Generating Bamboo Weave Images with Dither on Cartesian Lines

We propose a non-photorealistic rendering (NPR) technique for generating an image of weaving patterns with color bamboo tapes. We use bamboo tapes of 8 colors on the vertecies of the RGB color cube. The bamboo-weave dithering method is devised for determining the color of horizontal and vertical tapes avoiding artificial repetitive color patterns and an iterative solution method is shown to be effective for reducing color quantization errors. We present an algorithm using iterative filtering for determining the weaving pattern of tapes, that is, which of horizontal or vertical tape passes above at their crossing points and show the algorithm is efficient for reducing the run-length of tape weaves. The height-field texture of weaves is obtained from the weaving pattern and is multiplied to dithered images for generating bamboo weave images.