Django Dynamic Logo Resize and Background Fill

dynamiclogomodel.py

from PIL import Image

from django.db import models
from django.conf import settings

from imagekit import ImageSpec, register
from imagekit.models import ImageSpecField
from imagekit.processors import ResizeToFit


class LogoProcessor(ImageSpec):
    format = 'JPEG'
    options = {'quality': 90}
    @property
    def processors(self):
        logoimage = self.source
        image = Image.open(logoimage)
        rgb_image = image.convert('RGB')
        background_color = rgb_image.getpixel((1, 1))
        if background_color == (0, 0, 0):
            background_color = (255,255,255)
        return [ResizeToFit(300, 300,mat_color=(background_color))]

register.generator('logo_processor', LogoProcessor)

class Company(models.Model):
    logo = models.ImageField(upload_to=settings.MEDIA_ROOT,default='')
    logo_thumb = ImageSpecField(
        source='logo',
        id='logo_processor'
      )