Non-Photorealistic Image Rendering Using Cylindrical Projection
This paper presents the formulation and validation of a novel method for non-photorealistic image rendering (NPR). Realistic rendering using cylindrical projection requires computational methods to predict the radius of the imaginary cylinder which must be a constant. This constant is usually equal to the camera focal length with which the image is acquired. In this work, cylinder radius modulation is proposed. The radius of the imaginary cylinder is allowed to vary in value as the azimuthal length of the cylinder increases. This implies that the radius of the cylinder can be represented by a mathematical expressing which is dependent on the azimuthal length of the cylinder. This paper demonstrates that the use modulated cylindrical projection can effectively be used in the creation of non-photorealistic scenes and can find immense application in movie and gaming industry. Some shapes have been rendered to confirm the validity of the proposed method.