extract_font (NIST).py 文件源码

def extractFunction(font_loc):
    white = (255, 255, 255)

    # use a truetype font
    font = ImageFont.truetype(font_loc, 280)
    im = Image.new("RGB", (280, 280), white)
    draw = ImageDraw.Draw(im)

    for code in range(ord('a'), ord('z') + 1):
        w, h = draw.textsize(chr(code), font=font)
        im = Image.new("RGB", (w, h), white)
        draw = ImageDraw.Draw(im)
        draw.text((0, 0), chr(code), font=font, fill="#000000")
        convert_im(code, im)
        #im.save(chr(code) + str(time.time()) + ".png")

    for code in range(ord('A'), ord('Z') + 1):
        w, h = draw.textsize(chr(code), font=font)
        im = Image.new("RGB", (w, h), white)
        draw = ImageDraw.Draw(im)
        draw.text((0, 0), chr(code), font=font, fill="#000000")
        convert_im(code, im)
        #im.save(chr(code) + str(time.time()) + ".png")