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camera_aravis unable to read images

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Hi, I'm using Basler aceA2040 camera. I'm able to use pylon to view the image, but when I run the node, then I get the following error. [ INFO] [1459415796.505253469]: Attached cameras: [ INFO] [1459415797.507343350]: # Interfaces: 2 [ INFO] [1459415797.507401522]: # Devices: 1 [ INFO] [1459415797.507439594]: Device0: Basler-21717060 [ INFO] [1459415797.508187757]: Opening: (any) [ INFO] [1459415797.649533133]: Opened: Basler-21717060 [ INFO] [1459415797.681021939]: Set gain = 36.000000 [ INFO] [1459415797.683831732]: Camera does not support FocusPos. [ INFO] [1459415799.696795557]: Using Camera Configuration: [ INFO] [1459415799.696895442]: --------------------------- [ INFO] [1459415799.697275209]: Vendor name = Basler [ INFO] [1459415799.697664075]: Model name = acA2040-25gc [ INFO] [1459415799.698057562]: Device id = 21717060 [ INFO] [1459415799.698113163]: Sensor width = 2048 [ INFO] [1459415799.698151466]: Sensor height = 2048 [ INFO] [1459415799.698195014]: ROI x,y,w,h = 0, 0, 2046, 2046 [ INFO] [1459415799.698259450]: Pixel format = yuv422packed [ INFO] [1459415799.698318762]: BytesPerPixel = 2 [ INFO] [1459415799.698932602]: Acquisition Mode = Continuous [ INFO] [1459415799.699541695]: Trigger Mode = Off [ INFO] [1459415799.700273893]: Trigger Source = Line1 [ INFO] [1459415799.700332053]: Can set FrameRate: True [ INFO] [1459415799.701400025]: AcquisitionFrameRate = 100 hz [ INFO] [1459415799.701450797]: Can set Exposure: True [ INFO] [1459415799.701492482]: Can set ExposureAuto: True [ INFO] [1459415799.701533147]: Exposure = 2000 us in range [24,1e+07] [ INFO] [1459415799.701571927]: Can set Gain: True [ INFO] [1459415799.701605875]: Can set GainAuto: True [ INFO] [1459415799.701642581]: Gain = 36.000000 % in range [36.000000,512.000000] [ INFO] [1459415799.701679707]: Can set FocusPos: False [ INFO] [1459415799.702172955]: Network mtu = 1500 [ INFO] [1459415799.702224649]: --------------------------- [ INFO] [1459415800.060123136]: using default calibration URL [ INFO] [1459415800.060201986]: camera calibration URL: file:///home/students/.ros/camera_info/21717060.yaml [ INFO] [1459415800.060287986]: Unable to open camera calibration file [/home/students/.ros/camera_info /21717060.yaml] [ WARN] [1459415800.060328945]: Camera calibration file /home/students/.ros/camera_info/21717060.yaml not found. [ WARN] [1459415800.804103698]: Frame error: ARV_BUFFER_STATUS_TIMEOUT I found a similar issue which suggested to generate a calibration file. I'm not sure how to do that. Could someone please suggest how to generate the correct calibration file needed by this node? ( I'm running the camera_aravis prackage). [Issue #4 Github](https://github.com/strawlab/camera_aravis/issues/4) Thanks

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