
def __init__(self, pure_sudoku_field):
if Validator.is_type(pure_sudoku_field, np.ndarray):
self.img = pure_sudoku_field
self.sudoku_size = 9
self.height, self.width = self._get_height_width(self.img)
self.error = self.width // 200 # some lines are thicker than others
self.cut_border = 3 # try to avoid border lines of the square with the number
self.model = Char74kClassify()
if self.height != self.width:
raise InappropriateArgsError(
"processing sudoku field! The height and width are not matching"
)
else:
raise InappropriateArgsError("processing sudoku field input: " +
str(pure_sudoku_field))
def __init__(self, parent, text, **kwargs):
if (Validator.is_type(parent, tkinter.Tk) or Validator.is_type(parent, Frame)) and Validator.is_type(text, str):
super().__init__(master=parent, text=text)
self.config(font=(var.LABEL_FONT, var.LABEL_FONT_SIZE), fg=var.LABEL_TEXTCOLOR)
self.grid(kwargs)
else:
raise InappropriateArgsError("creating a label!")
def __init__(self, parent, height=10, width=10, **kwargs):
if Validator.is_positive_number([height, width]) and \
(Validator.is_type(parent, tkinter.Tk) or Validator.is_type(parent, Frame)):
super().__init__(master=parent, height=height, width=width)
self.grid(kwargs)
else:
raise InappropriateArgsError("creating a frame!")
def _img_to_array(self, img):
if Validator.is_type(img, np.ndarray):
img = np.array(img)
img = img.astype('float32')
img /= 255
return img
raise InappropriateArgsError("Input not valid")
def __init__(self, bt1_text, bt1_funct, bt2_text, bt2_funct):
if Validator.is_type([bt1_text, bt2_text], str) and Validator.is_function([bt1_funct, bt2_funct]):
super().__init__()
self.title(var.TITLE_TEXT)
self.title_frame = widgets.Frame(self, row=1, padx=var.BORDER, pady=var.BORDER)
self.title_label = widgets.Title(self.title_frame, var.TITLE_TEXT)
self.info_frame = widgets.Frame(self, row=3, padx=var.BORDER, pady=var.BORDER)
self.info_label = widgets.Label(self.info_frame, "")
self.bot_frame = widgets.Frame(self, row=4, sticky="ew", padx=var.BORDER, pady=var.BORDER)
self.bot_frame.grid_columnconfigure(0, weight=1)
self.bot_frame.grid_columnconfigure(2, weight=1)
self.left_button_frame = widgets.Frame(self.bot_frame, row=0, column=0, sticky="w")
self.right_button_frame = widgets.Frame(self.bot_frame, row=0, column=2, sticky="e")
self.left_button = widgets.Button(self.left_button_frame, bt1_text, bt1_funct)
self.right_button = widgets.Button(self.right_button_frame, bt2_text, bt2_funct)
self.protocol("WM_DELETE_WINDOW", self._on_destroy)
self.resizable(False, False)
else:
raise InappropriateArgsError("a main template!")
def _get_number(self, img):
if Validator.is_type(img, np.ndarray):
img = self._prepare_image_for_recognizing_or_return_0(img)
if Validator.is_type(img, int) and img == 0:
return 0
return int(self.model.classify_image(img))
raise InappropriateArgsError("getting a number! arg: " + str(img))
def _get_cropped_tl_br_point(self, x1, y1, x2, y2):
if Validator.is_positive_number([x1, y1, x2, y2]):
return (x1 + self.cut_border,
y1 + self.cut_border), (x2 - self.cut_border,
y2 - self.cut_border)
raise InappropriateArgsError(
"getting cropped top-left bottom-right point")
def display_message(self, text, after_error_text, color, error_duration=1):
if Validator.is_type([text, after_error_text, color], str) and Validator.is_positive_number(error_duration):
self.info_label.config(fg=color)
self.info_label["text"] = text
return self.after(error_duration * 1000, self.set_info_label, after_error_text)
else:
raise InappropriateArgsError("setting info label text!")
def _get_distance_between_points(self, p1, p2):
if Validator.is_type([p1, p2], tuple) and Validator.is_number(
[p1[0], p1[1], p2[0], p2[1]]):
return math.sqrt((p1[0] - p2[0])**2 + (p1[1] - p2[1])**2)
raise InappropriateArgsError(
"calculating distance between points p1: " + str(p1) +
" and p2: " + str(p2))
def _get_image_from_coords(self, x_error, x, y_error, y, padding):
if Validator.is_positive_number([x_error, x, y_error, y, y_error, padding]) and \
Validator.is_type([x, y, x_error, y_error, padding], int):
x1, y1, x2, y2 = self._get_tr_bl_corners_of_little_square(
x_error, x, y_error, y, padding)
return self._extract_field_square_with_number_image(x1, y1, x2, y2)
raise InappropriateArgsError("getting image from coors!")
