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    RAW-MIPI-SC53M maximum exposure length

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    • veye_xummV Offline
      veye_xumm @Izaak
      last edited by

      @izaak In fact, in the Video streaming mode, it is impossible to achieve an exposure time of 1 second. I conducted a test in the 2 - lane raw8 format, as follows:

      pi@raspberrypi:~/mvcamera/mv_tools_rpi $ ./mv_mipi_i2c_new.sh -w fps 0.01 
      w fps 0.01
      pi@raspberrypi:~/mvcamera/mv_tools_rpi $ ./mv_mipi_i2c_new.sh -r fps      
      r fps is 3.48 fps
      pi@raspberrypi:~/mvcamera/mv_tools_rpi $ ./mv_mipi_i2c_new.sh -w metime 1000000
      w manual exp time is 1000000 us 
      pi@raspberrypi:~/mvcamera/mv_tools_rpi $ ./mv_mipi_i2c_new.sh -r exptime       
      r current exptime is 287129 us
      

      It can be achieved in Pulse Trigger Mode. However, due to the excessive accumulated dark current, the signal noise will be very high. I don't think it has practical value.

      Questions will be answered as soon as possible, please be patient.
      如果你使用中文,请直接用中文提问。
      May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

      G 1 Reply Last reply Reply Quote 0
      • G Offline
        golden0514 @veye_xumm
        last edited by

        @veye_xumm 这种情况下如何采集图像,使用mv_mipi_i2c_new.sh可以设置曝光时间,但是如何采集,没有demo。

        veye_xummV 1 Reply Last reply Reply Quote 0
        • veye_xummV Offline
          veye_xumm @golden0514
          last edited by

          @golden0514 你的嵌入式平台是什么?

          Questions will be answered as soon as possible, please be patient.
          如果你使用中文,请直接用中文提问。
          May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

          G 1 Reply Last reply Reply Quote 0
          • G Offline
            golden0514 @veye_xumm
            last edited by

            @veye_xumm 树莓派4b

            veye_xummV 1 Reply Last reply Reply Quote 0
            • veye_xummV Offline
              veye_xumm @golden0514
              last edited by

              @golden0514
              可以参考这篇文章进行取图。
              https://wiki.veye.cc/index.php/Mv_series_camera_appnotes_4_rpi/zh

              Questions will be answered as soon as possible, please be patient.
              如果你使用中文,请直接用中文提问。
              May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

              G 1 Reply Last reply Reply Quote 0
              • G Offline
                golden0514 @veye_xumm
                last edited by

                @veye_xumm 按照这篇文章里修改曝光时间没有效果,设置成1或者255,采集的图像几乎不变。

                veye_xummV 1 Reply Last reply Reply Quote 0
                • veye_xummV Offline
                  veye_xumm @golden0514
                  last edited by

                  @golden0514 这篇文章没有修改曝光时间的东西吧? 有设置格式,分辨率,帧率,取图相关的内容。

                  Questions will be answered as soon as possible, please be patient.
                  如果你使用中文,请直接用中文提问。
                  May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                  G 1 Reply Last reply Reply Quote 0
                  • G Offline
                    golden0514 @veye_xumm
                    last edited by

                    @veye_xumm 刚才试过了,问题解决,最大曝光时间0.3″,基本够用了

                    veye_xummV 1 Reply Last reply Reply Quote 0
                    • veye_xummV Offline
                      veye_xumm @golden0514
                      last edited by

                      @golden0514 你可以进一步将fps设置小,相应的最大曝光时间也会拉长。

                      Questions will be answered as soon as possible, please be patient.
                      如果你使用中文,请直接用中文提问。
                      May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                      G 1 Reply Last reply Reply Quote 0
                      • G Offline
                        golden0514 @veye_xumm
                        last edited by

                        @veye_xumm IMG_20250715_095052.jpg IMG_20250715_095117.jpg
                        曝光时间设置还是有问题,fps一直是30,最大曝光时间一直是33ms,264m。
                        请看看怎么才能调整长一些曝光时间,比如1s。

                        veye_xummV 1 Reply Last reply Reply Quote 0
                        • veye_xummV Offline
                          veye_xumm @golden0514
                          last edited by

                          @golden0514 你好。
                          我们相机有一个底层逻辑,fps参数会优先于曝光时间设置。
                          如果你想要1秒的曝光时间,需要先将帧率设置为1帧/秒,然后再设置曝光时间即可。

                          Questions will be answered as soon as possible, please be patient.
                          如果你使用中文,请直接用中文提问。
                          May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                          1 Reply Last reply Reply Quote 0

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