python实现马赛克拼图

直接上代码!
代码如下：
#!/usr/local/bin/python3

–– coding:utf8 ––

import getopt
import sys
import os

import logging
from PIL import Image
from multiprocessing import Process, Queue, cpu_count

TILE_SIZE = 30 # 素材图片大小
TILE_MATCH_RES = 10 #配置指数 ，值越大匹配度越高，执行时间越长
ENLARGEMENT = 4 # 生成的图片是原始图片的多少倍

TILE_BLOCK_SIZE = int(TILE_SIZE / max(min(TILE_MATCH_RES, TILE_SIZE), 1))
WORKER_COUNT = max(cpu_count() - 1, 1)
EOQ_VALUE = None
WARN_INFO = “”" 缺少有效参数
参数:
-i [–image] : 原图片地址
-t [–tiles_dir] : 素材目录地址
-o [–outfile] : 输出文件地址 【可选】
“”"

class TileProcessor:
def init(self, tiles_directory):
self.tiles_directory = tiles_directory

def __process_tile(self, tile_path):
    try:
        img = Image.open(tile_path)
        # tiles must be square, so get the largest square that fits inside the image
        w = img.size[0]
        h = img.size[1]
        min_dimension = min(w, h)
        w_crop = (w - min_dimension) / 2
        h_crop = (h - min_dimension) / 2
        img = img.crop((w_crop, h_crop, w - w_crop, h - h_crop))
        large_tile_img = img.resize((TILE_SIZE, TILE_SIZE), Image.ANTIALIAS)
        small_tile_img = img.resize((int(TILE_SIZE / TILE_BLOCK_SIZE), int(TILE_SIZE / TILE_BLOCK_SIZE)),
                                    Image.ANTIALIAS)
        return (large_tile_img.convert('RGB'), small_tile_img.convert('RGB'))
    except Exception as e:
        logging.warning(e)
        return (None, None)

def get_tiles(self):
    large_tiles = []
    small_tiles = []

    logging.info('从 \'%s\' 获取图片素材...' % self.tiles_directory)

    # search the tiles directory recursively
    for root, subFolders, files in os.walk(self.tiles_directory):
        for tile_name in files:
            tile_path = os.path.join(root, tile_name)
            large_tile, small_tile = self.__process_tile(tile_path)
            logging.debug(large_tile)
            logging.debug(small_tile)
            if large_tile:
                large_tiles.append(large_tile)
                small_tiles.append(small_tile)

    logging.info('读取素材 %s 完成.' % len(large_tiles))

    return (large_tiles, small_tiles)

class TargetImage:
def init(self, image_path):
self.image_path = image_path

def get_data(self):
    logging.info('处理主图片...')
    img = Image.open(self.image_path)
    w = img.size[0] * ENLARGEMENT
    h = img.size[1] * ENLARGEMENT
    large_img = img.resize((w, h), Image.ANTIALIAS)
    w_diff = (w % TILE_SIZE) / 2
    h_diff = (h % TILE_SIZE) / 2

    # if necesary, crop the image slightly so we use a whole number of tiles horizontally and vertically
    if w_diff or h_diff:
        large_img = large_img.crop((w_diff, h_diff, w - w_diff, h - h_diff))

    small_img = large_img.resize((int(w / TILE_BLOCK_SIZE), int(h / TILE_BLOCK_SIZE)), Image.ANTIALIAS)

    image_data = (large_img.convert('RGB'), small_img.convert('RGB'))

    logging.info('主图片处理完成.')

    return image_data

class TileFitter:
def init(self, tiles_data):
self.tiles_data = tiles_data

def __get_tile_diff(self, t1, t2, bail_out_value):
    diff = 0
    for i in range(len(t1)):
        # diff += (abs(t1[i][0] - t2[i][0]) + abs(t1[i][1] - t2[i][1]) + abs(t1[i][2] - t2[i][2]))
        diff += ((t1[i][0] - t2[i][0]) ** 2 + (t1[i][1] - t2[i][1]) ** 2 + (t1[i][2] - t2[i][2]) ** 2)
        if diff > bail_out_value:
            # we know already that this isnt going to be the best fit, so no point continuing with this tile
            return diff
    return diff

def get_best_fit_tile(self, img_data):
    best_fit_tile_index = None
    min_diff = sys.maxsize
    tile_index = 0

    # go through each tile in turn looking for the best match for the part of the image represented by 'img_data'
    for tile_data in self.tiles_data:
        diff = self.__get_tile_diff(img_data, tile_data, min_diff)
        # logging.info(diff)
        if diff < min_diff:
            min_diff = diff
            best_fit_tile_index = tile_index
        tile_index += 1

    return best_fit_tile_index

def fit_tiles(work_queue, result_queue, tiles_data):
# this function gets run by the worker processes, one on each CPU core
tile_fitter = TileFitter(tiles_data)

while True:
    try:
        img_data, img_coords = work_queue.get(True)
        if img_data == EOQ_VALUE:
            break
        tile_index = tile_fitter.get_best_fit_tile(img_data)
        result_queue.put((img_coords, tile_index))
    except KeyboardInterrupt:
        pass

