gocv.FindContours return PointVector instead of []PointVector

[svenczbg]

Description

gocv.FindContours is supposed to return a []PointVector but returns just one PointVector

Steps to Reproduce

https://github.com/hybridgroup/gocv/blob/3f4d73bc6a6e20e4880c0ea208f3e80880e1c725/cmd/motion-detect/main.go#L86-L100

The location of the error is here: https://github.com/hybridgroup/gocv/blob/release/imgproc.cpp#L223

Your Environment

• Operating System and version: Raspberry Pi OS, Linux Kernel 5.15.84-v8+
• OpenCV version used: 4.8.0
• How did you install OpenCV? Compiled acc. to https://qengineering.eu/install-opencv-on-raspberry-pi.html
• GoCV version used: 0.34.0
• Go version: go version go1.21.0 linux/arm64
• Did you run the env.sh or env.cmd script before trying to go run or go build?

[svenczbg]

sorry, my fault: I didn't noticed PointVector vs PointsVector