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    CoolPi 4B OV5647 摄像头图片全黑

    Scheduled Pinned Locked Moved Pi 4B
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    • T
      traceback
      last edited by

      在CoolPi 4B 上使用Rpi Camera rev1.3的摄像头,最开始读取/dev/video11,光线很暗,发现rkaiq_3a_server没有跑起来,所以使用Coolpi launchpad上的rkaiq_3a_server进行测试,server没有报错,但是v4l2读取到的图片全黑(试着用手电筒对着摄像头照,也是全黑的)
      使用的内核是自己编译的,是github上的develop分支,两天前clone下来并编译的,除了更新rknpu驱动之外没有动其他的地方
      dmesg信息:

      (base) root@Ubuntu:~# dmesg | grep ov564
      [   14.392970] ov5648 8-0036: driver version: 00.01.05
      [   14.392978] ov5648 8-0036: Failed to get power-gpios, maybe no use
      [   14.392981] ov5648 8-0036: Failed to get reset-gpios, maybe no use
      [   14.392984] ov5648 8-0036: Failed to get pwdn-gpios
      [   14.393012] ov5648 8-0036: supply dovdd not found, using dummy regulator
      [   14.393034] ov5648 8-0036: supply dvdd not found, using dummy regulator
      [   14.393042] ov5648 8-0036: lane_num(2)  pixel_rate(84000000)
      [   14.393044] ov5648 8-0036: could not get default pinstate
      [   14.398434] ov5648 8-0036: could not get sleep pinstate
      [   14.406994] ov5648 8-0036: Detected OV005647 sensor
      [   14.407004] rockchip-csi2-dphy csi2-dphy0: dphy0 matches m01_f_ov5648 8-0036:bus type 5
      

      /dev/video设备:

      (base) root@Ubuntu:~# ls /dev/video*
      /dev/video0   /dev/video12  /dev/video16  /dev/video2  /dev/video6  /dev/video-dec0
      /dev/video1   /dev/video13  /dev/video17  /dev/video3  /dev/video7  /dev/video-enc0
      /dev/video10  /dev/video14  /dev/video18  /dev/video4  /dev/video8
      /dev/video11  /dev/video15  /dev/video19  /dev/video5  /dev/video9
      

      v4l2 list devices信息:

      (base) root@Ubuntu:~# v4l2-ctl --list-devices
      rkisp-statistics (platform: rkisp):
              /dev/video18
              /dev/video19
      
      rkcif-mipi-lvds2 (platform:rkcif):
              /dev/media0
      
      rkcif (platform:rkcif-mipi-lvds2):
              /dev/video0
              /dev/video1
              /dev/video2
              /dev/video3
              /dev/video4
              /dev/video5
              /dev/video6
              /dev/video7
              /dev/video8
              /dev/video9
              /dev/video10
      
      rkisp_mainpath (platform:rkisp0-vir0):
              /dev/video11
              /dev/video12
              /dev/video13
              /dev/video14
              /dev/video15
              /dev/video16
              /dev/video17
              /dev/media1
      

      media-ctl:

      (base) root@Ubuntu:~# sudo media-ctl -p -d /dev/media0
      Media controller API version 5.10.110
      
      Media device information
      ------------------------
      driver          rkcif
      model           rkcif-mipi-lvds2
      serial
      bus info
      hw revision     0x0
      driver version  5.10.110
      
      Device topology
      - entity 1: stream_cif_mipi_id0 (1 pad, 11 links)
                  type Node subtype V4L flags 0
                  device node name /dev/video0
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 [ENABLED]
                      <- "rockchip-mipi-csi2":2 []
                      <- "rockchip-mipi-csi2":3 []
                      <- "rockchip-mipi-csi2":4 []
                      <- "rockchip-mipi-csi2":5 []
                      <- "rockchip-mipi-csi2":6 []
                      <- "rockchip-mipi-csi2":7 []
                      <- "rockchip-mipi-csi2":8 []
                      <- "rockchip-mipi-csi2":9 []
                      <- "rockchip-mipi-csi2":10 []
                      <- "rockchip-mipi-csi2":11 []
      
