custom filters/validators zend framework

i have zend horizon concentration structure below:

/application
/library
    /zend
    /core
        /filter
            /myfilter.php
        /validator
            /myvalidator.php

i put tradition filters validators particular folders have hallowed automatically used. however, i can't figure out best accomplish this.

i need fortitude work zend_filter_input fashion:

$filters = array(
    'month'   => 'digits',
    'account' => 'stringtrim',
    'other'   => 'myfilter'
);

$validators = array(
    'account' => 'alpha',
    'other'   => 'myvalidator'
);

$inputfilter = new zend_filter_input($filters, $validators);

what i already know:

• core_filter_myfilter implements zend_filter_interface


• obviously, filters validators already consolidate path.