Generating Trimap for Image Matting Using Color Co-Fusion

Abstract

In this paper, we propose a simple and efficient approach to generate a high-quality trimap from the input image. Most of the state-of-the-art matting algorithms require human intervention in the form of trimap or scribbles to generate the alpha matte from the input image. An attentively created trimap is required to acquire an accurate alpha matte. This is a very tedious task and may even become impractical for some applications. The accuracy of trimap-based approach reduces drastically as the trimap becomes thicker and coarser. We use the co-fusion-based method to generate a high-quality trimap in less time, which assists in obtaining accurate and fast results. The experimental results demonstrate that our method produces good quality trimap, which results in an accurate matte estimation. We validate our results by replacing our generated trimap by manually created trimap while using the same image matting algorithm.

Keywords

• Image matting
• co-fusion
• trimap
• alpha matte
• soft segmentation