      - entity 5: stream_cif_mipi_id1 (1 pad, 11 links)
                  type Node subtype V4L flags 0
                  device node name /dev/video1
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 []
                      <- "rockchip-mipi-csi2":2 [ENABLED]
                      <- "rockchip-mipi-csi2":3 []
                      <- "rockchip-mipi-csi2":4 []
                      <- "rockchip-mipi-csi2":5 []
                      <- "rockchip-mipi-csi2":6 []
                      <- "rockchip-mipi-csi2":7 []
                      <- "rockchip-mipi-csi2":8 []
                      <- "rockchip-mipi-csi2":9 []
                      <- "rockchip-mipi-csi2":10 []
                      <- "rockchip-mipi-csi2":11 []
      
      - entity 9: stream_cif_mipi_id2 (1 pad, 11 links)
                  type Node subtype V4L flags 0
                  device node name /dev/video2
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 []
                      <- "rockchip-mipi-csi2":2 []
                      <- "rockchip-mipi-csi2":3 [ENABLED]
                      <- "rockchip-mipi-csi2":4 []
                      <- "rockchip-mipi-csi2":5 []
                      <- "rockchip-mipi-csi2":6 []
                      <- "rockchip-mipi-csi2":7 []
                      <- "rockchip-mipi-csi2":8 []
                      <- "rockchip-mipi-csi2":9 []
                      <- "rockchip-mipi-csi2":10 []
                      <- "rockchip-mipi-csi2":11 []
      
      - entity 13: stream_cif_mipi_id3 (1 pad, 11 links)
                   type Node subtype V4L flags 0
                   device node name /dev/video3
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 []
                      <- "rockchip-mipi-csi2":2 []
                      <- "rockchip-mipi-csi2":3 []
                      <- "rockchip-mipi-csi2":4 [ENABLED]
                      <- "rockchip-mipi-csi2":5 []
                      <- "rockchip-mipi-csi2":6 []
                      <- "rockchip-mipi-csi2":7 []
                      <- "rockchip-mipi-csi2":8 []
                      <- "rockchip-mipi-csi2":9 []
                      <- "rockchip-mipi-csi2":10 []
                      <- "rockchip-mipi-csi2":11 []
      
      - entity 17: rkcif_scale_ch0 (1 pad, 11 links)
                   type Node subtype V4L flags 0
                   device node name /dev/video4
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 []
                      <- "rockchip-mipi-csi2":2 []
                      <- "rockchip-mipi-csi2":3 []
                      <- "rockchip-mipi-csi2":4 []
                      <- "rockchip-mipi-csi2":5 [ENABLED]
                      <- "rockchip-mipi-csi2":6 []
                      <- "rockchip-mipi-csi2":7 []
                      <- "rockchip-mipi-csi2":8 []
                      <- "rockchip-mipi-csi2":9 []
                      <- "rockchip-mipi-csi2":10 []
                      <- "rockchip-mipi-csi2":11 []
      
      - entity 21: rkcif_scale_ch1 (1 pad, 11 links)
                   type Node subtype V4L flags 0
                   device node name /dev/video5
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 []
                      <- "rockchip-mipi-csi2":2 []
                      <- "rockchip-mipi-csi2":3 []
                      <- "rockchip-mipi-csi2":4 []
                      <- "rockchip-mipi-csi2":5 []
                      <- "rockchip-mipi-csi2":6 [ENABLED]
                      <- "rockchip-mipi-csi2":7 []
                      <- "rockchip-mipi-csi2":8 []
                      <- "rockchip-mipi-csi2":9 []
                      <- "rockchip-mipi-csi2":10 []
                      <- "rockchip-mipi-csi2":11 []
      
      - entity 25: rkcif_scale_ch2 (1 pad, 11 links)
                   type Node subtype V4L flags 0
                   device node name /dev/video6
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 []
                      <- "rockchip-mipi-csi2":2 []
                      <- "rockchip-mipi-csi2":3 []
                      <- "rockchip-mipi-csi2":4 []
                      <- "rockchip-mipi-csi2":5 []
                      <- "rockchip-mipi-csi2":6 []
                      <- "rockchip-mipi-csi2":7 [ENABLED]
                      <- "rockchip-mipi-csi2":8 []
                      <- "rockchip-mipi-csi2":9 []
                      <- "rockchip-mipi-csi2":10 []
                      <- "rockchip-mipi-csi2":11 []
      
