An electronic device is provided for image-based detection of offside in gameplay. The electronic device estimates positions of each player-object of a first team and a second team in a current image and further estimates displacement and velocity values of a soccer-object. The electronic device detects a pass state of the soccer-object based on the displacement and the velocity values. The electronic device determines a set of passive offside positions of a set of player-objects of the first team based on the estimated positions of the each player-object of the first team. The electronic device further detects an active offside state of at least one player-object in the set of player-objects, based on a first distance between the soccer-object and each of the set of player-objects, and transmits a notification to a referee of the gameplay, in real-time or near real time, based on the detected active offside state.