Instantiation of 2D median filter

Altera_Forum · ‎12-05-2015

Hello everyone

I am trying to instantiate the 2D median filter from couple of days. I am new in this field. I have made a sopc with IP core's - clock, clock video input, scaler and 2d Median filter. I am using the simple camera example from altera that comes with CD.

I can see the frame count in the 7-segments that implies camera is running. And so, the filter should be working too. But I don't see any out on LCD display panel. I am confused is it because of 1) fault instantiation of Median filter 2) or because of clock 3) clock video input

Here is the part of the code:

wire [23:0] LCD_DATA_med;

wire [7:0] lcd_r_med;

wire [7:0] lcd_g_med;

wire [7:0] lcd_b_med;

assign lcd_r_med = LCD_DATA_med[23:16];

assign lcd_g_med = LCD_DATA_med[15:8];

assign lcd_b_med = LCD_DATA_med[7:0];

// RGB classification by taking data from SDRAM

wire [9:0] wVGA_R = Read_DATA2[9:0];

wire [9:0] wVGA_G = {Read_DATA1[14:10],Read_DATA2[14:10]};

wire [9:0] wVGA_B = Read_DATA1[9:0];

sdram_pll u6 (

.inclk0(CLOCK3_50),

.c0(sdram_ctrl_clk),

.c1(DRAM_CLK),

.c2(CAMERA_XCLKIN), // cmos sensor main clock input,25M

.c3(cti0_clk) // cmos sensor lcd pix clock,33M

);

median u0 (

//camera-clock video input

.alt_vip_cti_0_clocked_video_vid_clk (cti0_clk), // alt_vip_cti_0_clocked_video.vid_clk

.alt_vip_cti_0_clocked_video_vid_data ({wVGA_R[9:2],wVGA_G[9:2],wVGA_B[9:2]}), //24 bit data from SDRAM

.alt_vip_cti_0_clocked_video_vid_datavalid (rCCD_LVAL), // .vid_datavalid

.alt_vip_cti_0_clocked_video_vid_locked (DLY_RST_3), // .vid_locked

//clock

.clk_clk (CLOCK_50), // clk.clk

.reset_reset_n (DLY_RST_3),// reset.reset_n

//2D Median: out

.alt_vip_med_0_dout_ready (Read), // 'Read' from ltp_controller

.alt_vip_med_0_dout_valid (med_dout_valid), // Not sure; just wrote a wire type variable

.alt_vip_med_0_dout_data (LCD_DATA_med), // Median output data(8-bit) .data

.alt_vip_med_0_dout_startofpacket (dout_startofpacket), //Not sure; just wrote a wire type variable //.startofpacket

.alt_vip_med_0_dout_endofpacket (dout_endofpacket) //Not sure; just wrote a wire type variable //.endofpacket

);

//ltp controller: touch panel-display output

ltp_controller u1 ( .iCLK(ltm_nclk), //LTP_CTRL_CLK

.iRST_n(DLY_RST_2),

.iREAD_DATA1({lcd_g_med[7:5], lcd_b_med}),

.iREAD_DATA2({lcd_g_med[3:0], lcd_r_med}),

.oREAD_SDRAM_EN(Read),

// lcd side

.oLCD_R(lcd_r),

.oLCD_G(lcd_g),

.oLCD_B(lcd_b),

.oHD(lcd_hs),

.oVD(lcd_vs),

.oDEN()

);

If I use "wVGA_R, wVGA_R,wVGA_R" in 'ltp_controller' I can display the image on LCD panel. If use the median filter module than nothing shown on the display but the camra runs and frame count shown on 7-segments. I have also attached the screenshot of SOPC.

Can any one please help me out from this problem..Please

Thanks and regards

Rupok

Altera_Forum · ‎12-17-2015

Can anybody please help me? I am still not able to implement 2D median filter..

Thanks