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Hello and thank you for taking the time to answer my question. I deployed Jasmin's solution and developed my own custom message. The ROI message has the following description (Called mva_roi, and belongs in the package mva_msgs)

int32 x int32 y int32 w int32 h int32 id int32 average_area

Then, as Jasmin suggested I defined an other message that contains a list of mva_roi messages:

mva_msgs/mva_roi[] message

Your help has been much appreciated. Thank you.

Danai

Hello and thank you for taking the time to answer my question. I deployed Jasmin's solution and developed my own custom message. The ROI message has the following description (Called mva_roi, and belongs in the package mva_msgs)

int32 x int32 y int32 w int32 h int32 id int32 average_area

Then, as Jasmin suggested I defined an other message that contains a list of mva_roi messages:

mva_msgs/mva_roi[] message

I have tested it and it works, so I am now able to transfer detection and tracking messages between different nodes. Your help has been much appreciated. Thank you.

Danai