def main():
cases_per_1000 = get_cases()
try:
display = epd1in54_V2.EPD()
display.init()
display.Clear(255)
w = display.height
h = display.width
bigfont = ImageFont.truetype(os.path.join(assets_dir, FONT_FILE), 120)
smallfont = ImageFont.truetype(os.path.join(assets_dir, FONT_FILE), 28)
image = Image.new(mode='1', size=(w, h), color=255)
draw = ImageDraw.Draw(image)
draw.text((0, 0),
"%.1f" % cases_per_1000,
font=bigfont,
fill=0,
align='left')
draw.text((0, 130),
"cases per 1000",
font=smallfont,
fill=0,
align='left')
today = datetime.date.today()
draw.text((0, 160),
"updated %s" % today.strftime('%d %b'),
font=smallfont,
fill=0,
align='left')
display.display(display.getbuffer(image))
except Exception as e:
print(e)
# -*- coding:utf-8 -*-
import os
picdir = './pic'
import logging
from waveshare_epd import epd1in54_V2
import time
from PIL import Image, ImageDraw, ImageFont
import traceback
logging.basicConfig(level=logging.DEBUG)
try:
logging.info("epd1in54_V2 Demo")
epd = epd1in54_V2.EPD()
logging.info("init and Clear")
epd.init()
epd.Clear(0xFF)
time.sleep(1)
# Drawing on the image
logging.info("1.Drawing on the image...")
image = Image.new('1', (epd.width, epd.height),
255) # 255: clear the frame
draw = ImageDraw.Draw(image)
font = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 24)
draw.rectangle((0, 10, 200, 34), fill=0)
draw.text((8, 12), 'hello world', font=font, fill=255)
draw.text((8, 36), u'春風商事', font=font, fill=0)
def main():
try:
# 1-设备与环境初始化
picdir = os.path.join(os.path.dirname(os.path.realpath(__file__)),
'lib_E-ink/pic') # 设置路径
libdir = os.path.join(os.path.dirname(os.path.realpath(__file__)),
'lib_E-ink/lib')
if os.path.exists(libdir):
sys.path.append(libdir)
logging.basicConfig(level=logging.DEBUG)
# 摄像头
camera = cv2.VideoCapture(0) # 定义摄像头对象，参数0表示第一个摄像头，默认640x480
# camera.set(cv2.CAP_PROP_FRAME_WIDTH, 960) # 重设获取图像分辨率(predict.py设定了最大1000)
# camera.set(cv2.CAP_PROP_FRAME_HEIGHT, 540) # 图像越大处理速度越慢，树莓派不开超频时会卡
if camera is None: # 摄像头打开失败
print(u'检测摄像头是否连接正常!')
exit()
fps = 24 # 帧率
# 水墨屏
epd = epd1in54_V2.EPD()
logging.info("E-ink Init & Clear")
epd.init()
epd.Clear(0xFF)
image = Image.open(os.path.join(picdir, 'USST.bmp')) # read bmp file
epd.display(epd.getbuffer(image)) # 欢迎界面
time.sleep(2)
# 绘制的图像界面
image = Image.open(os.path.join(picdir, '1in54.bmp'))
draw = ImageDraw.Draw(image) # 相当于清屏，得到当前图像对象句柄
font20 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'),
20) # 字体，高20个像素
font24 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'),
24) # 字体，高24个像素
font30 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 30)
draw.text((0, 89), u' 界面初始化 ', font=font30,
fill=0) # PIL库还提供很多绘制函数，十分方便
draw.text((5, 165), u'CPU: °C GPU: °C', font=font20, fill=0)
draw.rectangle((70, 4, 180, 30), fill=255)
draw.text((70, 4), time.strftime('%m/%d/%Y'), font=font24, fill=0)
epd.display(epd.getbuffer(image))
# 向量机图像学习分类训练
predictor = predict.CardPredictor()
predictor.train_svm()
logging.info(u'SVM学习训练完毕')
refershsign = 0 # 刷新墨水屏的标记；0不刷新，1刷新
lastrefreshtime = 0 # 记录墨水屏上次刷新的时间
lastcarchar = None
while True:
start = time.time()
res, cur_frame = camera.read() # 读取视频流
if res != True:
break
end = time.time()
seconds = end - start
if seconds < 1.0 / fps: # 按帧速处理，这里其实可以可以除掉了，因为这里视频输出帧率已经无法保证
time.sleep(1.0 / fps - seconds)
# 若检测按下ESC键，则退出程序
key = cv2.waitKey(10) & 0xff
if key == 27:
break
# 车牌识别
carchar, roi, color = predictor.predict(
cur_frame) # 返回识别到的字符，定位的车牌图像，车牌颜色
if carchar is not None:
print(u'识别结果:{0:s}\n'.format(
carchar.decode('utf-8'))) # Python2对中文字符不直接支持的问题
if carchar != lastcarchar: # 说明与上次识别的结果不一致，需要刷新下墨水屏
refershsign = 1
lastcarchar = carchar
else:
lastcarchar = None
continue
# 当有新的识别结果，且满足刷新频率时（2s/次），更新墨水屏显示
if (time.time() - lastrefreshtime) > 2 and refershsign == 1:
draw.rectangle((10, 75, 190, 150), fill=255)
draw.text((10, 75), u' 识别成功！ ', font=font24, fill=0)
draw.text((35, 110),
carchar.decode('utf-8'),
font=font30,
fill=0)
draw.rectangle((70, 38, 180, 65), fill=255)
draw.text((70, 38),
time.strftime(' %H:%M:%S'),
font=font24,
fill=0)
draw.rectangle((50, 165, 70, 198), fill=255)
draw.text((50, 165),
str(int(get_cpu_temp())),
font=font20,
fill=0)
draw.rectangle((145, 165, 168, 198), fill=255)
draw.text((145, 165),
str(int(get_gpu_temp())),
font=font20,
fill=0)
epd.displayPart(epd.getbuffer(image)) # 局部刷新显示
lastrefreshtime = time.time()
refershsign = 0
camera.release() # 释放摄像头
cv2.destroyAllWindows() # 关闭所有图像窗口
logging.info("E-Ink Clear...") # 墨水屏清屏
epd.init()
epd.Clear(0xFF)
epd.sleep()
# 异常处理
except IOError as e:
logging.info(e)
except KeyboardInterrupt:
logging.info("ctrl + c:")
epd1in54_V2.epdconfig.module_exit()
exit()
