Here is the example with sample4:

import numpy as np
import cv2 as cv
import os
import time

cap = cv.VideoCapture('v4l2src device=/dev/video0 ! video/x-raw, format=NV12, width=1920, height=1080, framerate=30/1 ! videoconvert ! appsink', cv.CAP_GSTREAMER)

if not cap.isOpened():
    print("Cannot capture from camera. Exiting.")
    os._exit(0)

last_time = time.time()
frame_count = 0

while True:
    ret, frame = cap.read()
    if not ret:
        break

    frame_count += 1
    this_time = time.time()

    if this_time - last_time >= 1.0:
        fps = frame_count / (this_time - last_time)
        print(f"FPS: {fps}")
        last_time = this_time
        frame_count = 0


cap.release()
cv.destroyAllWindows()

Simply reading the frame is currently only getting 15 FPS on ROC-RK3588S-PC. I believe this is a driver issue with NV12.

If I use NV12 as described in sample4 I can only read frames with max 15FPS from the camera. This will not work for our application.

Can you show me an example which can read frames with 30FPS?

@natzguk said in ROC-RK3588S-PC and IMX462:

Only format=NV12 (v4l2_opencv_show4.py) works with OpenCV but it requires videoconvert which is very slow.
I want to use format=UYVY (v4l2_opencv_show2.py) but it does not work with
ROC-RK3588S-PC and IMX462. I believe it is a problem with the driver for ROC-RK3588S-PC. The same code with format=UYVY works with Raspberry PI 4.

I apologize for the delay in responding to your question. In fact, as mentioned here, the VICAP module of RK3588 does not support outputting the UYVY format, so please use the NV12 format instead.
Actually, I think using the NV12 format is a good choice.It will not lead to a decrease in system efficiency.

@natzguk said in ROC-RK3588S-PC and IMX462:

Did you have any chance to check the samples
v4l2_opencv_show1.py
v4l2_opencv_show2.py
v4l2_opencv_show3.py
with ROC-RK3588S-PC and IMX462?

Indeed, as you said, only sample4 works correctly. These samples are just collected examples of common ways to use OpenCV to access the camera, provided for customers as a reference.
As mentioned before, our expertise in OpenCV development is not extensive.

videoconvert is indeed an issue. I believe the internal data format of OpenCV is RGBA, and regardless of whether you use UYVY or NV12, conversion is needed.

Did you have any chance to check the samples

v4l2_opencv_show1.py
v4l2_opencv_show2.py
v4l2_opencv_show3.py

with ROC-RK3588S-PC and IMX462?

Only format=NV12 (v4l2_opencv_show4.py) works with OpenCV but it requires videoconvert which is very slow.

I want to use format=UYVY (v4l2_opencv_show2.py) but it does not work with
ROC-RK3588S-PC and IMX462. I believe it is a problem with the driver for ROC-RK3588S-PC. The same code with format=UYVY works with Raspberry PI 4.

v4l2_opencv_show1.py
v4l2_opencv_show2.py
v4l2_opencv_show3.py

Do not work with ROC-RK3588S-PC and IMX462.

Files 1-3 do not work. No frames are shown. Only v4l2_opencv_show4.py works but it only reads with 15 FPS.

Can you confirm that the python opencv examples 1-3 work with ROC-RK3588S-PC and IMX462 ?

camera.open(
        "v4l2src io-mode=dmabuf device=/dev/video0 ! video/x-raw, format=(string)UYVY, width=(int)1920, height=(int)1080 ! appsink",
        cv::CAP_GSTREAMER);

Does not work. I can open the camera but the frames are always empty.

firefly@firefly:~$ GST_DEBUG=3 gst-launch-1.0 v4l2src io-mode=dmabuf device=/dev/video0 ! video/x-raw, format=UYVY, width=1920, height=1080 ! appsink                 Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
0:00:00.517057017 46983   0x5597da8c60 WARN                    v4l2 gstv4l2object.c:4735:gst_v4l2_object_probe_caps:<v4l2src0:src> Failed to probe pixel aspect ratio with VIDIOC_CROPCAP: Invalid argument
New clock: GstSystemClock
0:00:00.517846562 46983   0x5597da8c60 WARN                    v4l2 gstv4l2object.c:4528:gst_v4l2_object_get_crop_rect:<v4l2src0:src> Failed to get default crop rectangle with VIDIOC_G_SELECTION: Invalid argument
0:00:00.517940188 46983   0x5597da8c60 WARN                    v4l2 gstv4l2object.c:3278:gst_v4l2_object_reset_compose_region:<v4l2src0:src> Failed to get default compose rectangle with VIDIOC_G_SELECTION: Invalid argument
0:00:00.522044833 46983   0x5597da8c60 WARN          v4l2bufferpool gstv4l2bufferpool.c:850:gst_v4l2_buffer_pool_start:<v4l2src0:pool0:src> Uncertain or not enough buffers, enabling copy threshold

On RK3588S with opencv I only get slow FPS reading from IMX462 of around 15 FPS. The same code on RaspberryPi can read with 30FPS.