def set_info_label(self, text):
if Validator.is_type(text, str) and not isinstance(text, list):
self.info_label.config(fg="black")
self.info_label["text"] = text
return text
else:
raise InappropriateArgsError("setting info label text!")
def _create_white_picture(self, width, height):
if Validator.is_positive_number([width, height]) and Validator.is_type(
[width, height], int):
img = np.zeros((height, width), dtype=np.uint8)
img.fill(255) # must be white
return img
raise InappropriateArgsError("creating white picture")
def __init__(self, parent, text, action, **kwargs):
if (Validator.is_type(parent, tkinter.Tk) or Validator.is_type(parent, Frame)) \
and Validator.is_type(text, str) and Validator.is_function(action):
super().__init__(master=parent, text=text, command=action, width=12)
self.config(bg=var.BUTTON_BACKGROUND, fg=var.BUTTON_TEXTCOLOR)
self.grid(kwargs)
else:
raise InappropriateArgsError("creating a button!")
def _extract_field_square_with_number_image(self, x1, y1, x2, y2):
if Validator.is_positive_number(
[x1, y1, x2, y2]) and Validator.is_type([x1, y1, x2, y2], int):
p1, p4 = self._get_cropped_tl_br_point(x1, y1, x2, y2)
r = cv2.boundingRect(np.array([[p1[0], p1[1]], [p4[0], p4[1]]]))
return self.img[r[1]:r[1] + r[3], r[0]:r[0] + r[2]]
raise InappropriateArgsError(
"extracting field square with number image")
def _get_higher_lower_diff(self, width, height):
if Validator.is_positive_number([width, height]):
higher, lower = max(width, height), min(width, height)
diff = lower * 100
if higher > 0:
diff = (lower / higher) * 100
return higher, lower, diff
raise InappropriateArgsError("getting higher lower difference")
def _get_points_on_line(self, rho, theta):
if Validator.is_number([rho, theta]):
a, b = np.cos(theta), np.sin(theta)
x0, y0 = a * rho, b * rho
return int(x0 + 1000 *
(-b)), int(y0 + 1000 * a), int(x0 - 1000 *
(-b)), int(y0 - 1000 * a)
raise InappropriateArgsError("getting points with rho: " + str(rho) +
" and theta: " + str(theta))
def _get_tr_bl_corners_of_little_square(self, x_error, x, y_error, y,
padding):
if Validator.is_positive_number([x, y, x_error, y_error, padding]):
x_error = self._update_error(x, x_error)
x1, y1 = self._calculate_x_y(x, y, x_error, y_error, padding)
next_point_error = self._update_error(x + 1, x_error)
return x1, y1, x1 + padding + next_point_error, y1 + padding + y_error
raise InappropriateArgsError(
"getting top-right and bottom-left corners of little square")
def _prepare_original_for_recognition(self, img, height, width, x, y,
kernel):
# thicker the number and extract it (hopefully)
if Validator.is_type([img, kernel],
np.ndarray) and Validator.is_positive_number(
[height, width, x, y]):
original = cv2.erode(img, kernel)
return original[y:y + height, x:x + width]
raise InappropriateArgsError("preparing image for recognition!")
def _get_coords_of_angle(self, lines):
if Validator.is_type(lines, np.ndarray):
angles = np.array([line[0][1] for line in lines
]) # returns angles in [0, pi] in radians
# multiply the angles by two and find coordinates of that angle
return np.array(
[[np.cos(2 * angle), np.sin(2 * angle)] for angle in angles],
dtype=np.float32)
raise InappropriateArgsError("getting the coordinates of the angles" +
str(lines))
def _draw_lines_if_true(self, y, padding, y_error, draw):
if not (Validator.is_positive_number([y, padding, y_error])
and Validator.is_type(draw, bool)):
raise InappropriateArgsError("drawing lines")
if draw:
self._draw_line(0, padding * y + y_error, self.width,
padding * y + y_error)
self._draw_line(padding * y + y_error, 0, padding * y + y_error,
self.height)
return True
return False
def get_solution(unsolved_matrix, print_solution=False):
if Validator.is_9x9_integers_field(unsolved_matrix):
solution = SudokuSolver._solve_sudoku(unsolved_matrix)
if solution:
if print_solution:
SudokuSolver.print_sudoku(unsolved_matrix)
return unsolved_matrix
if print_solution:
print("No solution!")