      - entity 29: rkcif_scale_ch3 (1 pad, 11 links)
                   type Node subtype V4L flags 0
                   device node name /dev/video7
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 []
                      <- "rockchip-mipi-csi2":2 []
                      <- "rockchip-mipi-csi2":3 []
                      <- "rockchip-mipi-csi2":4 []
                      <- "rockchip-mipi-csi2":5 []
                      <- "rockchip-mipi-csi2":6 []
                      <- "rockchip-mipi-csi2":7 []
                      <- "rockchip-mipi-csi2":8 [ENABLED]
                      <- "rockchip-mipi-csi2":9 []
                      <- "rockchip-mipi-csi2":10 []
                      <- "rockchip-mipi-csi2":11 []
      
      - entity 33: rkcif_tools_id0 (1 pad, 11 links)
                   type Node subtype V4L flags 0
                   device node name /dev/video8
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 []
                      <- "rockchip-mipi-csi2":2 []
                      <- "rockchip-mipi-csi2":3 []
                      <- "rockchip-mipi-csi2":4 []
                      <- "rockchip-mipi-csi2":5 []
                      <- "rockchip-mipi-csi2":6 []
                      <- "rockchip-mipi-csi2":7 []
                      <- "rockchip-mipi-csi2":8 []
                      <- "rockchip-mipi-csi2":9 [ENABLED]
                      <- "rockchip-mipi-csi2":10 []
                      <- "rockchip-mipi-csi2":11 []
      
      - entity 37: rkcif_tools_id1 (1 pad, 11 links)
                   type Node subtype V4L flags 0
                   device node name /dev/video9
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 []
                      <- "rockchip-mipi-csi2":2 []
                      <- "rockchip-mipi-csi2":3 []
                      <- "rockchip-mipi-csi2":4 []
                      <- "rockchip-mipi-csi2":5 []
                      <- "rockchip-mipi-csi2":6 []
                      <- "rockchip-mipi-csi2":7 []
                      <- "rockchip-mipi-csi2":8 []
                      <- "rockchip-mipi-csi2":9 []
                      <- "rockchip-mipi-csi2":10 [ENABLED]
                      <- "rockchip-mipi-csi2":11 []
      
      - entity 41: rkcif_tools_id2 (1 pad, 11 links)
                   type Node subtype V4L flags 0
                   device node name /dev/video10
              pad0: Sink
                      <- "rockchip-mipi-csi2":1 []
                      <- "rockchip-mipi-csi2":2 []
                      <- "rockchip-mipi-csi2":3 []
                      <- "rockchip-mipi-csi2":4 []
                      <- "rockchip-mipi-csi2":5 []
                      <- "rockchip-mipi-csi2":6 []
                      <- "rockchip-mipi-csi2":7 []
                      <- "rockchip-mipi-csi2":8 []
                      <- "rockchip-mipi-csi2":9 []
                      <- "rockchip-mipi-csi2":10 []
                      <- "rockchip-mipi-csi2":11 [ENABLED]
      
