Image binning in LI-IMX219-MIPI-FF-NANO-H136 v1.3 (Leopard's Imaging IMX219 camera)

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Hi,

I have a LI-IMX219-MIPI-FF-NANO H-136 v1.3 camera on a Jetson Nano Development Kit-B01, as the title says. I was particulary interested in this camera because of my previous experience with this sensor (Sony’s IMX219) on the RaspberryPi platform, through the Raspberry Pi Camera v2.

The IMX219 sensor supports a resolution mode of 1640x1232 with 2x2 on-chip binning - which is accessible in the Raspberry Pi. While using the camera on the Jetson Nano., I am able to request this resolution but I would like to have confirmation that the binning is being done. From my experience and by looking at the image, I’d say it isn’t, as the quality differs from what I get with the Raspberry Pi Camera v2, specially when I lower the lighting conditions.

Any way to understand if binning is happening (and how to trigger it if it isn’t) or any clarification from either NVIDIA/Leopard Imaging? Thanks!

3

I think you may need to consult with Sony to confirm this mode.
Did you confirm the image quality with others sensor mode?

4

Hi.

I am pretty sure about this mode. It’s mentioned both in the sensor’s datasheet and in the Pi Camera v2 documentation (section 6.2). My question is related to how/if the Leopard Imaging’s implementation handles this.

5

@SimonZhu
Could you help to check this.

Thanks

6

Hi daniel35y3s,
Which driver are you using? Please try this ISP file to see if you can get better image.

You can copy camera_overrides.isp to /var/nvidia/nvcam/settings on Jetson and do below two commands to enable the ISP file.
sudo chmod 664 /var/nvidia/nvcam/settings/camera_overrides.isp
sudo chown root:root /var/nvidia/nvcam/settings/camera_overrides.isp

7

Hi @SimonZhu, thanks for helping out!

I had already applied the ISP file - it fixed the pink tinting on the borders I had initially. What I wanted was some confirmation that indeed the 2x2 binning is active and configured on the LI-IMX219-MIPI-FF-NANO H-136 v1.3. I am new to the Jetson Nano plataform and it’s possible that I might not be configuring everything correctly, so it would be good to have that confirmation from the hardware side.

8

Hi @anon58607361 ,
I checked the register settings (0x0174 and 0x0175). It should be 2 x 2 analog binning mode

image
image1485×245 59.8 KB

static imx219_reg imx219_mode_1640x1232_120fps = {
/* capture settings /
{0x0157, 0x00}, / ANALOG_GAIN_GLOBAL[7:0] /
{0x015A, 0x09}, / COARSE_INTEG_TIME[15:8] /
{0x015B, 0xbd}, / COARSE_INTEG_TIME[7:0] */

/* format settings */
{0x0160, 0x09}, /* FRM_LENGTH[15:8] */
{0x0161, 0xC1}, /* FRM_LENGTH[7:0] */
{0x0162, 0x0D}, /* LINE_LENGTH[15:8] */
{0x0163, 0xE8}, /* LINE_LENGTH[7:0] */

{0x0164, 0x00},
{0x0165, 0x00},
{0x0166, 0x0C},
{0x0167, 0xCF},
{0x0168, 0x00},
{0x0169, 0x00},
{0x016A, 0x09},
{0x016B, 0x9F},


{0x016C, 0x06},
{0x016D, 0x68},
{0x016E, 0x04},
{0x016F, 0xD0},

{0x0170, 0x01},
{0x0171, 0x01},

{0x0174, 0x03},
{0x0175, 0x03},

{0x018C, 0x0A},
{0x018D, 0x0A},


/* clocks dividers */
{0x0301, 0x05},
{0x0303, 0x01},
{0x0304, 0x03},
{0x0305, 0x03},
{0x0306, 0x00},
{0x0307, 0x39},
{0x0309, 0x0A},
{0x030B, 0x01},
{0x030C, 0x00},
{0x030D, 0x72},


{IMX219_TABLE_END, 0x00}

};

9

Thanks, exactly the confirmation I was looking for. Marked your reply as the solution.