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    MV-MIPI-IMX178M+树莓派4B+OSPI5.15,官网例程不能使用

    Scheduled Pinned Locked Moved Raspberry Pi App Software
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    • M Offline
      maifengW2023 @veye_xumm
      last edited by

      @veye_xumm
      你说这个也可以试试,imx178这个是非触发模式下,能看到的,而且效果也不错,现在是外触发模式,咱们哪个触发延时设置后没有效果,不清楚问题出在哪里,我今天再做一下试验,外触发信号的延迟放到我系统处理一下看看什么效果,IMX264我也在关注一下,264是全局曝光的吧

      veye_xummV 1 Reply Last reply Reply Quote 0
      • veye_xummV Offline
        veye_xumm @maifengW2023
        last edited by

        @maifengw2023 是的IMX264是全局曝光。

        @maifengw2023 said in MV-MIPI-IMX178M+树莓派4B+OSPI5.15,官网例程不能使用:

        我们是采用5Hz、20Hz的频率发射一束光,触发信号后50us出光,

        我感觉你这个50us的时间太短了。sensor绝大部分行还没有开始曝光呢,你的激光已经完成发射了。
        这个时间可以拉长吗?

        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.)

        M 1 Reply Last reply Reply Quote 0
        • M Offline
          maifengW2023 @veye_xumm
          last edited by

          @veye_xumm
          光的时间不能拉长,曝光的时间可以拉长,这个是脉冲光,卷帘的刷新模式是怎样的?触发一次就曝光一次还是不停的循环曝光,整个探测器刷新一遍的时间是多少?

          veye_xummV 1 Reply Last reply Reply Quote 0
          • veye_xummV Offline
            veye_xumm @maifengW2023
            last edited by

            @maifengw2023 我的意思不是增加光的时间,是增加触发信号和激光发射之间的间隔。

            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.)

            M 1 Reply Last reply Reply Quote 0
            • M Offline
              maifengW2023 @veye_xumm
              last edited by maifengW2023

              @veye_xumm
              这个可以,没问题

              veye_xummV 1 Reply Last reply Reply Quote 0
              • veye_xummV Offline
                veye_xumm @maifengW2023
                last edited by

                @maifengw2023 你使用的分辨率,帧率说一下,我给计算一下。

                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.)

                M 1 Reply Last reply Reply Quote 0
                • M Offline
                  maifengW2023 @veye_xumm
                  last edited by maifengW2023

                  @veye_xumm
                  分辨率是1920*1080,帧率用的10跟50;外触发是10,流模式是50

                  veye_xummV 1 Reply Last reply Reply Quote 0
                  • veye_xummV Offline
                    veye_xumm @maifengW2023
                    last edited by

                    @maifengw2023
                    首先你所说的外触发帧率是10,应该是你理想中的触发间隔,而不是相机的帧率。相机的帧率继续使用50fps的配置是没问题的。
                    我给你解释一下rolling shutter。
                    按照1920*1080分辨率,50fps的配置。我计算了一下,每行的传输周期大约是18us。
                    也就是说,收到触发信号之后,第一行开始曝光,然后延迟18us第二行开始曝光,再延迟18us后第三行开始曝光。

                    所以我的建议还是你选用global shutter的相机进行开发。全局曝光相机的好处是,收到触发信号之后,立刻开始全局一起曝光(不设置触发延迟的情况下),到约定的曝光时间完成之后,立刻同时结束曝光。时序上可控性更好。

                    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.)

                    M 1 Reply Last reply Reply Quote 0
                    • M Offline
                      maifengW2023 @veye_xumm
                      last edited by

                      @veye_xumm
                      这个178的确实用不成,所有参数都试了,效果不行,想换个264的,你们店铺不给更换,能不能帮忙说一下,我换一个264的,这个178的在手上也是浪费,用不成

                      veye_xummV 1 Reply Last reply Reply Quote 0
                      • veye_xummV Offline
                        veye_xumm @maifengW2023
                        last edited by

                        @maifengw2023 好

                        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.)

                        M 1 Reply Last reply Reply Quote 0
                        • M Offline
                          maifengW2023 @veye_xumm
                          last edited by

                          @veye_xumm
                          感谢!

                          1 Reply Last reply Reply Quote 0

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