return False # can not solve sudoku
raise InappropriateArgsError("getting solution for sudoku field")
def _hide_smaller_blobs(self, max_point):
if Validator.is_type(max_point,
tuple) and Validator.is_positive_number(
[max_point[0], max_point[1]]):
for y in range(self.height):
row = self.changing_img[y]
for x in range(self.width):
if row[x] == 64 and max_point[0] != x and max_point[
1] != y: # fills gray parts with black
cv2.floodFill(self.changing_img, None, (x, y), 0)
return True
raise InappropriateArgsError("hiding smaller blobs with point: " +
str(max_point))
def _run_kmeans_on_coords(self, lines, k, **kwargs):
if Validator.is_type(lines,
np.ndarray) and Validator.is_positive_number(
k) and Validator.is_type(k, int):
# Define criteria = (type, max_iter, epsilon)
criteria, flags, attempts = self._get_criteria_flags_attempts(
**kwargs)
pts = self._get_coords_of_angle(lines)
# run k-means on the coordinates
labels, centers = cv2.kmeans(pts, k, None, criteria, attempts,
flags)[1:]
return labels.reshape(-1) # transpose to row vector
raise InappropriateArgsError("running k-means on coordinates: " +
str(lines))
def _change_image_like_training_images(self, image, width, height):
# this function adds white corners around the digit. The image is then more similar to the training set images!
if Validator.is_positive_number([width, height]) and Validator.is_type([width, height], int) and \
Validator.is_type(image, np.ndarray) and width >= image.shape[1] and height >= image.shape[0]:
new_img = self._create_white_picture(width,
height) # completely white
smaller_height, smaller_width = self._get_height_width(image)
x_offset, y_offset = self._get_offset(width, height,
smaller_height,
smaller_width)
new_img[y_offset:y_offset + smaller_height,
x_offset:x_offset + smaller_width] = image
return new_img
raise InappropriateArgsError("changing image like training images!")
def _number_unassigned(matrix):
if Validator.is_9x9_integers_field(matrix):
num_unassign = 0
for i in range(0, SIZE):
for j in range(0, SIZE):
if matrix[i][j] == 0: # cell is unassigned
row = i
col = j
num_unassign = 1
a = [row, col, num_unassign]
return a
a = [-1, -1, num_unassign]
return a
raise InappropriateArgsError("number unassigned")
def __init__(self, parent, number, readonly=False, **kwargs):
if Validator.is_positive_number(number) and Validator.is_type(number, int) and number <= 9 and\
(Validator.is_type(parent, tkinter.Tk) or Validator.is_type(parent, Frame)) and \
Validator.is_type(readonly, bool):
self.value = tkinter.StringVar()
self.value.trace('w', self._limit_size)
super().__init__(master=parent, textvariable=self.value)
self.grid(kwargs)
self.config(justify='center', width=var.SUDOKU_SQUARE_SIZE, font=(var.NUMBERS_FONT, var.NUMBERS_SIZE))
if number > 0: # 0 is empty
self.value.set(str(number))
if readonly:
self.config(state='readonly')
else:
raise InappropriateArgsError("creating an entry!")
def _get_longest_line(self, tl, tr, bl, br):
if Validator.is_type([tl, tr, bl, br], tuple) and \
Validator.is_number([tl[0], tl[1], tr[0], tr[1], bl[0], bl[1], br[0], br[1]]):
tltr = self._get_distance_between_points(tl, tr)
tlbl = self._get_distance_between_points(tl, bl)
trbr = self._get_distance_between_points(tr, br)
blbr = self._get_distance_between_points(bl, br)
max_value = max([tltr, tlbl, trbr,
blbr]) # returns the max value of the list
min_value = min([tltr, tlbl, trbr,
blbr]) # returns the min value of the list
if max_value - min_value > max_value * 0.1: # if the difference is grater than 10 % of max value
raise SudokuFieldSizeError(
) # one corner wasn't detected so we should try it again
return max_value
raise InappropriateArgsError("calculating the longest line")
def _prepare_image_for_recognizing_or_return_0(self, img):
if not Validator.is_type(img, np.ndarray):
raise InappropriateArgsError(
"preparing image for recognition! arg: " + str(img))
working_img, original = self._get_transformed_img_and_original(img)
contours = self._get_contours(working_img)
if contours:
x, y, width, height = self._get_x_y_width_height_from_contours(
contours)
higher, lower, diff = self._get_higher_lower_diff(width, height)
if 20 < diff < 90 and height > 7 and width > 7: # some parameters that tries to separate edges from numbers
original = self._prepare_original_for_recognition(
original, height, width, x, y, self._get_kernel(3, 3))
return self._change_image_like_training_images(
original, working_img.shape[1], working_img.shape[0])
return 0 # square is not containing any number
