Video with Map Overlay on Pedestrian Carried Device

Abstract

A system and method for placing reference locators on a streaming video image taken from a camera mounted on a vehicle. Sensors monitoring the camera field of view and direction of the optical axis along with sensors monitoring the vehicle's position are used to generate a video overlay having various indicia. The calculated positions of the indicia may be compared to the position of landmarks taken from the video image to compensate for any inaccuracies in the calculated position taken from the various sensors.

What is claimed is: 
     
         1 . A system comprising:
 a device having device position sensors;   a first video camera mounted to said device and producing a first video feed in a first camera field of view;   a field of view calculator that:
 uses said device position sensors to produce a first calculated field of view; 
 determines that a first landmark is approximately located within said first camera field of view; 
 determines a calculated position of said first landmark within said first camera field of view; 
 finds the actual position of said landmark within said first video feed; 
 compares said calculated position and said actual position of said landmark to determine a set of correction factors; and 
 uses said correction factors to change said first calculated field of view and generate a corrected field of view; 
 an indicia generator that uses said corrected field of view to produce at least one indicator within said first camera field of view; 
 a video display that displays said first video feed and said indicator. 
   
     
     
         2 . The system of  claim 1 , said device being mounted to a vehicle. 
     
     
         3 . The system of  claim 1 , said device being carried by a pedestrian. 
     
     
         4 . The system of  claim 1 , said landmark comprises a stationary object. 
     
     
         5 . The system of  claim 1 , said landmark comprises a movable object. 
     
     
         6 . The system of  claim 5 , said landmark comprises a second vehicle having a set of second vehicle sensors in communication with said field of view calculator. 
     
     
         7 . The system of  claim 1 , said device position sensors comprises at least one from a group comprising a global positioning system receiver, an altimeter, a compass, and a gyroscope. 
     
     
         8 . The system of  claim 1 , said device further comprising a zoom sensor. 
     
     
         9 . The system of  claim 1 , said indicia comprises at least one from a group comprising latitude and longitude coordinates, a street name, a building address, a building name, and a vehicle. 
     
     
         10 . The system of  claim 1 , said first video camera being fixed mounted to said device. 
     
     
         11 . The system of  claim 1 , said first video camera being movably mounted to said device. 
     
     
         12 . The system of  claim 11  further comprising camera position sensors comprising at least one from a group composed of a roll sensor, a pitch sensor, a yaw sensor, and a zoom sensor. 
     
     
         13 . A method comprising:
 generating a first video stream from a device;   determining the position of said device;   determining the optical axis of said first video stream and a first field of view;   determining a first calculated field of view from said position of said device and said first field of view;   calculating the position of an indicator using said first calculated field of view;   generating an image of said indicator;   displaying said image of said indicator with said first video stream;   determining that a first landmark is approximately located within the first field of view;   determining a calculated position of said first landmark within said first field of view;   finding the actual position of said landmark within said first video feed;   comparing said calculated position and said actual position of said landmark to determine a set of correction factors; and   using said correction factors to generate a corrected field of view.   
     
     
         14 . The method of  claim 13  said landmark comprises a stationary object. 
     
     
         15 . The method of  claim 13  said landmark comprises a movable object. 
     
     
         16 . The method of  claim 15  said landmark comprises a second device having a set of second device sensors in communication with said field of view calculator. 
     
     
         17 . The method of  claim 13  said device being portable by a pedestrian. 
     
     
         18 . The method of  claim 13  said determining the position of said vehicle comprises at least one output from a group comprising a global positioning system receiver, an altimeter, a compass, and a gyroscope. 
     
     
         19 . The method of  claim 13  said determining the optical axis of said first video stream and the first field of view comprises at least one output from a group comprising a roll sensor, a pitch sensor, a yaw sensor, and a zoom sensor. 
     
     
         20 . The method of  claim 13  said indicator comprises at least one from a group comprising latitude and longitude coordinates, a street name, a building address, a building name, and a vehicle.