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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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    • veye_xummV Offline
      veye_xumm @xhamigua
      last edited by

      @xhamigua 你现在是怎么触发抓拍的?怎样跟闪光灯做的同步?另外曝光参数是如何设置的?

      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 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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