问题
I have a problem. The main task is to create a bot in a telegram, which, when a photo is loaded into it, will change the contrast of the image. The main condition is the addition of the so-called black and white dots. Their principle is to search for the lightest point, the darkest and maximum values at these points.Just the code (working, checking) looks something like this (used numpy and PIL).
from PIL import Image
import numpy as np
image = Image.open('example1.jpg')
arr = np.asarray(image)
rgbmax = np.max(arr)
rgbmin = np.min(arr)
rgbmax = 240
rgbmin = 15
R, G, B = image.split()
rout = R.point(lambda i: (i - rgbmin) / (rgbmax - rgbmin) * 255)
gout = G.point(lambda i: (i - rgbmin) / (rgbmax - rgbmin) * 255)
bout = B.point(lambda i: (i - rgbmin) / (rgbmax - rgbmin) * 255)
resultimg = Image.merge("RGB", (rout, gout, bout))
resultimg.save("result_img.jpg")
This part is required. We must use this method. So, if i use that in my code, i get this error.
import telebot
import os
import urllib.request
from PIL import Image
import numpy as np
TOKEN = 'here token is, just cut it out'
bot = telebot.TeleBot(TOKEN)
result_storage_path = 'temp'
@bot.message_handler(commands=['start'])
def start_message(message):
bot.send_message(message.chat.id, 'Hello. I`m bot for processing your images. 🎆')
bot.send_message(message.chat.id, 'Please, send me number to continue.')
@bot.message_handler(content_types=['text'])
def handle_text(message):
cid = message.chat.id
if message.text.isdigit():
number = int(message.text)
bot.send_message(message.chat.id,
'You have sent number = ' + str(number) + '.')
else:
bot.send_message(message.chat.id, 'Input isn`t correct. Please, send number.')
@bot.message_handler(content_types=['photo'])
def handle_photo(message):
cid = message.chat.id
image_name = save_image_from_message(message)
bot.send_message(cid, 'I save your photo.')
image_name_new = handle_image(image_name)
bot.send_photo(message.chat.id, open('{0}/{1}'.format(result_storage_path, image_name_new), 'rb'), 'Done!')
bot.send_message(message.chat.id, 'Want to try again?')
cleanup_remove_images(image_name, image_name_new)
def save_image_from_message(message):
image_id = get_image_id_from_message(message)
file_path = bot.get_file(image_id).file_path
image_url = "https://api.telegram.org/file/bot{0}/{1}".format(TOKEN, file_path)
if not os.path.exists(result_storage_path):
os.makedirs(result_storage_path)
image_name = "{0}.jpg".format(image_id)
urllib.request.urlretrieve(image_url, "{0}/{1}".format(result_storage_path, image_name))
return image_name
def get_image_id_from_message(message):
return message.photo[len(message.photo) - 1].file_id
def handle_image(image_name):
content_image = Image.open("{0}/{1}".format(result_storage_path, image_name))
arr = np.asarray(image_name)
rgbmax = np.max(arr)
rgbmin = np.min(arr)
rgbmax = 240
rgbmin = 15
R, G, B = image_name.split()
rout = R.point(lambda i: (i - rgbmin) / (rgbmax - rgbmin) * 255)
gout = G.point(lambda i: (i - rgbmin) / (rgbmax - rgbmin) * 255)
bout = B.point(lambda i: (i - rgbmin) / (rgbmax - rgbmin) * 255)
result_img_pillow = Image.merge("RGB", (rout, gout, bout))
image_name_new = "handled_image_" + image_name
result_img_pillow.save("{0}/{1}".format(result_storage_path, image_name_new))
return image_name_new
def cleanup_remove_images(image_name, image_name_new):
os.remove('{0}/{1}'.format(result_storage_path, image_name))
os.remove('{0}/{1}'.format(result_storage_path, image_name_new))
bot.polling()
Error and traceback
2020-05-23 13:03:37,571 (util.py:68 WorkerThread1) ERROR - TeleBot: "TypeError occurred, args=('cannot perform reduce with flexible type',)
Traceback (most recent call last):
File "E:\Anaconda\lib\site-packages\telebot\util.py", line 62, in run
task(*args, **kwargs)
File "E:/ХНУРЭ/ЦОЗ/imageproc/bot.py", line 42, in handle_photo
image_name_new = handle_image(image_name)
File "E:/ХНУРЭ/ЦОЗ/imageproc/bot.py", line 74, in handle_image
rgbmax = np.max(arr)
File "<__array_function__ internals>", line 6, in amax
File "E:\Anaconda\lib\site-packages\numpy\core\fromnumeric.py", line 2668, in amax
keepdims=keepdims, initial=initial, where=where)
File "E:\Anaconda\lib\site-packages\numpy\core\fromnumeric.py", line 90, in _wrapreduction
return ufunc.reduce(obj, axis, dtype, out, **passkwargs)
TypeError: cannot perform reduce with flexible type
"
Traceback (most recent call last):
File "E:/ХНУРЭ/ЦОЗ/imageproc/bot.py", line 119, in <module>
bot.polling()
File "E:\Anaconda\lib\site-packages\telebot\__init__.py", line 415, in polling
self.__threaded_polling(none_stop, interval, timeout)
File "E:\Anaconda\lib\site-packages\telebot\__init__.py", line 439, in __threaded_polling
self.worker_pool.raise_exceptions()
File "E:\Anaconda\lib\site-packages\telebot\util.py", line 111, in raise_exceptions
six.reraise(self.exc_info[0], self.exc_info[1], self.exc_info[2])
File "E:\Anaconda\lib\site-packages\six.py", line 703, in reraise
raise value
File "E:\Anaconda\lib\site-packages\telebot\util.py", line 62, in run
task(*args, **kwargs)
File "E:/ХНУРЭ/ЦОЗ/imageproc/bot.py", line 42, in handle_photo
image_name_new = handle_image(image_name)
File "E:/ХНУРЭ/ЦОЗ/imageproc/bot.py", line 74, in handle_image
rgbmax = np.max(arr)
File "<__array_function__ internals>", line 6, in amax
File "E:\Anaconda\lib\site-packages\numpy\core\fromnumeric.py", line 2668, in amax
keepdims=keepdims, initial=initial, where=where)
File "E:\Anaconda\lib\site-packages\numpy\core\fromnumeric.py", line 90, in _wrapreduction
return ufunc.reduce(obj, axis, dtype, out, **passkwargs)
TypeError: cannot perform reduce with flexible type
Maybe I'm doing something wrong? The fact is that this is the first task in python, and along the way I'm trying to figure it out. I would be very grateful if you were prompted how to solve this problem, or rather get rid of the error and make it work.
来源：https://stackoverflow.com/questions/61970403/cannot-perform-reduce-with-flexible-type-in-image-processing