Rider assistance system and method

A riding assistance method for a motorcycle, the method comprising performing the following, in real-time:

• obtaining, by a processor, (a) a series of at least two images consecutively acquired by at least one backward-looking camera installed on the motorcycle in a manner enabling it to capture images of a scene at the back of the motorcycle, wherein a time passing between capturing of each consecutive image pair of the images is lower than a given threshold, (b) a sequence of self-measurements including at least a roll angle of the motorcycle, wherein the roll angle is determined by the processor;
• analyzing, by the processor, the images of the series to identify one or more objects in a scene at the back of the motorcycle and to determine at least object density in the scene;
• determine, in an image plane of the backward-looking camera and based on the determined object density and the sequence of self-measurements, a dynamic safety zone comprising a trapezoid constructed from a truncated triangle, wherein an orientation of the dynamic safety zone is determined based at least on the roll angle of the motorcycle, wherein a width of the dynamic safety zone is dynamically varied according to at least the object density, and wherein a depth of the dynamic safety zone is dynamically varied according to at least a predictive trajectory of the motorcycle based on the self-measurements;
• and
• generating, by the processor, a warning notification upon identifying presence of at least part of at least one of one or more respective objects at least partially visible on at least part of the images in the series in the dynamic safety zone, being indicative of a threat to the motorcycle.

A non-transitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code, executable by a processor of a computer to perform, in real-time, a method comprising:

• obtaining, by the processor, (a) a series of at least two images consecutively acquired by at least one backward-looking camera installed on the motorcycle in a manner enabling it to capture images of a scene at the back of the motorcycle, wherein a time passing between capturing of each consecutive image pair of the images is lower than a given threshold, (b) a sequence of self-measurements including at least a roll angle of the motorcycle, wherein the roll angle is determined by the processor;
• analyzing, by the processor, the images of the series to identify one or more objects in a scene at the back of the motorcycle and to determine at least object density in the scene;
• determine, in an image plane of the backward-looking camera and based on the determined object density and the sequence of self-measurements, a dynamic safety zone comprising a trapezoid constructed from a truncated triangle, wherein an orientation of the dynamic safety zone is determined based at least on the roll angle of the motorcycle, wherein a width of the dynamic safety zone is dynamically varied according to at least the object density, and wherein a depth of the dynamic safety zone is dynamically varied according to at least a predictive trajectory of the motorcycle based on the self-measurements;
• and
• generating, by the processor, a warning notification upon identifying presence of at least part of at least one of one or more respective objects at least partially visible on at least part of the images in the series in the dynamic safety zone, being indicative of a threat to the motorcycle.