      - entity 45: rockchip-mipi-csi2 (12 pads, 122 links)
                   type V4L2 subdev subtype Unknown flags 0
                   device node name /dev/v4l-subdev0
              pad0: Sink
                      [fmt:SBGGR10_1X10/2592x1944 field:none
                       crop.bounds:(0,0)/2592x1944
                       crop:(0,0)/2592x1944]
                      <- "rockchip-csi2-dphy0":1 [ENABLED]
              pad1: Source
                      -> "stream_cif_mipi_id0":0 [ENABLED]
                      -> "stream_cif_mipi_id1":0 []
                      -> "stream_cif_mipi_id2":0 []
                      -> "stream_cif_mipi_id3":0 []
                      -> "rkcif_scale_ch0":0 []
                      -> "rkcif_scale_ch1":0 []
                      -> "rkcif_scale_ch2":0 []
                      -> "rkcif_scale_ch3":0 []
                      -> "rkcif_tools_id0":0 []
                      -> "rkcif_tools_id1":0 []
                      -> "rkcif_tools_id2":0 []
              pad2: Source
                      -> "stream_cif_mipi_id0":0 []
                      -> "stream_cif_mipi_id1":0 [ENABLED]
                      -> "stream_cif_mipi_id2":0 []
                      -> "stream_cif_mipi_id3":0 []
                      -> "rkcif_scale_ch0":0 []
                      -> "rkcif_scale_ch1":0 []
                      -> "rkcif_scale_ch2":0 []
                      -> "rkcif_scale_ch3":0 []
                      -> "rkcif_tools_id0":0 []
                      -> "rkcif_tools_id1":0 []
                      -> "rkcif_tools_id2":0 []
              pad3: Source
                      -> "stream_cif_mipi_id0":0 []
                      -> "stream_cif_mipi_id1":0 []
                      -> "stream_cif_mipi_id2":0 [ENABLED]
                      -> "stream_cif_mipi_id3":0 []
                      -> "rkcif_scale_ch0":0 []
                      -> "rkcif_scale_ch1":0 []
                      -> "rkcif_scale_ch2":0 []
                      -> "rkcif_scale_ch3":0 []
                      -> "rkcif_tools_id0":0 []
                      -> "rkcif_tools_id1":0 []
                      -> "rkcif_tools_id2":0 []
              pad4: Source
                      -> "stream_cif_mipi_id0":0 []
                      -> "stream_cif_mipi_id1":0 []
                      -> "stream_cif_mipi_id2":0 []
                      -> "stream_cif_mipi_id3":0 [ENABLED]
                      -> "rkcif_scale_ch0":0 []
                      -> "rkcif_scale_ch1":0 []
                      -> "rkcif_scale_ch2":0 []
                      -> "rkcif_scale_ch3":0 []
                      -> "rkcif_tools_id0":0 []
                      -> "rkcif_tools_id1":0 []
                      -> "rkcif_tools_id2":0 []
              pad5: Source
                      -> "stream_cif_mipi_id0":0 []
                      -> "stream_cif_mipi_id1":0 []
                      -> "stream_cif_mipi_id2":0 []
                      -> "stream_cif_mipi_id3":0 []
                      -> "rkcif_scale_ch0":0 [ENABLED]
                      -> "rkcif_scale_ch1":0 []
                      -> "rkcif_scale_ch2":0 []
                      -> "rkcif_scale_ch3":0 []
                      -> "rkcif_tools_id0":0 []
                      -> "rkcif_tools_id1":0 []
                      -> "rkcif_tools_id2":0 []
              pad6: Source
                      -> "stream_cif_mipi_id0":0 []
                      -> "stream_cif_mipi_id1":0 []
                      -> "stream_cif_mipi_id2":0 []
                      -> "stream_cif_mipi_id3":0 []
                      -> "rkcif_scale_ch0":0 []
                      -> "rkcif_scale_ch1":0 [ENABLED]
                      -> "rkcif_scale_ch2":0 []
                      -> "rkcif_scale_ch3":0 []
                      -> "rkcif_tools_id0":0 []
                      -> "rkcif_tools_id1":0 []
                      -> "rkcif_tools_id2":0 []
              pad7: Source
                      -> "stream_cif_mipi_id0":0 []
                      -> "stream_cif_mipi_id1":0 []
                      -> "stream_cif_mipi_id2":0 []
                      -> "stream_cif_mipi_id3":0 []
                      -> "rkcif_scale_ch0":0 []
                      -> "rkcif_scale_ch1":0 []
                      -> "rkcif_scale_ch2":0 [ENABLED]
                      -> "rkcif_scale_ch3":0 []
                      -> "rkcif_tools_id0":0 []
                      -> "rkcif_tools_id1":0 []
                      -> "rkcif_tools_id2":0 []
              pad8: Source
                      -> "stream_cif_mipi_id0":0 []
                      -> "stream_cif_mipi_id1":0 []
                      -> "stream_cif_mipi_id2":0 []
                      -> "stream_cif_mipi_id3":0 []
                      -> "rkcif_scale_ch0":0 []
                      -> "rkcif_scale_ch1":0 []
                      -> "rkcif_scale_ch2":0 []
                      -> "rkcif_scale_ch3":0 [ENABLED]
                      -> "rkcif_tools_id0":0 []
                      -> "rkcif_tools_id1":0 []
                      -> "rkcif_tools_id2":0 []
              pad9: Source
                      -> "stream_cif_mipi_id0":0 []
                      -> "stream_cif_mipi_id1":0 []
                      -> "stream_cif_mipi_id2":0 []
                      -> "stream_cif_mipi_id3":0 []
                      -> "rkcif_scale_ch0":0 []
                      -> "rkcif_scale_ch1":0 []
                      -> "rkcif_scale_ch2":0 []
                      -> "rkcif_scale_ch3":0 []
                      -> "rkcif_tools_id0":0 [ENABLED]
                      -> "rkcif_tools_id1":0 []
                      -> "rkcif_tools_id2":0 []
              pad10: Source
                      -> "stream_cif_mipi_id0":0 []
                      -> "stream_cif_mipi_id1":0 []
                      -> "stream_cif_mipi_id2":0 []
                      -> "stream_cif_mipi_id3":0 []
                      -> "rkcif_scale_ch0":0 []
                      -> "rkcif_scale_ch1":0 []
                      -> "rkcif_scale_ch2":0 []
                      -> "rkcif_scale_ch3":0 []
                      -> "rkcif_tools_id0":0 []
                      -> "rkcif_tools_id1":0 [ENABLED]
                      -> "rkcif_tools_id2":0 []
              pad11: Source
                      -> "stream_cif_mipi_id0":0 []
                      -> "stream_cif_mipi_id1":0 []
                      -> "stream_cif_mipi_id2":0 []
                      -> "stream_cif_mipi_id3":0 []
                      -> "rkcif_scale_ch0":0 []
                      -> "rkcif_scale_ch1":0 []
                      -> "rkcif_scale_ch2":0 []
                      -> "rkcif_scale_ch3":0 []
                      -> "rkcif_tools_id0":0 []
                      -> "rkcif_tools_id1":0 []
                      -> "rkcif_tools_id2":0 [ENABLED]
      
