How to use Median Fillter 2D

Hello

I am new to image processing. I am trying to use the 2D median filter with nios. But I am not clear how to instantiate the median filter.

nios_camcontrol_med u0 (

.clk_clk (<connected-to-clk_clk>), // clk.clk

.reset_reset_n (<connected-to-reset_reset_n>), // reset.reset_n

.ccd_controller_0_export_s1_key (<connected-to-ccd_controller_0_export_s1_key>), // ccd_controller_0_export_s1.key

.ccd_controller_0_export_s1_sw (<connected-to-ccd_controller_0_export_s1_sw>), // .sw

.key_pio_external_connection_export (<connected-to-key_pio_external_connection_export>), // key_pio_external_connection.export

.sw_pio_external_connection_export (<connected-to-sw_pio_external_connection_export>), // sw_pio_external_connection.export

.alt_vip_med_0_din_ready (<connected-to-alt_vip_med_0_din_ready>), // alt_vip_med_0_din.ready

.alt_vip_med_0_din_valid (<connected-to-alt_vip_med_0_din_valid>), // .valid

.alt_vip_med_0_din_data (<connected-to-alt_vip_med_0_din_data>), // .data

.alt_vip_med_0_din_startofpacket (<connected-to-alt_vip_med_0_din_startofpacket>), // .startofpacket

.alt_vip_med_0_din_endofpacket (<connected-to-alt_vip_med_0_din_endofpacket>), // .endofpacket

.alt_vip_med_0_dout_ready (<connected-to-alt_vip_med_0_dout_ready>), // alt_vip_med_0_dout.ready

.alt_vip_med_0_dout_valid (<connected-to-alt_vip_med_0_dout_valid>), // .valid

.alt_vip_med_0_dout_data (<connected-to-alt_vip_med_0_dout_data>), // .data

.alt_vip_med_0_dout_startofpacket (<connected-to-alt_vip_med_0_dout_startofpacket>), // .startofpacket

.alt_vip_med_0_dout_endofpacket (<connected-to-alt_vip_med_0_dout_endofpacket>) // .endofpacket

);

I have done the CCD_controller part. Now I am trying to use the median filter. I have read the ALTERA_video_ip_suite and get only some idea about those signals. But I dont know how can I use those. Specially, I need to know the value of the following signals:

din_ready,

dout_ready,

dout_valid,

din_valid,

din_startofpacket,

din_endofpacket,

dout_startofpacket,

dout_endofpacket

Can anyone help me about this.

Thanks and regards

Rupok