Image-based detection of offside in gameplay

An electronic device, comprising:

• a memory configured to store a sequence of image frames of a match field;
• and
• a circuitry configured to:
• estimate, from a current image frame of the sequence of image frames, a position of each player-object of a first plurality of player-objects of a first team and each player-object of a second plurality of player-objects of a second team, wherein the second team is in play with the first team;
• estimate a set of displacement values of a soccer-object and a set of velocity values of the soccer-object based on a position parameter of the soccer-object in each of a previous image frame, the current image frame, and a successive image frame of the sequence of image frames;
• determine each of a first direction value of the soccer-object in the previous image frame and a second direction value of the soccer-object in the current image frame based on a first displacement value and a second displacement value of the set of displacement values, wherein the first displacement value and the second displacement value correspond to the previous image frame and the current image frame;
• compare a ratio of the first direction value and the second direction value with a threshold direction value;
• detect a pass state of the soccer-object based on the set of velocity values of the soccer-object, and the comparison of the ratio with the threshold direction value, wherein the detected pass state corresponds to release of the soccer-object from a first player-object of the first plurality of player-objects towards at least one player-object of the first plurality of player-objects;
• determine, from the current image frame, a set of passive offside positions of a set of player-objects from the first plurality of player-objects, based on the estimated position of each player-object of the first plurality of player-objects and the detected pass state of the soccer-object;
• compute a first distance value between the soccer-object and a second player-object in the set of player-objects, for each of the current image frame and a set of successive image frames of the sequence of image frames;
• compare the computed first distance value for each of the current image frame and the set of successive image frames with a threshold distance value;
• and
• detect an active offside state of the second player-object, based on the comparison of the first distance value with the threshold distance value.