Color RGB image format is flipped in ROS2 Humble

[cardboardcode]

Issue Description

The following image is outputted when running default virtual_camera test image with EPD on ROS2 Humble:

Source of Error

For some reason, the RGB format of incoming sensor_msgs::msg::Image is flipped as shown by the output image.

[cardboardcode]

Narrowed down the issue to the cv_bridge conversion.

sensor_msgs::msg::Image::SharedPtr output_msg =
      cv_bridge::CvImage(std_msgs::msg::Header(), "bgr8", resultImg).toImageMsg();
    visual_pub->publish(*output_msg);

[cardboardcode]

Solution :partying_face:

Include the following line before the the cv_bridge conversion as show above:

cv::cvtColor(resultImg, resultImg, CV_BGR2RGB); // Include this line.

sensor_msgs::msg::Image::SharedPtr output_msg =
      cv_bridge::CvImage(std_msgs::msg::Header(), "bgr8", resultImg).toImageMsg();