      - entity 58: rockchip-csi2-dphy0 (2 pads, 2 links)
                   type V4L2 subdev subtype Unknown flags 0
                   device node name /dev/v4l-subdev1
              pad0: Sink
                      [fmt:SBGGR10_1X10/2592x1944@10000/150000 field:none]
                      <- "m01_f_ov5648 8-0036":0 [ENABLED]
              pad1: Source
                      -> "rockchip-mipi-csi2":0 [ENABLED]
      
      - entity 63: m01_f_ov5648 8-0036 (1 pad, 1 link)
                   type V4L2 subdev subtype Sensor flags 0
                   device node name /dev/v4l-subdev2
              pad0: Source
                      [fmt:SBGGR10_1X10/2592x1944@10000/150000 field:none]
                      -> "rockchip-csi2-dphy0":0 [ENABLED]
      

      打开摄像头时,串口有输出:

      [  271.647209] rockchip-mipi-csi2 fdd30000.mipi2-csi2: stream on, src_sd: 00000000cc5b661a, sd_name:rockchip-csi2-dphy0
      [  271.657719] rockchip-mipi-csi2 fdd30000.mipi2-csi2: stream ON
      [  293.181404] rockchip-mipi-csi2 fdd30000.mipi2-csi2: stream off, src_sd: 00000000cc5b661a, sd_name:rockchip-csi2-dphy0
      [  293.191999] rockchip-mipi-csi2 fdd30000.mipi2-csi2: stream OFF
      

      后台可以看到rkaiq server:

      (base) root@Ubuntu:~# ps -aux | grep aiq
      root        3356  0.0  0.0   2304   828 ?        S    13:24   0:00 /bin/sh -c /usr/bin/rkaiq_3A_server 2>&1 | logger -t rkaiq_3A
      root        3357  1.0  0.1 341528 13248 ?        Sl   13:24   0:00 /usr/bin/rkaiq_3A_server
      root        3358  0.0  0.0  11216  1504 ?        S    13:24   0:00 logger -t rkaiq_3A
      root        3422  0.0  0.0   8648  2008 pts/0    R+   13:24   0:00 grep --color=auto aiq
      

      rkaiq_3a_server的输出:

