Navigation system with mono-camera based traffic sign tracking and positioning mechanism and method of operation thereof

A navigation system comprising:

• a communication unit configured to receive multiple frames, including a first frame and a second frame, of images;
• and
• a control unit, coupled to the communication unit, configured to:
• detect a traffic sign from the images between the first frame and the second frame based on a sign recognition model;
• extract a first image from the first frame and a second image from the second frame;
• match the traffic sign is the same in the first image and the second image based on a similarity model;
• generate a sign location of the traffic sign with an inertial measurement unit reading based on the first image and the second image;
• generate a vehicle relative position associated with a mono-camera for receiving the multiple frames,
• generate camera compensation for the mono-camera;
• and
• generate a global coordinate for the sign location, including triangulating the sign location based on a vehicle relative position, a camera compensation, and a matching for displaying on a navigation map.

A non-transitory computer readable medium including instructions executable by a control circuit for a navigation system, the instructions comprising:

• receiving multiple frames, including a first frame and a second frame, of images;
• detecting a traffic sign from the images between the first frame and the second frame based on a sign recognition model;
• extracting a first image from the first frame and a second image from the second frame;
• matching the traffic sign is the same in the first image and the second image based on a similarity model;
• generating a sign location of the traffic sign with an inertial measurement unit reading based on the first image and the second image;
• generating a vehicle relative position associated with a mono-camera for receiving the multiple frames:
• generating a camera compensation for the mono-camera;
• and
• generating a global coordinate for the sign location, including triangulating the sign location based on a vehicle relative position, a camera compensation and a matching for displaying on a navigation map.