Camera IP address integrity

[christopolise]

When testing the camera in conjunction with all the other demos (and even by itself), there are several issues.

• The camera feeds load well if they are found
• If the feed is not found "No Camera" is printed to screen
• Toggling between feeds then causes artifacts to appear when drawing "No camera"

Some of the errors from OpenCV can be found in the generated logs.

[schielb]

Created bryson_camera_2 branch to work on it

[christopolise]

New error associated with the camera coming unplugged/not finding the stream:

global /tmp/pip-wheel-8c7uejek/opencv-python_88dbbad412c5416b992ae69de26299d6/opencv/modules/videoio/src/cap.cpp (166) open VIDEOIO(CV_IMAGES): raised OpenCV exception:

OpenCV(4.6.0) /tmp/pip-wheel-8c7uejek/opencv-python_88dbbad412c5416b992ae69de26299d6/opencv/modules/videoio/src/cap_images.cpp:253: error: (-5:Bad argument) CAP_IMAGES: can't find starting number (in the name of file): http://192.168.0.178:81/stream in function 'icvExtractPattern'