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    • 2. 发明申请
    • METHOD AND SYSTEM THEREOF FOR DETECTING OBJECTS IN THE FIELD OF VIEW OF AN OPTICAL DETECTION DEVICE
    • WO2022224111A1
    • 2022-10-27
    • PCT/IB2022/053571
    • 2022-04-15
    • UNIVERSITA' DEGLI STUDI DI TORINORIKEN
    • MONTANARO, AntonioBERTAINA, Mario EdoardoEBISUZAKI, Toshikazu
    • G06V10/62G06V10/82
    • Computer-implemented method for detecting objects in the field of view of an optical detection device (2) comprising: - acquiring (10), through the optical detection device (2), a plurality of subsequent frames (F) of a portion of an observed space in a time interval (T), wherein each frame (F) is acquired in a corresponding time instant (Tk) of the time interval (T); - selecting (20) a subset of frames (Fsel) from the plurality of frames (F); - for each set of values of shifting parameters (Formula I, θN) of a plurality of sets of values of shifting parameters (Formula I), θN) that are indicative corresponding predetermined motions of an object with respect to the optical detection device (2), determining (30) a corresponding first stacked frame (Fs, Fs,g, Fs,b) on the basis of the subset of frames (Fsel) and as a function of the set of values of the shifting parameters (Formula I, θN); - for each first stacked frame (Fs, Fs,g, Fs,b), determining (40, 50, 60) whether the first stacked frame (Fs, Fs,g, Fs,b) belongs to a first or a second class (C1, C2), wherein the first and the second class are respectively indicative of the presence or absence of an image of an object in the first stacked frame (Fs, Fs,g, Fs,b); and - selecting, among said sets of values of shifting parameters (Formula II, θg), each set of values of shifting parameters that is associated to corresponding first stacked frame (Fs, Fs,g) classified as belonging to the first class (C1), the method further comprising, for each selected set of values of shifting parameters (Formula II, θg) : - determining (70) a corresponding second stacked frame (Fs,n, Fs,n,g, Fs,n,b) on the basis of the set of frames (F) and as a function of the selected set of values of shifting parameters (Formula II, θg); - for each second stacked frame (Fs,n, Fs,n,g, Fs,n,b), determining (80, 90, 100) whether the second stacked frame (Fs,n, Fs,n,g, Fs,n,b) belongs to a third or a fourth class (C1, C2) wherein the third and the fourth class are respectively indicative of the presence or absence of an image of an object in the second stacked frame (Fs,n, Fs,n,g, Fs,n,b); - determining (110) if the first stacked frame (Fs, Fs,g) classified as belonging to the first class (C1) and in the second stacked frame (Fs,n, Fs,n,g, Fs,n,b) classified as belonging to the third class (C1) meet a requirement; and - if said requirement is met, indicate (120) the presence of an object.