Here is what I tried:

1.)

camera.open(
        "v4l2src device=/dev/video0 ! video/x-raw, format=(string)NV16, width=(int)1920, height=(int)1080,framerate=30/1 ! videoconvert ! appsink'",
        cv::CAP_GSTREAMER);

Only 11-13 FPS

2.)

camera.open(
        "v4l2src io-mode=dmabuf device=/dev/video0 ! video/x-raw, format=(string)UYVY, width=(int)1920, height=(int)1080 ! appsink",
        cv::CAP_GSTREAMER);

Can open camera but can not read frame

3.)

camera.open(0, cv::CAP_V4L2);
camera.set(cv::CAP_PROP_FRAME_WIDTH, 1920);
camera.set(cv::CAP_PROP_FRAME_HEIGHT, 1080);

Can open camera but can not read frame

Here is the output of dmesg

firefly@firefly:~$ dmesg | grep veye
[    6.065238] veyecam2m 7-003b: veye camera driver version: 00.01.01
[    6.065262] veyecam2m 7-003b: Failed to get power-gpios, maybe no use
[    6.065422] veyecam2m 7-003b: supply avdd not found, using dummy regulator
[    6.065498] veyecam2m 7-003b: supply dovdd not found, using dummy regulator
[    6.065531] veyecam2m 7-003b: supply dvdd not found, using dummy regulator
[    6.065560] veyecam2m 7-003b: could not get default pinstate
[    6.065565] veyecam2m 7-003b: could not get sleep pinstate
[    6.065580] veyecam2m 7-003b: Success to get veyecam2m endpoint data lanes, dts uses 2 lanes
[    6.187925] veyecam2m 7-003b:  camera id is veyecam2m
[    6.190818] veyecam2m 7-003b: sensor is IMX462
[    6.190860] veyecam2m 7-003b: board type is ONE board
[    6.191449] rockchip-csi2-dphy csi2-dphy0: dphy0 matches m00_b_veyecam2m 7-003b:bus type 5

And v4l2-ctl

firefly@firefly:~$ v4l2-ctl --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
        Type: Video Capture Multiplanar

        [0]: 'NV16' (Y/CbCr 4:2:2)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [1]: 'NV61' (Y/CrCb 4:2:2)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [2]: 'NV12' (Y/CbCr 4:2:0)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [3]: 'NV21' (Y/CrCb 4:2:0)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [4]: 'YUYV' (YUYV 4:2:2)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [5]: 'YVYU' (YVYU 4:2:2)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [6]: 'UYVY' (UYVY 4:2:2)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [7]: 'VYUY' (VYUY 4:2:2)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [8]: 'RGB3' (24-bit RGB 8-8-8)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [9]: 'RGBP' (16-bit RGB 5-6-5)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [10]: 'BGRH' (18-bit BGRX 6-6-6-14)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [11]: 'RGGB' (8-bit Bayer RGRG/GBGB)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [12]: 'GRBG' (8-bit Bayer GRGR/BGBG)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [13]: 'GBRG' (8-bit Bayer GBGB/RGRG)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [14]: 'BA81' (8-bit Bayer BGBG/GRGR)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [15]: 'RG10' (10-bit Bayer RGRG/GBGB)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [16]: 'BA10' (10-bit Bayer GRGR/BGBG)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [17]: 'GB10' (10-bit Bayer GBGB/RGRG)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [18]: 'BG10' (10-bit Bayer BGBG/GRGR)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [19]: 'RG12' (12-bit Bayer RGRG/GBGB)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [20]: 'BA12' (12-bit Bayer GRGR/BGBG)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [21]: 'GB12' (12-bit Bayer GBGB/RGRG)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [22]: 'BG12' (12-bit Bayer BGBG/GRGR)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [23]: 'BYR2' (16-bit Bayer BGBG/GRGR)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [24]: 'GB16' (16-bit Bayer GBGB/RGRG)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [25]: 'GR16' (16-bit Bayer GRGR/BGBG)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [26]: 'RG16' (16-bit Bayer RGRG/GBGB)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [27]: 'Y16 ' (16-bit Greyscale)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [28]: 'GREY' (8-bit Greyscale)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [29]: 'EBD8' (Embedded data 8-bit)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [30]: 'SPD6' (Shield pix data 16-bit)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [31]: 'Y12 ' (12-bit Greyscale)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8
        [32]: 'Y10 ' (10-bit Greyscale)
                Size: Stepwise 64x64 - 1920x1080 with step 8/8

Please help

It works now! Thank you.

Maybe you can update the documentation. https://wiki.veye.cc/index.php/VEYE_CS_Camera_on_Firfly_Boards

For me it was not clear and I just downloaded the latest image for RK3588S which is v1.0.6f

@natzguk said in ROC-RK3588S-PC and IMX462:

ROC-RK3588S-PC_Ubuntu_v1.0.6f_veye_mvcam_vbyone_230830.img

Do not use this image.

Use this one：
ROC-RK3588S-PC_Ubuntu_v1.0.4b_221226_veyecam2m.img