# How to identify objects using the tool in node-red

**URL:** <https://discourse.nodered.org/t/how-to-identify-objects-using-the-tool-in-node-red/59134>\
**Category:** General\
**Tags:** function-node\
**Created:** [28 February 2022 17:04 UTC](https://discourse.nodered.org/t/how-to-identify-objects-using-the-tool-in-node-red/59134 "2022-02-28T17:04:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Nam](https://avatars.discourse-cdn.com/v4/letter/n/41988e/32.png) [@Nam](https://discourse.nodered.org/u/Nam)\
**Post date:** [28 February 2022 17:04 UTC](https://discourse.nodered.org/t/how-to-identify-objects-using-the-tool-in-node-red/59134/1 "2022-02-28T17:04:29Z")

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Hi engineers in the community, I am doing a project that combines Node-red with PLC to classify objects, namely round, square, triangle, can anyone give me suggestions? I refer to OpenCV there is a command " Contour Dectection ", or some way in node-red that I don't know, I use USB camera Basler, thanks everyone and give me suggestions.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [29 April 2022 17:05 UTC](https://discourse.nodered.org/t/how-to-identify-objects-using-the-tool-in-node-red/59134/2 "2022-04-29T17:05:00Z")

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