Hello everyone, I am working on a project related to visual object dropping, in which I need to use LabVIEW FPGA Vision. However, I have encountered a problem with particle analysis. The details are as follows: First, here is a screenshot of my FPGA program. I referred to the particle analysis example.

The key point is the 'Retain Overlap' feature. When I enable this button, the particle information I read via FIFO on the RT is as follows:

When I turn off this button, it does not use the overlap algorithm. Therefore, when an object drops and exactly touches the edge, it will be split into two particle information entries, as shown in the figure (I am currently using a line scan camera with a resolution of 1400×480).

So, I would like to ask experienced technical experts in this field to tell me how to solve this problem — how to enable Retain Overlap without encountering negative Top values.I would be very grateful.