Light distribution control apparatus, control method of light distribution control apparatus, and light distribution control program

A control method of a light distribution control apparatus controlling light distribution of a headlight irradiating a region in front of a vehicle, the control method comprising:

• a region setting step of, by the light distribution control apparatus, setting an irradiation control region of the headlight including a first region including a front vehicle in a front direction of the vehicle and a second region not including the front vehicle in a periphery of the first region, based on a front captured image of an on-board camera of the vehicle;
• a light intensity setting step of, by the light distribution control apparatus, setting a set light intensity of the headlight based on the irradiation control region;
• and
• a lighting control step of, by the light distribution control apparatus, controlling the light distribution of the headlight based on the irradiation control region and the set light intensity,
• wherein, in the region setting step, a size of a blur region surrounding the first region on a first region side in the second region is set, based on a user setting parameter or a user operation of a user of the vehicle, and
• in the light intensity setting step, a first light intensity of the first region, a second light intensity of the second region that is higher than the first light intensity, and a third light intensity of the blur region that increases from the first light intensity to the second light intensity as a distance from the first region increases are set.

A non-transitory computer-readable storage media stored a light distribution control program that causes a computer to function as a light distribution control apparatus controlling light distribution of a headlight irradiating a region in front of a vehicle, the light distribution control program causing the computer to function as:

• a region setter configured to set an irradiation control region of the headlight including a first region including a front vehicle in a front direction of the vehicle and a second region not including the front vehicle in a periphery of the first region, based on a front captured image of an on-board camera of the vehicle;
• a light intensity setter configured to set a set light intensity of the headlight based on the irradiation control region;
• and
• a lighting controller configured to control the light distribution of the headlight based on the irradiation control region and the set light intensity,
• wherein the region setter is configured to set a size of a blur region surrounding the first region on a first region side in the second region, based on a user setting parameter or a user operation of a user of the vehicle, and
• the light intensity setter is configured to set a first light intensity of the first region, a second light intensity of the second region that is higher than the first light intensity, and a third light intensity of the blur region that increases from the first light intensity to the second light intensity as a distance from the first region increases.