A Square Pointillism Image Generation, and Its GPU Acceleration

Non-photorealistic rendering is one of the digital art techniques. It generates digital images resembling artistic representation. The main contribution of this paper is to show a non-photorealistic rendering for high quality pointillism image generation with squares by pasting square patterns on canvas. Our technique is inspired by the characteristic of the human visual system to optimize generated images. Although it can generate high quality pointillistic images, a lot of time is necessary. Hence, we have implemented our technique in a graphics processing unit (GPU) to accelerate the computation. The experimental results show that the GPU implementation can achieve a speed-up factor of 160 over the sequential CPU implementation.