System and method for mapping object coordinates from a video to real world coordinates using perspective transformation

A video frame coordinate transformation system, comprising:

• one or more hardware processors;
• and
• one or more memory devices storing instructions executable by the one or more hardware processors for:
• obtaining an image from an image capture device;
• identifying an object depicted in the image;
• determining image-frame object coordinates for the object;
• selecting one of a plurality of coordinate transformation matrices associated with the image capture device, based on the image-frame object coordinates for the object;
• calculating real-world object coordinates for the object using the image-frame coordinates and the selected coordinate transformation matrix;
• determining a trajectory of the object using the calculated real-world object coordinates;
• determining that a position on a map of a site in which the image capture device is located is not included in any trajectory of any object for a predetermined period of time;
• and
• classifying the position on the map as a blind spot.

A non-transitory computer-readable medium storing computer-executable video frame coordinate transformation instructions for:

• obtaining an image from an image capture device;
• identifying an object depicted in the image;
• determining image-frame object coordinates for the object;
• selecting one of a plurality of coordinate transformation matrices associated with the image capture device, based on the image-frame object coordinates for the object;
• calculating real-world object coordinates for the object using the image-frame coordinates and the selected coordinate transformation matrix;
• determining a trajectory of the object using the calculated real-world object coordinates
• determining that a position on a map of a site in which the image capture device is located is not included in any trajectory of any object for a predetermined period of time;
• and
• classifying the position on the map as a blind spot.