Generation of Arbitrarily-Oriented Ripple Images using Circular-Sector-Type Smoothing Filter and Inverse Filter

• Main Author: Toru Hiraoka
• Format: Article
• Language: English
• Published: Atlantis Press 2020-02-01
• Series: Journal of Robotics, Networking and Artificial Life (JRNAL)
• Subjects: Non-photorealistic rendering; ripple pattern; arbitrarily orientation; circular-sector-type smoothing filter; inverse filter
• Online Access: https://www.atlantis-press.com/article/125935231/view

A Non-photorealistic rendering method for generating ripple images from photographic images has been proposed using intensity gradient. Ripple patterns imitate a wave on the water surface and are composed of continuous lines with fluctuations. Ripple images are expressed by superimposing ripple patterns on photographic images. However, the conventional method can only generate vertical and horizontal ripple patterns. Therefore, in this paper, we develop a method that can generate ripple patterns in any orientation. Ripple images generated by the proposed method are called Arbitrarily-Oriented Ripple (AOR) images. The proposed method is executed by an iterative process using circular-sector-type smoothing filter and inverse filter. To verify the effectiveness of our method, we investigate the changes in AOR images by changing the values of the parameters.