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    IMX 178 树莓派出图错误

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    • X
      xiaoxun @veye_xumm last edited by

      @veye_xumm said in IMX 178 树莓派出图错误:

      v4l2-ctl --set-selection=target=crop,top=0,left=0,width=2816,height=2164

      是在用之前必须要配置好 ROI 吗?

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      • veye_xumm
        veye_xumm @xiaoxun last edited by

        @xiaoxun 是的。因为set-format并不能提供配置roi的全部功能,所以在驱动实现中通过set selection接口做了roi配置。

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        • X
          xiaoxun last edited by

          imx78 树莓派
          export DISPLAY=:0

          v4l2-ctl --set-selection=target=crop,top=0,left=0,width=1920,height=1080
          v4l2-ctl -d /dev/video0 --set-fmt-video=width=1920,height=1080,pixelformat=UYVY

          gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,format=(string)UYVY, width=(int)1920, height=(int)1080, framerate=(fraction)22/1" ! v4l2convert ! "vi
          deo/x-raw,format=(string)NV12" ! autovideosink sync=false -v

          在屏幕上边并没有显示,是哪操作的不正确吗?

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          • X
            xiaoxun last edited by

            37d0f1639b90d26fae987779fe38100.png

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            • veye_xumm
              veye_xumm @xiaoxun last edited by

              @xiaoxun
              我觉得你的操作没有问题。现在这个pipeline是作为一种调试手段,其中用到的数据格式转换采用的是软件运算的方式,所以效率比较低。
              我测试了一下,改成640*480还是比较流畅的。
              你使用的树莓派型号是什么?

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              • X
                xiaoxun @veye_xumm last edited by

                @veye_xumm CM4 的

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                • X
                  xiaoxun last edited by

                  我将大小该到了 480*320 还是上图的显示 ,没有出图

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                  • veye_xumm
                    veye_xumm @xiaoxun last edited by

                    @xiaoxun 试一下640*480

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                    • X
                      xiaoxun @veye_xumm last edited by

                      @veye_xumm 都试过了,gstream 测试还是上图 那种http://forum.veye.cc/assets/uploads/files/1680582973964-37d0f1639b90d26fae987779fe38100.png

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

                        @xiaoxun 奇怪,我这边没问题啊。
                        你试试opencv这个 6.6.5.2:
                        http://wiki.veye.cc/index.php/Mv_series_camera_appnotes_4_rpi/zh#.E4.BD.BF.E7.94.A8opencv.E9.A2.84.E8.A7.88GREY.E6.A0.BC.E5.BC.8F.E5.9B.BE.E5.83.8F

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