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Програмиране с Python

Курс във Факултета по Математика и Информатика към СУ

Решение на Работа с картинки от Николай Мантаров

Обратно към всички решения

Към профила на Николай Мантаров

Резултати

  • 10 точки от тестове
  • 0 бонус точки
  • 10 точки общо
  • 12 успешни тест(а)
  • 0 неуспешни тест(а)

Код

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from collections import defaultdict


def rotate_left(image):
    image1 = [list(col) for col in zip(*image)]
    new_image = image1[::-1]
    return new_image


def rotate_right(image):
    image1 = image[::-1]
    new_image = [list(col) for col in zip(*image1)]
    return new_image


def pixel(how, pix, coef):
    if how == 0:
        return (255 - pix[0], 255 - pix[1], 255 - pix[2])
    if how == 1:
        pix_0 = int(coef * (255 - pix[0]))
        pix_1 = int(coef * (255 - pix[1]))
        pix_2 = int(coef * (255 - pix[2]))
        return (pix[0] + pix_0, pix[1] + pix_1, pix[2] + pix_2)
    if how == 2:
        a = int((1 - coef) * pix[0])
        b = int((1 - coef) * pix[1])
        c = int((1 - coef) * pix[2])
        return (a, b, c)


def invert(image):
    res = [[pixel(0, col, 0) for col in row] for row in image]
    return res


def lighten(image, coef):
    new_image = [[pixel(1, col, coef) for col in row] for row in image]
    return new_image


def darken(image, coef):
    new_image = [[pixel(2, col, coef) for col in row] for row in image]
    return new_image


def create_histogram(image):
    red_clr = defaultdict(int)
    green_clr = defaultdict(int)
    blue_clr = defaultdict(int)
    for row in image:
        for red, green, blue in row:
            red_clr[red] += 1
            green_clr[green] += 1
            blue_clr[blue] += 1
    histogram = {'red': red_clr, 'green': green_clr, 'blue': blue_clr}
    return histogram

Лог от изпълнението

............
----------------------------------------------------------------------
Ran 12 tests in 0.084s

OK

История (2 версии и 1 коментар)

Николай обнови решението на 10.03.2016 00:10 (преди почти 2 години)

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def rotate_left(image):
    new_image = []
    for column in range(len(image[0])-1, -1, -1):
        to_push = []
        for row in range(len(image)):
            to_push.append(image[row][column])
        new_image.append(to_push)
    return new_image


def rotate_right(image):
    new_image = []
    for column in range(len(image[0])):
        to_push = []
        for row in range(len(image)-1, -1, -1):
            to_push.append(image[row][column])
        new_image.append(to_push)
    return new_image


def invert(image):
    new_image = []
    for row in image:
        to_push = []
        for element in row:
            a = (255 - element[0], 255 - element[1], 255 - element[2])
            to_push.append(a)
        new_image.append(to_push)
    return new_image


def lighten(image, coef):
    new_image = []
    for row in image:
        to_push = []
        for element in row:
            a = int(element[0] + coef*(255 - element[0]))
            b = int(element[1] + coef*(255 - element[1]))
            c = int(element[2] + coef*(255 - element[2]))
            to_push.append((a, b, c))
        new_image.append(to_push)
    return new_image


def darken(image, coef):
    new_image = []
    for row in image:
        to_push = []
        for element in row:
            a = int((1-coef) * element[0])
            b = int((1-coef) * element[1])
            c = int((1-coef) * element[2])
            to_push.append((a, b, c))
        new_image.append(to_push)
    return new_image


def create_histogram(image):
    histogram = {'red': {}, 'green': {}, 'blue': {}}
    for row in image:
        for color in row:
            red = color[0]
            green = color[1]
            blue = color[2]
            if red in histogram['red']:
                histogram['red'][red] += 1
            else:
                histogram['red'][red] = 1
            if green in histogram['green']:
                histogram['green'][green] += 1
            else:
                histogram['green'][green] = 1
            if blue in histogram['blue']:
                histogram['blue'][blue] += 1
            else:
                histogram['blue'][blue] = 1
    return histogram

Николай обнови решението на 12.03.2016 21:03 (преди почти 2 години)

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from collections import defaultdict


def rotate_left(image):
    image1 = [list(col) for col in zip(*image)]
    new_image = image1[::-1]
    return new_image


def rotate_right(image):
    image1 = image[::-1]
    new_image = [list(col) for col in zip(*image1)]
    return new_image


def pixel(how, pix, coef):
    if how == 0:
        return (255 - pix[0], 255 - pix[1], 255 - pix[2])
    if how == 1:
        pix_0 = int(coef * (255 - pix[0]))
        pix_1 = int(coef * (255 - pix[1]))
        pix_2 = int(coef * (255 - pix[2]))
        return (pix[0] + pix_0, pix[1] + pix_1, pix[2] + pix_2)
    if how == 2:
        a = int((1 - coef) * pix[0])
        b = int((1 - coef) * pix[1])
        c = int((1 - coef) * pix[2])
        return (a, b, c)


def invert(image):
    res = [[pixel(0, col, 0) for col in row] for row in image]
    return res


def lighten(image, coef):
    new_image = [[pixel(1, col, coef) for col in row] for row in image]
    return new_image


def darken(image, coef):
    new_image = [[pixel(2, col, coef) for col in row] for row in image]
    return new_image


def create_histogram(image):
    red_clr = defaultdict(int)
    green_clr = defaultdict(int)
    blue_clr = defaultdict(int)
    for row in image:
        for red, green, blue in row:
            red_clr[red] += 1
            green_clr[green] += 1
            blue_clr[blue] += 1
    histogram = {'red': red_clr, 'green': green_clr, 'blue': blue_clr}
    return histogram