Not sure if this is the direction you are looking to go but I have had 
great luck using 

http://sorl-thumbnail.readthedocs.org/en/latest/examples.html

You do your template cropping in the template, This does require you to 
setup a caching server. 

Hope this helps! 

On Thursday, April 4, 2013 2:44:31 PM UTC-7, leonardo wrote:
>
> Hi,
>
> I am using django-imagekit to crop images.
> I have this model:
>
> *from imagekit.models import ImageSpecField*
> *from imagekit.processors import Crop*
>
> *class Image(models.Model):*
> *    x1 = models.IntegerField(blank=True, default=0)*
> *    y1 = models.IntegerField(blank=True, default=0)*
> *    height = models.IntegerField(blank=True, default=0)*
> *    width = models.IntegerField(blank=True, default=0)*
> *    image_file = models.ImageField(upload_to='images/')*
> *
> *
> *    cropped_image = ImageSpecField(*
> *        [Crop(width=171, height=82, anchor=None, x=-224, y=-283)],*
> *        image_field='image_file',*
> *        format='JPEG', options={'quality': 90})*
>
> How can I use the object's attributes x1, y1, width and height as 
> parameters to Crop processor ?
>
> Regards,
>

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