Method, implemented by computer, for analysing the gait of an individual comprising at least the following steps of: a. acquiring, from an image capturing device, a stream of images of the individual in walking motion, the stream comprising at least one sequence of images and a corresponding sequence of depth maps making it possible to reconstruct three-dimensional images, each depth map characterising the distance of objects seen by the device, b. on the basis of each three-dimensional image, determining, in a Euclidean space, the position of the right foot and the position of the left foot of the individual, then c. performing spatio-temporal modelling of the gait of the individual, the spatio-temporal modelling step comprising the following steps of: i. for each foot, constructing, on the basis of the previously determined and time-ordered positions, a graphical representation (3, 4) of the path of the foot according to a model wherein each phase of placing weight on the foot is represented differently and separately from two other phases of which a preceding phase of deceleration of the foot and a subsequent phase of acceleration of the foot, ii. placing the representation constructed for the left foot and the representation constructed for the right foot in spatio-temporal alignment with one another, by projecting the representations (3 and 4) in said Euclidean space, then iii. computing at least one parameter of the gait of the individual on the basis of the two aligned representations (3 and 4), the method being characterised in that each weight placing phase is represented by a horizontal straight portion, the length of which corresponds to the duration of the placing of weight and wherein each pair of successive phases of acceleration and of deceleration with one another is represented by a Bezier curve, for example obtained on the basis of the positions of the foot during said acceleration and deceleration phases. a. acquiring, from an image capturing device, a stream of images of the individual in walking motion, the stream comprising at least one sequence of images and a corresponding sequence of depth maps making it possible to reconstruct three-dimensional images, each depth map characterising the distance of objects seen by the device, b. on the basis of each three-dimensional image, determining, in a Euclidean space, the position of the right foot and the position of the left foot of the individual, then c. performing spatio-temporal modelling of the gait of the individual, the spatio-temporal modelling step comprising the following steps of: i. for each foot, constructing, on the basis of the previously determined and time-ordered positions, a graphical representation (3, 4) of the path of the foot according to a model wherein each phase of placing weight on the foot is represented differently and separately from two other phases of which a preceding phase of deceleration of the foot and a subsequent phase of acceleration of the foot, ii. placing the representation constructed for the left foot and the representation constructed for the right foot in spatio-temporal alignment with one another, by projecting the representations (3 and 4) in said Euclidean space, then iii. computing at least one parameter of the gait of the individual on the basis of the two aligned representations (3 and 4), i. for each foot, constructing, on the basis of the previously determined and time-ordered positions, a graphical representation (3, 4) of the path of the foot according to a model wherein each phase of placing weight on the foot is represented differently and separately from two other phases of which a preceding phase of deceleration of the foot and a subsequent phase of acceleration of the foot, ii. placing the representation constructed for the left foot and the representation constructed for the right foot in spatio-temporal alignment with one another, by projecting the representations (3 and 4) in said Euclidean space, then iii. computing at least one parameter of the gait of the individual on the basis of the two aligned representations (3 and 4),