Image coordinate system transformation method and apparatus, device, and storage medium

An image coordinate system transformation apparatus, the apparatus comprising:

• a memory storing computer program instructions;
• and a processor coupled to the memory and configured to execute the computer program instructions and perform:
• obtaining video images acquired by adjacent cameras, the adjacent cameras including a first camera and a second camera that have an overlapping photography region on a ground plane;
• recognizing N groups of key points of a target object on the ground plane from the video images acquired by the adjacent cameras, each group of key points including a first key point extracted from a video image of the first camera and a second key point extracted from a video image of the second camera, the first key point and the second key point being the same feature point of the same target object appearing in the adjacent cameras at the same moment, and N being an integer greater than or equal to 3;
• and
• calculating a transformation relationship between image coordinate systems of the adjacent cameras according to the N groups of key points.

A non-transitory computer-readable storage medium storing computer program instructions executable by at least one processor to perform:

• obtaining video images acquired by adjacent cameras, the adjacent cameras including a first camera and a second camera that have an overlapping photography region on a ground plane;
• recognizing N groups of key points of a target object on the ground plane from the video images acquired by the adjacent cameras, each group of key points including first key point extracted from a video image of the first camera and a second key point extracted from a video image of the second camera, the first key point and the second key point being the same feature point of the same target object appearing in the adjacent cameras at the same moment, and N being an integer greater than or equal to 3;
• and
• calculating a transformation relationship between image coordinate systems of the adjacent cameras according to the N groups of key points.