img2html实现将图片转换成网页

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简单介绍img2html的用法，安装就不用说了pip。这个包现只支持python2，支持python的话需改下源码这几个部分：

加注释的是修改的地方

#!/usr/bin/env python

# encoding=utf-8

from __future__ import print_function, unicode_literals

from collections import namedtuple

from itertools import cycle

import jinja2

from PIL import Image

Point = namedtuple('Point', ['x', 'y'])

Pixel = namedtuple('Pixel', ['r', 'g', 'b'])

RenderItem = namedtuple('RenderItem', ['color', 'char'])

RenderGroup = list

HTMLImage = list

TEMPLATE = '''

<html>

<head>

    <meta charset="utf-8">

    <title>{{ title }}</title>

    <style type="text/css">

        body {

            margin: 0px; padding: 0px; line-height:100%; letter-spacing:0px; text-align: center;

            min-width: {{width}}px;

            width: auto !important;

            font-size: {{size}}px;

            background-color: #{{background}};

            font-family: {{font_family}};

        }

    </style>

</head>

<body>

<div>

{% for group in html_image %}

    {% for item in group %}<font color="#{{ item.color }}">{{ item.char }}</font>{% endfor %}

    <br>

{% endfor %}

</div>

</body>

</html>'''

_c = cycle(r'/-\|')

def _progress_callback(percent):

    if percent == 100:

        print('\rDone!               ')

    else:

        import sys, time

        lca = getattr(_progress_callback, '_last_call_at', 0)

        if time.time() - lca > 0.1:

            _progress_callback._last_call_at = time.time()

            # _c.next() => next(_c)

            sys.stdout.write('\r{} progress: {:.2f}%'.format(next(_c), percent))

            sys.stdout.flush()

class Img2HTMLConverter(object):

    def __init__(self,

                 font_size=10,

                 char='䦗',

                 background='#000000',

                 title='img2html by xlzd',

                 font_family='monospace',

                 progress_callback=None):

        self.font_size = font_size

        self.background = background

        self.title = title

        self.font_family = font_family

        # if isinstance(char, str):

        #     char = char.decode('utf-8')

        self.char = cycle(char)

        self._prg_cb = progress_callback or _progress_callback

    def convert(self, source):

        image = Image.open(source)

        width, height = image.size

        row_blocks = int(round(float(width) / self.font_size))

        col_blocks = int(round(float(height) / self.font_size))

        html_image = HTMLImage()

        progress = 0.0

        step = 1. / (col_blocks * row_blocks)

        # xrange => range

        for col in range(col_blocks):

            render_group = RenderGroup()

            for row in range(row_blocks):

                pixels = []

                for y in range(self.font_size):

                    for x in range(self.font_size):

                        point = Point(row * self.font_size + x, col * self.font_size + y)

                        if point.x >= width or point.y >= height:

                            continue

                        pixels.append(Pixel(*image.getpixel(point)[:3]))

                average = self.get_average(pixels=pixels)

                color = self.rgb2hex(average)

                # render_item = RenderItem(color=color, char=self.char.next())

                render_item = RenderItem(color=color, char=next(self.char))

                render_group.append(render_item)

                progress += step

                self._prg_cb(progress * 100)

            html_image.append(render_group)

        self._prg_cb(100)

        return self.render(html_image)

    def render(self, html_image):

        template = jinja2.Template(TEMPLATE)

        return template.render(

            html_image=html_image,

            size=self.font_size,

            background=self.background,

            title=self.title,

            font_family=self.font_family,

            width=self.font_size * len(html_image[0]) * 2

        )

    @staticmethod

    def rgb2hex(pixel):

        return '{:02x}{:02x}{:02x}'.format(*pixel)

    @staticmethod

    def get_average(pixels):

        r, g, b = 0, 0, 0

        for pixel in pixels:

            r += pixel.r

            g += pixel.g

            b += pixel.b

        base = float(len(pixels))

        return Pixel(

            r=int(round(r / base)),

            g=int(round(g / base)),

            b=int(round(b / base)),

        )

具体实现代码如下：

# -*- coding: utf-8 -*-

# Nola

"""

img2html : Convert image to HTML

optional arguments:

  -b #RRGGBB, --background #RRGGBB  background color (#RRGGBB format)

  -s (4~30), --size (4~30)          font size (int)

  -c CHAR, --char CHAR              characters

  -t TITLE, --title TITLE           html title

  -f FONT, --font FONT              html font

  -i IN, --in IN                    要转换的图片

  -o OUT, --out OUT                 输出文件名

$ img2html -i timg.jpg -o timg_html.html

"""

from img2html.converter import Img2HTMLConverter

converter = Img2HTMLConverter(char='爱',title='金木研')

html = converter.convert('timg.jpg')

with open('timg_html.html',mode='w',encoding='utf-8') as f:

    f.write(html)