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    sc130在214fps下抓拍不到闪光源

    Scheduled Pinned Locked Moved CS MIPI camera
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    • X Offline
      xhamigua @veye_xumm
      last edited by xhamigua

      @veye_xumm 现在是用v4l2-ctl --device=/dev/video1 --set-ctrl frame_rate=214
      手动曝光4000 用i2c_4write 8 0x3b 0xC10 4000
      手动增益0 mv_mipi_i2c.sh -w -f mgain -b 8 -p1 0.0
      这样有时能抓拍到 上面的电弧图片

      测试将所有帧图片缓存下来 有时只有一帧画面有电弧闪光 再或者就是一张也没有,没有渐变过程

      X veye_xummV 2 Replies Last reply Reply Quote 0
      • X Offline
        xhamigua @xhamigua
        last edited by xhamigua

        抓拍过程是 214帧开始采集5秒,同时立即开始闪光 5秒内可采集约1075张 用上面的参数测试
        下面是抓拍到一帧时(大部分抓不到) 但亮度比较强看不到渐变过程。

        829a763e-5db1-4ffc-9a40-9f71d4a74041-图片.png

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        • veye_xummV Offline
          veye_xumm @xhamigua
          last edited by

          已电话沟通,建议通过调节roi来提高帧率。

          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.)

          X 1 Reply Last reply Reply Quote 0
          • X Offline
            xhamigua @veye_xumm
            last edited by

            改成640x512 取图 能抓到了 87ff36b9-987b-4f93-a81a-2e7eb455a1d1-图片.png

            这个是用自动曝光 可以抓到 第一张和第三张 这种需要的 。曝光不知道还有没有可调整的空间

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

              @xhamigua
              你这种应用模式,需要改成手动曝光。
              具体用多大的曝光时间,需要你去实际测试一下。
              https://wiki.veye.cc/index.php/Mv_mipi_i2c.sh_user_guide

              expmode 设置为0
              gainmode 设置为0
              metime 调节曝光时间
              mgain 调节增益

              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.)

              X 1 Reply Last reply Reply Quote 0
              • X Offline
                xhamigua @veye_xumm
                last edited by

                @veye_xumm said in sc130在214fps下抓拍不到闪光源:

                metime

                cdbbdce1-60e7-427e-b2d2-9a6544250258-图片.png

                曝光时间单位是 微秒吗

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

                  @xhamigua 是的

                  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.)

                  X 1 Reply Last reply Reply Quote 0
                  • X Offline
                    xhamigua @veye_xumm
                    last edited by

                    @veye_xumm 用gst采集一段视频效果 帧率为什么不是200多帧
                    859437f6-da4d-4e93-9cd0-e3f82804c262-图片.png

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

                      @xhamigua 编码效率的问题啊,缓存的问题啊,很多因素。

                      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.)

                      X 1 Reply Last reply Reply Quote 0
                      • X Offline
                        xhamigua @veye_xumm
                        last edited by

                        @veye_xumm 有没有 全帧率缓存的方法 存下录制视频

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

                          @xhamigua 如果你抓的时间不长的话,建议你写程序,把raw数据全部缓存到内存里面,然后再慢慢编码。

                          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.)

                          X 1 Reply Last reply Reply Quote 0
                          • X Offline
                            xhamigua @veye_xumm
                            last edited by

                            @veye_xumm 是的 非阻塞缓存后写图,已经解决了。抓拍的图像基本模拟一次就有一张抓拍,因为闪一次时间是1ms 所以只抓到一张也是合理的。

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