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PVCAM
3.9.x
Programmable Virtual Camera Access Method library
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This feature allows the camera to insert various metadata directly into the frame buffer. The metadata is generated by the camera itself, appended to the buffer and transferred together with the image data inside the same buffer. The metadata includes all the information necessary to reconstruct the frame along with other data-describing information such as precise HW timestamps, exposure time or other related information.
The Frame Metadata feature is enabled by the PARAM_METADATA_ENABLED parameter. This feature is essential for Multiple ROI Acquisition or Centroids. However, for a single ROI acquisition the Metadata can be disabled to instruct the PVCAM to return the raw frame buffer without any additional information.
Once enabled, the pl_exp_setup_seq and pl_exp_setup_cont functions will report slightly larger frame sizes and the caller is required to allocate the frame buffer accordingly.
Please note that after enabling the feature, the frame data will no longer contain raw image data only and cannot be directly displayed without additional processing.
To properly display the metadata-enabled frame, the following sequence of steps should be followed:
Please, refer to the SDK example applications to obtain more information on how to use this feature.