Check out the Line tracking API for more details.

Note, this response can have up to three different feature sections, one for vectors (if vector(s) exist), one for intersections (if intersection(s) exist) and one for barcodes (if barcode(s) exist) in the image. Each feature section begins with a feature-type. The feature-length is next, which indicates how many bytes are in the feature-data. The feature-data is last, which has the data associated with the feature. Sometimes the feature-data section will have more than one of the given feature type, for example, there may be three barcodes, in which case the three barcodes will be concatenated in the feature-data without any bytes between them.

For the specific feature data types and composition, please consult the Pixy2Line.h file.