Patent ID: 8013856

Claim:
An image processing method implemented by a processor for projecting a virtual ray onto volume data to create an image, said image processing method comprising: projecting a first virtual ray from a first eye with the processor; acquiring an attenuation position at which a remaining light amount of the first virtual ray attenuates by a predetermined amount; and acquiring a traveling distance of the first virtual ray from the first eye to the attenuation position, wherein to project a second virtual ray with the processor adjacent to the first virtual ray, a projection start position of the second virtual ray is a position offset by a predetermined value in a direction of travel towards a second eye from a traveling position, the traveling position being at the traveling distance from the second eye, wherein the projection start position of the second virtual ray and the second eye are at differing positions, and when a voxel is not transparent at the projection start position of the second virtual ray, the second virtual ray is projected from a position further offset by a predetermined value in the direction of travel towards the second eye.