我必须制作一个程序,从命令行读取一个文件并将其转换为ASCII艺术。我正在使用PPM格式,这里有一个指向the project的链接。
以下是我目前掌握的情况:
import sys
def main(filename):
image = open(filename)
#reads through the first three lines
color = image.readline().splitlines()
size_width, size_height = image.readline().split()
max_color = image.readline().splitlines()
#reads the body of the file
pixels = image.read().split()
red = 0
green = 0
blue = 0
r_g_b_value = []
#pulls out the values of each tuple and coverts it to its grayscale value
for i in pixels:
if i != "\n" or " ":
if len(i) == 3:
red = int(i[0]) * .3
green = int(i[1]) * .59
blue = int(i[2]) * .11
elif len(i) == 2:
red == int(i[0]) * .3
green == int(i[1]) *.59
blue == 0
elif len(i) == 1:
red == int(i[0]) * .3
green == 0
blue == 0
r_g_b_value = [red + green + blue]
character = []
for j in len(r_g_b_value):
if int(j) <= 16:
character = " "
elif int(j) > 16 and int(j) <= 32:
character = "."
elif int(j) > 32 and int(j) <= 48:
character = ","
elif int(j) > 48 and int(j) <= 64:
charcter = ":"
elif int(j) > 64 and int(j) <= 80:
character = ";"
elif int(j) > 80 and int(j) <= 96:
character = "+"
elif int(j) > 96 and int(j) <= 112:
character = "="
elif int(j) > 112 and int(j) <= 128:
character = "o"
elif int(j) > 128 and int(j) <= 144:
character = "a"
elif int(j) > 144 and int(j) <= 160:
character = "e"
elif int(j) > 160 and int(j) <= 176:
character = "0"
elif int(j) > 176 and int(j) <= 192:
character = "$"
elif int(j) > 192 and int(j) <= 208:
character = "@"
elif int(j) > 208 and int(j) <= 224:
character = "A"
elif int(j) > 224 and int(j) <= 240:
character = "#"
else:
character = "M"
grayscale = character
print(grayscale)
main(sys.argv[1])
我得到一个错误,说'int'对象是不可迭代的,有没有一个简单的方法来解决这个问题,以及如何有人建议打印出来,同时保留图像。
我最不确定的是如何保持图片的宽度和高度。
任何帮助都将不胜感激。
您可以使用^{} 进行转换。
首先,下载
image-to-ansi.py
:将此脚本另存为
ppmimage.py
:您可以这样测试脚本(假设您已经安装了
netpbm
和imagemagick
):convert -resize $(($COLUMNS*2))x$(($LINES*2)) logo: pnm:- | pnmtoplainpnm | python3 ppmimage.py
在我的机器上,看起来是这样的:
不久前我用C写了其中一个,我计算了这个公式要使用的字符:
至于宽度和高度,可以平均每两行垂直像素将高度减半。
编辑1:回应评论: 基本思想是,它将RGB值从0缩放到255,再缩放到数组长度的0,并将其用作索引。
编辑2:更新以更正我忽略了您的灰度正常化。
在这里,您的代码已被修改并正常工作。
它不是最优的,它没有考虑到头部中是否存在或多或少的注释,也没有异常处理,但它只是一个开始。
这些是ppm图和ASCII Art结果
以及我在示例中使用的micro-ppm文件:
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