# let the result handler know that this worker has finished everything
result_queue.put((EOQ_VALUE, EOQ_VALUE))

class ProgressCounter:
def init(self, total):
self.total = total
self.counter = 0

def update(self):
    self.counter += 1
    sys.stdout.write(
        "进度: %s%% %s" % ((100 * self.counter / self.total), "\r"))

    # sys.stdout.write("Progress: %s%% %s" % (100 * self.counter / self.total, "\r"))

sys.stdout.flush()

class MosaicImage:
def init(self, original_img, outfile):
self.image = Image.new(original_img.mode, original_img.size)
self.x_tile_count = int(original_img.size[0] / TILE_SIZE)
self.y_tile_count = int(original_img.size[1] / TILE_SIZE)
self.total_tiles = self.x_tile_count * self.y_tile_count
self.outfile = outfile

def add_tile(self, tile_data, coords):
    img = Image.new('RGB', (TILE_SIZE, TILE_SIZE))
    img.putdata(tile_data)
    self.image.paste(img, coords)

def save(self, path):
    self.image.save(path)

def build_mosaic(result_queue, all_tile_data_large, original_img_large, outfile):
mosaic = MosaicImage(original_img_large, outfile)

active_workers = WORKER_COUNT
while True:
    try:
        img_coords, best_fit_tile_index = result_queue.get()

        if img_coords == EOQ_VALUE:
            active_workers -= 1
            if not active_workers:
                break
        else:
            tile_data = all_tile_data_large[best_fit_tile_index]
            mosaic.add_tile(tile_data, img_coords)

    except KeyboardInterrupt:
        pass

mosaic.save(mosaic.outfile)
logging.info('============ 生成成功 ============')

def compose(original_img, tiles, outfile):
logging.info(‘生成图片中,按下 Ctrl-C 中断…’)
original_img_large, original_img_small = original_img
tiles_large, tiles_small = tiles

mosaic = MosaicImage(original_img_large, outfile)

all_tile_data_large = list(map(lambda tile: list(tile.getdata()), tiles_large))
all_tile_data_small = list(map(lambda tile: list(tile.getdata()), tiles_small))

work_queue = Queue(WORKER_COUNT)
result_queue = Queue()

try:
    # start the worker processes that will build the mosaic image
    Process(target=build_mosaic, args=(result_queue, all_tile_data_large, original_img_large, outfile)).start()

    # start the worker processes that will perform the tile fitting
    for n in range(WORKER_COUNT):
        Process(target=fit_tiles, args=(work_queue, result_queue, all_tile_data_small)).start()

    progress = ProgressCounter(mosaic.x_tile_count * mosaic.y_tile_count)
    for x in range(mosaic.x_tile_count):
        for y in range(mosaic.y_tile_count):
            large_box = (x * TILE_SIZE, y * TILE_SIZE, (x + 1) * TILE_SIZE, (y + 1) * TILE_SIZE)
            small_box = (
                x * TILE_SIZE / TILE_BLOCK_SIZE, y * TILE_SIZE / TILE_BLOCK_SIZE,
                (x + 1) * TILE_SIZE / TILE_BLOCK_SIZE,
                (y + 1) * TILE_SIZE / TILE_BLOCK_SIZE)
            work_queue.put((list(original_img_small.crop(small_box).getdata()), large_box))
            progress.update()

except KeyboardInterrupt:
    logging.info('\nHalting, saving partial image please wait...')

finally:
    # put these special values onto the queue to let the workers know they can terminate
    for n in range(WORKER_COUNT):
        work_queue.put((EOQ_VALUE, EOQ_VALUE))

def mosaic(img_path, tiles_path, outfile):
tiles_data = TileProcessor(tiles_path).get_tiles()
image_data = TargetImage(img_path).get_data()
compose(image_data, tiles_data, output)

if name == ‘main’:
logging.basicConfig(filename=‘mosaic.log’,
format=’%(asctime)s %(filename)s : %(levelname)s %(message)s’,
level=logging.INFO)
logging.getLogger().addHandler(logging.StreamHandler())

opts, args = getopt.gnu_getopt(sys.argv[1:], 'i:t:o:ts:tr:e:', ['image=', 'tiles_dir=', 'outfile=',""])

base_image = None
tiles_dir = None
output = None
for k, v in opts:
    if k in ("-i", "--image"):
        base_image = v
    if k in ("-t", "--tiles_dir"):
        tiles_dir = v
    if k in ("-o", "--outfile"):
        output = v

# base_image = None
# tiles_dir = None

for value in (base_image, tiles_dir):
    if value is None:
        logging.error(WARN_INFO)
        sys.exit()

if output is None:
    output = './mosaic.jpg'

mosaic(base_image, tiles_dir, output)

注！！！***
这里不是直接运行的！这里你要在终端使用！

**命令：python mosaic_v2.py -i “D:\image\pic.jpg” -t “D:\image”

程序原图：

效果图：