how to use liipimaginebundle filterset in twig -

i have following filterset in config file , problem using different filter in twig

liip_imagine: filter_sets:     my_thumb:         quality: 75         filters:             thumbnail: { size: [120, 90], mode: outbound }             relative_resize: { scale: 0.5 }   # transforms 50x40 125x100             relative_resize: { scale: 1.5 }   # transforms 50x40 125x100             crop: { start: [10, 20], size: [120, 90] } 

if there 1 filter this,

<img src="{{ asset(['images/', news.picpath]|join| imagine_filter('my_thumb'))  }}" alt="{{ news.title }} image not found" class="large" /> 

but not know how use it.

in config hane 1 filter set named my_thumb. if want more filters should separate them in config this:

iip_imagine:     filter_sets:         my_thumb:             quality: 75                 filters:                     thumbnail: { size: [120, 90], mode: outbound }         my_half_scale_resizer:             quality: 80                 filters:                     relative_resize: { scale: 0.5 }   # transforms 50x40 125x100         my_cropped_image:             quality: 70                 filters:                     crop: { start: [10, 20], size: [120, 90] } 

and in twig file can use:

<img src="{{ asset(imagepath| imagine_filter('thumb_50x50')) }}"> <img src="{{ asset(imagepath| imagine_filter('my_half_scale_resizer')) }}"> <img src="{{ asset(imagepath| imagine_filter('my_cropped_image')) }}">