Object tracking method and apparatus based on image space positioning, and device

An object tracking apparatus based on image space positioning, comprising:

• an acquisition module, configured to acquire first position coordinates of a plurality of object detection boxes at a current moment, the first position coordinates comprising first pixel coordinates and first world coordinates;
• a prediction module, configured to predict second position coordinates of a candidate box of each object detection box at the next moment on the basis of the first position coordinates;
• a calculation module, configured to calculate multi-dimensional similarities between each object detection box and a plurality of candidate boxes on the basis of the second position coordinates and third position coordinates of each object detection box at the next moment, the multi-dimensional similarities comprising a multi-dimensional similarity determined on the basis of a dynamic threshold of a centroid distance, and the third position coordinates being actual measured position coordinates;
• and
• an outputting module, configured to output an object tracking result at the next moment by using a preset matching algorithm according to the multi-dimensional similarities.