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    相机硬触发,采集图像

    Scheduled Pinned Locked Moved VEYE MIPI camera
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    • L Offline
      lin
      last edited by

      mv_mipi_i2c.sh 设置硬触发,帧率设置60fps,为什么ar0234m相机不能采集20张图像?
      7f396153-f376-46df-9ba5-ce6453716370-image.png
      934e367e-cd95-492c-882c-12c2d0a9b90d-image.png

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

        @lin
        你好,camera会先曝光,然后输出(1/帧率s),输出完成接受下一个触发信号。
        因此你需要考虑曝光时间的存在。

        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.)

        L 1 Reply Last reply Reply Quote 0
        • L Offline
          lin @veye_xumm
          last edited by

          @veye_xumm 可以具体说明一下,设置相机采集二十张图像,应该具体设置时间,触发时间怎么计算,现在设置的是每20ms触发一次上升沿,相机设置的是60fps

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

            @lin
            你现在曝光时间是多少?手动的还是自动的?

            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.)

            L 1 Reply Last reply Reply Quote 0
            • L Offline
              lin @veye_xumm
              last edited by

              @veye_xumm 我试了一下改为手动1000us,可以采集到20张了,不能设置为自动模式吗,我将自动增益以及自动曝光都改为了手动

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

                @lin
                f5d9dd0f-cd1a-459a-a2d1-db1903a79383-image.png
                最小触发间隔,大体上是曝光时间+传输时间(帧率分之一)+零碎的其他时间的和。

                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.)

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

                  6939a1b1-9de5-4c5b-be13-1590477806a0-image.png
                  5335453c-eb23-4756-a095-371dcd67ccf3-image.png

                  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.)

                  L 1 Reply Last reply Reply Quote 0
                  • L Offline
                    lin @veye_xumm
                    last edited by

                    @veye_xumm 799ba3d6-b0f4-4bc8-8f89-b25c5b9c0f3b-image.png
                    这个frame_time 的时间请问是多少? 同时TTT 的范围是多少?

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

                      @lin
                      这个frame_time 的时间请问是多少?
                      --可以用帧率分之一来计算。

                      同时TTT 的范围是多少?
                      -- 大于这个公式的值就可以。

                      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.)

                      L 1 Reply Last reply Reply Quote 0
                      • L Offline
                        lin @veye_xumm
                        last edited by

                        @veye_xumm said in 相机硬触发,采集图像:

                        以用帧率分之一来计算。
                        曝光设置为2ms,图像太暗,frame_time 可以通过调节mipi的速率来缩短时间吗?除了提高曝光时间外,有其他方法,设置保证采集图像速率的同时,提高亮度吗

                        veye_xummV 2 Replies Last reply Reply Quote 0
                        • veye_xummV Offline
                          veye_xumm @lin
                          last edited by

                          @lin 不行。
                          建议你降低一下触发帧率,给一个比较长的曝光时间。

                          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
                          • veye_xummV Offline
                            veye_xumm @lin
                            last edited by

                            @lin 还有一个办法,就是把相机配置为4lane 模式,这种情况下最高可以达到满分辨率的120fps。
                            然后在这个模式下,你配置为60fps去运行。 就拥有了差不多1/120的最大曝光时间。

                            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.)

                            L 2 Replies Last reply Reply Quote 0
                            • L Offline
                              lin @veye_xumm
                              last edited by

                              @veye_xumm 好的,谢谢

                              1 Reply Last reply Reply Quote 0
                              • L Offline
                                lin @veye_xumm
                                last edited by

                                @veye_xumm said in 相机硬触发,采集图像:

                                @lin 还有一个办法,就是把相机配置为4lane 模式,这种情况下最高可以达到满分辨率的120fps。
                                然后在这个模式下,你配置为60fps去运行。 就拥有了差不多1/120的最大曝光时间。

                                这个曝光时间是根据最小触发时间减去帧率分之一再减去TTF+TFFV可以得到,你说的配置为60fps运行,就可以达到1/120的曝光时间是什么意思?

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

                                  @lin 触发模式下,曝光和图像输出是顺序执行,而不是并行执行。因此,相机配置为120fps,那么每一帧图像输出时间大约是1/120秒。触发信号给到60hz,那么每一帧可以分配到的最大曝光时间大约也是1/120秒。
                                  换句话说,接收到一个触发信号,1/120秒曝光,1/120秒输出,加起来大约占据1/60秒。完成之后,刚好来得及响应下一个触发信号。
                                  当然了,我这个说法很粗略,忽略了TTF+TFFV,实际上还需考虑这两个时间的影响。

                                  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.)

                                  L 1 Reply Last reply Reply Quote 0
                                  • L Offline
                                    lin @veye_xumm
                                    last edited by

                                    @veye_xumm ar0234M相机可以配置成120fps吗?有参考资料吗?

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

                                      @lin
                                      先配置lanenum,然后配置fps

                                      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.)

                                      L 1 Reply Last reply Reply Quote 0
                                      • L Offline
                                        lin @veye_xumm
                                        last edited by

                                        @veye_xumm 有具体的参考资料吗,这个lanenum在哪里改呀?

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

                                          @lin
                                          看一下我刚才发的,lanenum和fps都是超链接,点一下。

                                          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.)

                                          L 1 Reply Last reply Reply Quote 0
                                          • L Offline
                                            lin @veye_xumm
                                            last edited by

                                            @veye_xumm
                                            d0cfd406-aa81-4089-8994-1d65e19b3eed-image.png
                                            310c113e-91f1-4f6b-9744-537c5fa2ebac-image.png
                                            好像不能设置成120fps?

                                            veye_xummV 1 Reply Last reply Reply Quote 0

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