      Cound not find rkisp dev names, skipped /dev/media0
      ERR: Bad media topology for: /dev/media0
      DBG: get rkisp-isp-subdev devname: /dev/v4l-subdev3
      DBG: get rkisp-input-params devname: /dev/video19
      DBG: get rkisp-statistics devname: /dev/video18
      DBG: get rkisp_mainpath devname: /dev/video11
      rkaiq log level ff0
      
      ************************** VERSION INFOS **************************
      version release date: 2022-09-20
               AIQ:       AIQ v3.0x9.1
         IQ PARSER:       Calib v1.4.8,magicCode:1170944
      ************************ VERSION INFOS END ************************
      ERR: Bad media topology for: /dev/media2
      ERR: Bad media topology for: /dev/media3
      ERR: Bad media topology for: /dev/media4
      ERR: Bad media topology for: /dev/media5
      ERR: Bad media topology for: /dev/media6
      ERR: Bad media topology for: /dev/media7
      ERR: Bad media topology for: /dev/media8
      ERR: Bad media topology for: /dev/media9
      ERR: Bad media topology for: /dev/media10
      ERR: Bad media topology for: /dev/media11
      ERR: Bad media topology for: /dev/media12
      ERR: Bad media topology for: /dev/media13
      ERR: Bad media topology for: /dev/media14
      ERR: Bad media topology for: /dev/media15
      DBG: subscribe events from /dev/video19 success !
      DBG: device manager start
      DBG: rkisp_init engine succeed
      DBG: /dev/media1: wait stream start event...
      DBG: /dev/media1: wait stream start event success ...
      DBG: /dev/media1: wait stream stop event...
      

      v4l2-ctl抓图的log:

      sudo v4l2-ctl --verbose -d /dev/video11 --set-fmt-video=width=1920,height=1080,pixelformat='NV12' --stream-mmap=4 --set-selection=target=crop,flags=0,top=0,left=0,width=1920,height=1080 --stream-to=out1.yuv
      VIDIOC_QUERYCAP: ok
      VIDIOC_G_FMT: ok
      VIDIOC_S_FMT: ok
      Format Video Capture Multiplanar:
              Width/Height      : 1920/1080
              Pixel Format      : 'NV12' (Y/CbCr 4:2:0)
              Field             : None
              Number of planes  : 1
              Flags             :
              Colorspace        : Default
              Transfer Function : Default
              YCbCr/HSV Encoding: Default
              Quantization      : Full Range
              Plane 0           :
                 Bytes per Line : 1920
                 Size Image     : 3110400
      VIDIOC_G_SELECTION: ok
      VIDIOC_S_SELECTION: ok
                      VIDIOC_REQBUFS returned 0 (Success)
                      VIDIOC_QUERYBUF returned 0 (Success)
                      VIDIOC_QUERYBUF returned 0 (Success)
                      VIDIOC_QUERYBUF returned 0 (Success)
                      VIDIOC_QUERYBUF returned 0 (Success)
                      VIDIOC_QBUF returned 0 (Success)
                      VIDIOC_QBUF returned 0 (Success)
                      VIDIOC_QBUF returned 0 (Success)
                      VIDIOC_QBUF returned 0 (Success)
                      VIDIOC_STREAMON returned 0 (Success)
      

      (然后就卡死在那里了,Ctrl+C之后显示streaming off,out1.yuv大小为0)
      请问一下大佬们有遇到过类似的情况吗,感激不尽!!

      G 1 Reply Last reply Reply Quote 0
      • G
        george @traceback
        last edited by

        @traceback
        使用QV4L2测试一下节点,确实是否可以正常获取图像,除了型号以外,不同的sensor镜头也会对图像产生影响。

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          traceback @george
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          @george 屏幕截图 2025-01-10 131801.png 屏幕截图 2025-01-10 131826.png
          您好,这是qv4l2的截图

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            traceback @george
            last edited by

            @george 您好,我又确认了一下,在用systemctl关闭rkaiq的服务之后,读取/dev/video11就是正常的未经isp处理的图像,颜色非常暗,然后开启rkaiq_3a_server之后图像就是全黑的,使用v4l2抓图像是没有读出来数据,感觉不像是读出来了全黑的图

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