Imencode error (Opencv 4.7)

[BryanBetancur]

I upgrade Opencv to 4.7 release but when I try to publish a compressed image topic I get this error in CompressedPublisher node:

[ERROR] [1680555257.247563111] [CompressedPublisher]: OpenCV(4.7.0) /root/opencv/modules/imgcodecs/src/loadsave.cpp:1145: error: (-2:Unspecified error) in function 'bool cv::imencode(const String&, cv::InputArray, std::vector&, const std::vector&)'

> Encoding 'params' must be key-value pairs:
> '(params.size() & 1) == 0'
> where
> 'params.size()' is 3

I followed the problem to the file opencv/modules/imgcodecs/src/loadsave.cpp line 1145 where they add new validations to the params argument. By now I commented that line in opencv library to continue working but I'm not sure how to manage it from image_transport_plugins.

[kevinstoesser]

I have a similar problem, have you solved it?

[jtaveau]

Any news on that?

[daenny]

I found the issue:
only 1.14.0 is released. The issue was fixed in 1.15.0, which is tagged in this repo, but that was never properly released here:
https://github.com/ros-gbp/image_transport_plugins-release